Unifit Metalloys Inc.
Unifit Metalloys Inc.
Girgaon, Mumbai, Maharashtra
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ASTM Fasteners

Our range of products include astm a193 grade b7m hex head bolt, astm a193 grade b7 hex bolt, astm a193 grade b7 stud bolt, astm a193 grade b7m stud bolt, astm a320 grade l7/l7m hex bolt and astm a193 grade l7 stud bolt.

ASTM A193 Grade B7M Hex Head Bolt

ASTM A193 Grade B7M Hex Head Bolt
  • ASTM A193 Grade B7M Hex Head Bolt
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Approx. Price: Rs 30 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
Head TypeHex
Thread TypeFULL / HALF THREADED
GradeASTM A193 B7M
StandardASTM A193/ A193M
Material GradeASTM A193 B7M
Size3/8" TO 3" & M6 to M100
ColorSilver, Black
CoatingHot Dip Galvanizing , Epoxy Coating, Electro Polished, Passivation, Zinc Plating, Chrome Plating, Mirror Buffed, Teflon Coating, Oxidized, PTFE Coated
Packaging TypeCardboard Box / Gunny Bags
TechniqueHot Rolled / Cold Rolled

ASTM A193 specification covers alloy and stainless steel bolting for pressure vessels, valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications. Several grades are covered, including ferritic steels and austenitic stainless steels designated B5, B6, B7, B8, B8M, etc. Selection will depend upon design, service conditions, mechanical properties, and high temperature characteristics. This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract specifies the applicable A193M specification designation (SI units), the inch-pound units shall apply

 

ASTM A193 Grade B7M Raw Material
Grade Raw Material Description
B7M Chromium Molybdenum Alloy Steel, Quenched & Tempered

ASTM A193 Grade B7M Properties

ASTM A193 Grade B7M Chemical Composition
Carbon Manganese, max Phosphorus, max Sulfur, max Silicon Chromium Molybdenum
0.37 - 0.49 0.65 - 1.10 0.035 0.040 0.15-0.35 0.75-1.20 0.15-0.25
ASTM A193 Grade B7M Mechanical Properties
Grade Diameter Tensile Strength Yield Strength Elongation Reduction Hardness
Grade B7M M100 and under 690 550 18 50 235 HBW or 99 HRB
Grade B7M M100 and over 690 515 18 50 235 HBW or 99 HRB

Heat Treatment

Quenched & Tempered at 620º C minimum.


ASTM A193 Grade B7M Bolt Marking
Manufacturer's Mark Grade Marking
UMI B7M

Recommended Nuts & Washers
Bolting Grade Nut Grade Washer Grade
ASTM A193 Grade 7M ASTM A194 Grade 2H, 2HM ASTM F436
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  • Item Code: UNIFIT105
  • Production Capacity: 100000 PCS
  • Delivery Time: READY STOCK
  • Packaging Details: WOODEN BOX PACKING
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ASTM A193 Grade B7 Hex Bolt

ASTM A193 Grade B7 Hex Bolt
  • ASTM A193 Grade B7 Hex Bolt
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Approx. Price: Rs 30 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
Head TypeHex
Thread TypeFull / Head Threaded
MaterialHigh Tensile Steel
GradeA193 B7
StandardASTM A193
BrandUnifit Metalloys Inc
Size3/8" TO 3" & M6 TO M100
CoatingHot Dip Galvanizing , Epoxy Coating, Electro Polished, Passivation, Zinc Plating, Chrome Plating, Mirror Buffed, Teflon Coating, Oxidized, PTFE Coated
ColorSilver, Black
Packaging TypeCardboard Boxes / Gunny Bags
TechniqueHot Forged / Cold Forged
Head ShapeHex

ASTM A193 Grade B7 Hex Bolt are precisely manufactured at Unifit Metalloys Inc to meet the customer requirements, this ASTM A193 Grade B7 Hex Bolt are Manufactured using Best quality raw material from reputed Indian and Overseas Mills.
ASTM A193 Grade B7 Fasteners Specification: Hex Bolt
Material Specification Standards Length Size

ASTM A193 B7 Fasteners

 

IS

BS

ASTM

DIN, ISO, JIS, GB, IS, BS, ASTM

3 mm to 200 mm

M 02 to M 160


Mechanical Properties of ASTM A193 Grade B7 Hex Bolt
Grade Size Tensile ksi, min Yield, ksi, min Elong, %, min RA % min HBW HRC
B7 Up to 2-1/2 125 105 16 50 321 max 35 max
2-5/8 - 4 115 95 16 50
4-1/8 - 7 100 75 18 50

ASTM A193 GRADE B7 Hex Bolt Chemical Composition
Element B7 (AISI 4140)
Carbon 0.38 - 0.48%
Manganese 0.75 - 1.00%
Phosphorus, max 0.035%
Sulfur, max 0.040%
Silicon 0.15 - 0.35%
Chromium 0.80 - 1.10%
Nickel -
Molybdenum 0.15 - 0.25%



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  • Item Code: UNIFIT103
  • Production Capacity: 100000 PCS
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ASTM A193 Grade B7 Stud Bolt

ASTM A193 Grade B7 Stud Bolt
  • ASTM A193 Grade B7 Stud Bolt
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Approx. Price: Rs 20 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
StandardASTM A193
GradeASTM A193 B7
FinishPolished
Size3/8" to 3" and M6 to M100
Surface TreatmentBlack,Black Oxide,Plain
TechniqueHot Rolled
ColorBlack

ASTM A193 Grade B7 Stud Bolt are precisely manufactured at Unifit Metalloys Inc to meet the customer requirements, this Astm A193 Grade B7 Stud Bolt are Manufactured using Best quality raw material from reputed Indian and Overseas Mills.
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  • Item Code: UNIFIT104
  • Production Capacity: 100000 PCS
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ASTM A193 Grade B7M Stud Bolt

ASTM A193 Grade B7M Stud Bolt
  • ASTM A193 Grade B7M Stud Bolt
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Approx. Price: Rs 20 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
GradeASTM A193 B7
FinishPolished
Size3/8" to 3" and M6 to M100
Packaging TypeBox
Surface TreatmentBlack,Black Oxide,Plain
TechniqueHot Rolled

ASTM A193 Grade B7M Stud Bolt are precisely manufactured at Unifit Metalloys Inc to meet the customer requirements, this Astm A193 Grade B7M Stud Bolt are Manufactured using Best quality raw material from reputed Indian and Overseas Mills.
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  • Item Code: UNIFIT106
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ASTM A320 Grade L7/L7M Hex Bolt

ASTM A320 Grade L7/L7M Hex Bolt
  • ASTM A320 Grade L7/L7M Hex Bolt
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Approx. Price: Rs 50 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
Head TypeHex
Thread TypeFull/ Half Threaded
MaterialHigh Tensile Steel
GradeASTM A320
Size3/8" to 3" & M6 to M100
Surface TreatmentChrome Plated
TechniqueHot Rolled

ASTM A320 Grade L7/L7M Hex Bolt are precisely manufactured at Unifit Metalloys Inc to meet the customer requirements, this Astm A320 Grade L7/L7M Hex Bolt are Manufactured using Best quality raw material from reputed Indian and Overseas Mills.
a
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  • Item Code: UNIFIT111
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ASTM A193 Grade L7 Stud Bolt

ASTM A193 Grade L7 Stud Bolt
  • ASTM A193 Grade L7 Stud Bolt
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Approx. Price: Rs 20 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
StandardASTM A193
Size3/8" To 3" and M6 to M100
MaterialCarbon Steel
FinishPolished
Surface TreatmentBlack, Plain, Black Oxide
Packaging TypeBox
I deal inNew Only

ASTM A193 Grade L7 Stud Bolt are precisely manufactured at Unifit Metalloys Inc to meet the customer requirements, this Astm A193 Grade L7 Stud Bolt are Manufactured using Best quality raw material from reputed Indian and Overseas Mills.
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  • Item Code: UNIFIT108
  • Production Capacity: 100000 PCS
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ASTM A194 Grade 7/7M Hex Nut

ASTM A194 Grade 7/7M Hex Nut
  • ASTM A194 Grade 7/7M Hex Nut
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Approx. Price: Rs 10 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
MaterialHigh Tensile Steel
Size3/8" to 3" & M6 to M100
StandardASTM A194
Material GradeASTM A194 Grade 7/7M
Head ShapeHex
TechniqueHot Rolled
Surface FinishPolished

By keeping our track with the advancements taking place in the industry arena, we have come up with a wide consignment of ASTM A194 Grade 7/7M Hex Nut.
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  • Item Code: UNIFIT114
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ASTM A193 Grade L7M Hex Head Bolt

ASTM A193 Grade L7M Hex Head Bolt
  • ASTM A193 Grade L7M Hex Head Bolt
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Approx. Price: Rs 20 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
Head TypeHex
Thread TypeFull/Half Threaded
MaterialHigh Tensile Steel
StandardASTM A193
Size3/8" TO 3" & M6 TO M100
CoatingZinc Electroplating
Surface TreatmentChrome Plated
Packaging TypeBox

ASTM A193 Grade L7M Hex Head Bolt are precisely manufactured at Unifit Metalloys Inc to meet the customer requirements, this Astm A193 Grade L7M Hex Head Bolt are Manufactured using Best quality raw material from reputed Indian and Overseas Mills.
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  • Item Code: UNIFIT109
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ASTM A194 Grade 2H/2HM Hex Nut

ASTM A194 Grade 2H/2HM Hex Nut
  • ASTM A194 Grade 2H/2HM Hex Nut
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Approx. Price: Rs 10 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
MaterialStainless Steel
ShapeHex Nut
Size3/8" to 3" & M6 to M100
StandardASTM A194
Material GradeASTM A194 Grade 2H/2HM
TechniqueHot Rolled
Surface FinishPolished

By keeping our track with the advancements taking place in the industry arena, we have come up with a wide consignment of ASTM A194 Grade 2H/2HM Hex Nut.
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  • Item Code: UNIFIT113
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ASTM A320 Grade L7/L7M Stud Bolt

ASTM A320 Grade L7/L7M Stud Bolt
  • ASTM A320 Grade L7/L7M Stud Bolt
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Approx. Price: Rs 30 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
StandardASTM A193,ASTM A320
Size3/8" TO 3" AND M6 TO M100
MaterialCarbon Steel
FinishPolished
Head ShapeHex
Surface TreatmentBlack, Black Oxide, Plain

By keeping our track with the advancements taking place in the industry arena, we have come up with a wide consignment of ASTM A320 Grade L7/L7M Stud Bolt.
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  • Item Code: UNIFIT112
  • Production Capacity: 100000 PCS
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ASTM A193 Grade L7M Stud Bolt

ASTM A193 Grade L7M Stud Bolt
  • ASTM A193 Grade L7M Stud Bolt
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Approx. Price: Rs 50 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
Usage/ApplicationIndustrial
StandardASTM A193
Size3/8" TO 3" AND M6 TO M100
MaterialCarbon Steel
FinishPolished
Surface TreatmentBlack, Black Oxide, Plain
I deal inNew Only

By keeping our track with the advancements taking place in the industry arena, we have come up with a wide consignment of ASTM A193 Grade L7M Stud Bolt.
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  • Item Code: UNIFIT110
  • Production Capacity: 100000 PCS
  • Delivery Time: READY STOCK
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ASTM A193 Grade L7 Hex Head Bolt

ASTM A193 Grade L7 Hex Head Bolt
  • ASTM A193 Grade L7 Hex Head Bolt
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Approx. Price: Rs 50 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
Head TypeHex
Thread TypeFull/ Half Threaded
StandardASTM A193
Size3/8" TO 3" & M6 TO M100
CoatingPlain, Zinc Plated, Chrome Plated
Surface TreatmentGalvanized
FinishPolished
MaterialMild Steel

By keeping our track with the advancements taking place in the industry arena, we have come up with a wide consignment of ASTM A193 Grade L7 Hex Head Bolt.
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  • Item Code: unifit107
  • Production Capacity: 100000 PCS
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  • Packaging Details: Wooden Box Packing
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ASTM A453 Grade 660 Hex Head Bolt

ASTM A453 Grade 660 Hex Head Bolt
  • ASTM A453 Grade 660 Hex Head Bolt
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Approx. Price: Rs 50 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
Head TypeHex
Thread TypeFull Thread
MaterialHigh Tensile Steel
GradeASTM A453 Grade 660 Hex Head Bolt
SizeM8-M72 & 3/8" to 3"
Surface TreatmentChrome Plated
CoatingZinc Electroplating
I deal inNew Only

By keeping our track with the advancements taking place in the industry arena, we have come up with a wide consignment of ASTM A453 Grade 660 Hex Head Bolt.
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  • Item Code: UNIFIT202
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ASTM A453 Grade 660 Hex Nut

ASTM A453 Grade 660 Hex Nut
  • ASTM A453 Grade 660 Hex Nut
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Approx. Price: Rs 50 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
MaterialHigh Tensile Steel
ShapeHex
SizeM6 to M72 & 3/8" to 3"
Material GradeASTM A453 Grade 660 Hex Nut
Head ShapeHex
TechniqueHot Rolled
I deal inNew Only

By keeping our track with the advancements taking place in the industry arena, we have come up with a wide consignment of ASTM A453 Grade 660 Hex Nut.
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  • Item Code: UNIFIT203
  • Production Capacity: 100000 PCS
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ASTM A193 Grade B8 Hex Bolt

ASTM A193 Grade B8 Hex Bolt
  • ASTM A193 Grade B8 Hex Bolt
  • ASTM A193 Grade B8 Hex Bolt
  • ASTM A193 Grade B8 Hex Bolt
  • ASTM A193 Grade B8 Hex Bolt
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Approx. Price: Rs 15 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
Metric SizeM3 to M180
Inch Size3/8" to 5"
Length.5MM to 3000MM,0.05 MTR to 3 MTR
Surface FinishCadmium Plated,Chrome Plated,Copper Plated,Silver Plated,Tin Plated
Thread LengthHalf Thread,Full Thread,Double End Threaded,One End Threaded,Customized Thread Length
Thread SeriesUNC / UNF / 8UN,BSW
Head TypesHex Head,Roun Head,Square Head,Socket Head,Allen Head,Countersunk
Bolt TypeFull Threaded Stud,Double End Threaded Stud
Nut TypeNylon Nut,Nylock Jam Nut,K Lock Nut,2 Way Lock Nut,Slotted Castle Nut
Washer TypeInternal Tooth Lock Washer,Curved Wave Washer,Conical Spring Washer,Self Locking Washer
PackingPlastic Sleeve on Threads + Thermacol Roll + Plastic Roll
MakeUnifit Metalloys Inc,India
ASTM GradesASTM F467 UNS R55111 Nuts
Stainless Steel GradesStainless Steel 410 (UNS S41000 / W.Nr 1.4006),Stainless Steel 420 (UNS S42000 / W.Nr 1.4021)
Duplex Steel GradeDuplex 31803 (UNS S31803 / W.Nr 1.4462 / F51),Duplex 32205 (UNS S32205 / W.Nr 1.4462 / F51)
Super Duplex Steel GradeSuper Duplex 32760 (UNS S32760 / W.Nr 1.4501/ F53),Super Duplex 2507 (UNS S32750 / W.Nr 1.4410/ F53
Nickel GradeNickel 200 (UNS N02200 / W.Nr 2.4066),Nickel 201 (UNS N02201 / W.Nr 2.4068)
Hastelloy GradesHastelloy C276 (UNS N10276 / W.Nr 2.4819),Hastelloy C22 (UNS N06022 / W.Nr 2.4602)
Monel GradesMonel 400 (UNS N04400 / W.Nr 2.4360),Monel K500 (UNS N05500 / W.Nr 2.4375)
Inconel GradesInconel 800HT (UNS N08811 / W.Nr 1.4959)
Incoloy GradeIncoloy 800HT (UNS N08811 / W.Nr 1.4959)
Titanium GradesTitanium Grade 7 (UNS R52400 / W.Nr 3.7235)
Cupro-Nickel GradesCupro-Nickel 90/10 (UNS C70600 / W.Nr 2.0872),Cupro-Nickel 70/30 (UNS S71500 / NES780)
Special GradesAlloy 20 (UNS N08020 / W.Nr 2.4660),SMO 254 (UNS S31254 / W.Nr 1.4547)
Alloy Steel GradesAlloy Steel F22 (UNS K21590 / W.Nr 1.7380)

UNIFIT METALLOYS INC is one of the known manufacturers and distributors of ASTM A193 B8 Stainless Steel Hex Bolts, which are available in different sizes and dimensions. We manufacture these ASTM A193 B8 Stainless Steel Bolts for usage and application in different industries. We are also a prominent name in manufacturing these ASME SA 193 B8 SS Heavy Hex Bolts which are the precision components. Since commencement, our company has set a benchmark in the offering of these ASTM A193 B8 Stainless Steel Hex Screws. 

MATERIAL SPECIFICATION:
MaterialSpecificationStandardsSize
Length

ASTM A193 B8 Hex Bolt

 

IS

BS

ASTM

DIN, ISO, JIS, GB, IS, BS, ASTM

M 02 to M 160

3 mm to 200 mm

CHEMICAL COMPOSTIONS:
ElementB7B8B8M
Carbon0.37 - 0.49%0.08% max0.08% max
Manganese0.65 - 1.10%2.00% max2.00% max
Phosphorus, max0.035%0.045%0.045%
Sulfur, max0.040%0.030%0.030%
Silicon0.15 - 0.35%1.00% max1.00% max
Chromium0.75 - 1.20%18.0 - 20.0%16.0 - 18.0%
Nickel8.0 - 11.0%10.0 - 14.0%
Molybdenum0.15 - 0.25%2.00 - 3.00%
MECHIANICAL PROPERTIES:
GradeSizeTensile ksi, minYield, ksi, minElong, %, minRA % min
B7Up to 2-1/21251051650
2-5/8 - 4115951650
4-1/8 - 7100751850
B8 Class 1All75303050
B8M Class 1All75303050
B8 Class 2Up to 3/41251001235
7/8 - 1115801535
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ASTM A320 GRADE L7 Hex Bolts

ASTM A320 GRADE L7 Hex Bolts
  • ASTM A320 GRADE L7 Hex Bolts
  • ASTM A320 GRADE L7 Hex Bolts
  • ASTM A320 GRADE L7 Hex Bolts
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Approx. Price: Rs 20 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
Metric SizeM3 to M180
Inch Size3/8" to 5"
Length.5MM to 3000MM,0.05 MTR to 3 MTR
Surface FinishCadmium Plated,Chrome Plated,Copper Plated,Silver Plated,Tin Plated
Thread LengthHalf Thread,Full Thread,Double End Threaded,One End Threaded,Customized Thread Length
Thread SeriesUNC / UNF / 8UN,BSW
Head TypesHex Head,Roun Head,Square Head,Socket Head,Allen Head,Countersunk
Bolt TypeFull Threaded Stud,Double End Threaded Stud
Nut TypeNylon Nut,Nylock Jam Nut,K Lock Nut,2 Way Lock Nut,Slotted Castle Nut
Washer TypeInternal Tooth Lock Washer,Curved Wave Washer,Conical Spring Washer,Self Locking Washer
PackingPlastic Sleeve on Threads + Thermacol Roll + Plastic Roll
MakeUnifit Metalloys Inc,India
ASTM GradesASTM A193 B8C class 1 Bolts,ASTM A193 B8C class 2 Bolts,ASTM A193 B8CA Bolts
Stainless Steel GradesStainless Steel 410 (UNS S41000 / W.Nr 1.4006),Stainless Steel 420 (UNS S42000 / W.Nr 1.4021)
Duplex Steel GradeDuplex 31803 (UNS S31803 / W.Nr 1.4462 / F51),Duplex 32205 (UNS S32205 / W.Nr 1.4462 / F51)
Super Duplex Steel GradeSuper Duplex 32760 (UNS S32760 / W.Nr 1.4501/ F53),Super Duplex 2507 (UNS S32750 / W.Nr 1.4410/ F53
Nickel GradeNickel 200 (UNS N02200 / W.Nr 2.4066),Nickel 201 (UNS N02201 / W.Nr 2.4068)
Hastelloy GradesHastelloy C276 (UNS N10276 / W.Nr 2.4819),Hastelloy C22 (UNS N06022 / W.Nr 2.4602)
Monel GradesMonel 400 (UNS N04400 / W.Nr 2.4360),Monel K500 (UNS N05500 / W.Nr 2.4375)
Inconel GradesInconel 800HT (UNS N08811 / W.Nr 1.4959)
Incoloy GradeIncoloy 800HT (UNS N08811 / W.Nr 1.4959)
Titanium GradesTitanium Grade 7 (UNS R52400 / W.Nr 3.7235)
Cupro-Nickel GradesCupro-Nickel 90/10 (UNS C70600 / W.Nr 2.0872),Cupro-Nickel 70/30 (UNS S71500 / NES780)
Special GradesAlloy 20 (UNS N08020 / W.Nr 2.4660),SMO 254 (UNS S31254 / W.Nr 1.4547)
Alloy Steel GradesAlloy Steel F22 (UNS K21590 / W.Nr 1.7380)

UniFit Metalloys is a producer and dealer of ASTM A320 GR.L7 Fasteners. We maintain production standards of international levels while developing our products.
Our ASTM A320 GR.L7 Fasteners are produced specifically for raised temperature utilization. GR.L7 Fasteners are high tensile and yield strength bearing austenitic steel types. These A320 Gr.L7 Fasteners are durable even at cryogenic temperatures. These Fasteners that we produce are highly demanded for their ease of use and reliability even under harsh environments use. These Fasteners are produced using Grade L7 Fasteners are known to resist corrosion, and moderately oxidizing and diminishing conditions. Hex Nuts are utilized as a part of numerous applications, for example, fluid transportation, material, and pharmaceutical businesses. We offer our GR.L7 items at competent costs in adjustable sizes and thicknesses to meet client requests. Our ASTM A320 GR.L7 Fasteners are accessible in various types like GR.L7 Bolts, GR.L7 Hex Nuts, GR.L7 Nuts, 

ASTM A320 Gr. L7 AISI 4142 Screws, AISI 4140 High Tensile Bolts, Alloy Steel ASTM A320 L7 T-Head Bolts, ASTM A320 Gr. L7 Studs, A320 Grade L7 AISI 4142 Threaded Rod Exporter in Mumbai, India.STM A320 AISI 4140 Washers, Alloy Steel ASTM A320 Gr.L7 J Bolts, Alloy Steel ASTM A320 L7 Mushroom Head Square Neck Bolts, ASTM A320 Grade L7 AISI 4142 Screws, ASTM A320 L7 Hexagon Head Cap Bolts Supplier in India.AISI 4142 Gr. L7 ASTM A320 Stud Bolts, ASTM A320 Grade L7 AISI 4142 Square Bolts, ASTM A320 AISI 4140 Bolts, ASTM SA320 4140 Hex Bolts, ASTM A320 L7 Alloy Steel Machine Bolts in MumbaiAlloy Steel Bolts Fasteners, ASTM A320 L7 AISI 4142 Bolts Manufacturer, A320 L7 AISI 4140 DIN 934 Bolts Exporter, SA320 L7 ASME B18.2.2 Nuts Distributor, Alloy Steel ASTM A320 L7 Eye Bolt, Alloy Steel ASTM A320 Grade L7 Foundation Bolts, Alloy Steel ASTM A320 Gr.L7 Structural Bolts Traders in India.Specifications

Specifications : ASTM A320 & ASME SA320

Standard : DIN, ASTM, BS and all International Standards

Thread Diameters : Up to 2-1/2

Threads Configuration : ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads

Certification : Dual Certified As per ASTM & ASME Codes.

Application Industries

In bridges and other structural steel works

Automobile industry

Agriculture equipment

Pylons and other architectural structures

Offshore industries

Transportation equipment

Spiral Cases and penstocks in power plants.

Alloy Steel A320 L7 Fasteners Chemical Composition :
Grade C Mn P S Si Cr Ni Mo
L7 0.37 - 0.49% 0.65 - 1.10% 0.04% 0.04% 0.15 - 0.35% 0.75 - 1.20% - 0.15 - 0.25%
ASTM A320 L7 Fasteners Mechanical properties :

 

Grade

 

Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min
L7 125 105 16
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ASTM A193 Grade B8m Hex Bolt

ASTM A193 Grade B8m Hex Bolt
  • ASTM A193 Grade B8m Hex Bolt
  • ASTM A193 Grade B8m Hex Bolt
  • ASTM A193 Grade B8m Hex Bolt
  • ASTM A193 Grade B8m Hex Bolt
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Approx. Price: Rs 40 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
Metric SizeM3 to M180
Inch Size3/8" to 5"
Length.5MM to 3000MM,0.05 MTR to 3 MTR
Surface FinishCadmium Plated,Chrome Plated,Copper Plated,Silver Plated,Tin Plated
Thread LengthHalf Thread,Full Thread,Double End Threaded,One End Threaded,Customized Thread Length
Thread SeriesUNC / UNF / 8UN,BSW
Head TypesHex Head,Roun Head,Square Head,Socket Head,Allen Head,Countersunk
Bolt TypeAllen Head Cap Screw,Hex Flange Bolt,Eye Bolt,Lag Bolt,J Bolt,U Bolt,Shoulder Bolt,Elevator B
Nut TypeNylon Nut,Nylock Jam Nut,K Lock Nut,2 Way Lock Nut,Slotted Castle Nut
Washer TypeInternal Tooth Lock Washer,Curved Wave Washer,Conical Spring Washer,Self Locking Washer
PackingPlastic Sleeve on Threads + Thermacol Roll + Plastic Roll
MakeUnifit Metalloys Inc,India
ASTM GradesASTM F467 UNS R55111 Nuts
Stainless Steel GradesStainless Steel 410 (UNS S41000 / W.Nr 1.4006),Stainless Steel 420 (UNS S42000 / W.Nr 1.4021)
Duplex Steel GradeDuplex 31803 (UNS S31803 / W.Nr 1.4462 / F51),Duplex 32205 (UNS S32205 / W.Nr 1.4462 / F51)
Super Duplex Steel GradeSuper Duplex 32760 (UNS S32760 / W.Nr 1.4501/ F53),Super Duplex 2507 (UNS S32750 / W.Nr 1.4410/ F53
Nickel GradeNickel 200 (UNS N02200 / W.Nr 2.4066),Nickel 201 (UNS N02201 / W.Nr 2.4068)
Hastelloy GradesHastelloy C276 (UNS N10276 / W.Nr 2.4819),Hastelloy C22 (UNS N06022 / W.Nr 2.4602)
Monel GradesMonel 400 (UNS N04400 / W.Nr 2.4360),Monel K500 (UNS N05500 / W.Nr 2.4375)
Inconel GradesInconel 800HT (UNS N08811 / W.Nr 1.4959)
Incoloy GradeIncoloy 800HT (UNS N08811 / W.Nr 1.4959)
Titanium GradesTitanium Grade 7 (UNS R52400 / W.Nr 3.7235)
Cupro-Nickel GradesCupro-Nickel 90/10 (UNS C70600 / W.Nr 2.0872),Cupro-Nickel 70/30 (UNS S71500 / NES780)
Special GradesAlloy 20 (UNS N08020 / W.Nr 2.4660),SMO 254 (UNS S31254 / W.Nr 1.4547)
Alloy Steel GradesAlloy Steel F22 (UNS K21590 / W.Nr 1.7380)

UNIFIT METALLOYS INC is one of the well-known manufacturers of ASTM A193 B8 CL 2 Fasteners,which has a number of outstanding attributes to provide like Sturdy body, Easy to fit, Quality tested and more. Our fasteners are offered by means of customization as per the client’s design requirements and specifications. This array of ASTM A193 Grade b8 Class 2 Bolts can be retrieved in many designs, diameters, finishes and lengths. This high quality of ASTM A193 SS Fasteners B8 CL2 is being engineered and designed by making use of finest grade of basic materials which is coupled by means of cutting edge technology.

ASTM A193 Grade B8 CLASS 2 Fasteners Specification: Bolts, Nuts, Washers, Stud Bolts
MaterialSpecificationStandardsLengthSize

ASTM A193 B8 CL2 Fasteners

 

IS

BS

ASTM

DIN, ISO, JIS, GB, IS, BS, ASTM

3 mm to 200 mm

M 02 to M 160

Mechanical Properties of ASTM A193 GR B8 CL 2: Bolts, Nuts, Washers,Stud Bolts
GradeSizeTensile ksi, minYield, ksi, minElong, %, minRA % min
B7Up to 2-1/21251051650
2-5/8 - 4115951650
4-1/8 - 7100751850
B8 CL2 Class 1All75303050
B8 CL2M Class 1All75303050
B8 CL2 Class 2Up to 3/41251001235
7/8 - 1115801535
1-1/8 - 1-1/4105652035
1-3/8 - 1-1/2100502845
B8 CL2M Class 2Up to 3/4110951545
7/8 - 1100802045
1-1/8 - 1-1/495652545
1-3/8 - 1-1/290503045
SS ASTM A193 GR B8 CL 2 Fasteners Chemical Composition: Bolts, Nuts, Washers, Stud Bolts
ElementB7B8 CL2B8 CL2M
Carbon0.37 - 0.49%0.08% max0.08% max
Manganese0.65 - 1.10%2.00% max2.00% max
Phosphorus, max0.035%0.045%0.045%
Sulfur, max0.040%0.030%0.030%
Silicon0.15 - 0.35%1.00% max1.00% max
Chromium0.75 - 1.20%18.0 - 20.0%16.0 - 18.0%
Nickel8.0 - 11.0%10.0 - 14.0%
Molybdenum0.15 - 0.25%2.00 - 3.00%

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ASTM A193 GRADE B16 Hex Bolts

ASTM A193 GRADE B16 Hex Bolts
  • ASTM A193 GRADE B16 Hex Bolts
  • ASTM A193 GRADE B16 Hex Bolts
  • ASTM A193 GRADE B16 Hex Bolts
  • ASTM A193 GRADE B16 Hex Bolts
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Approx. Price: Rs 25 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
Metric SizeM3 to M180
Inch Size3/8" to 5"
Length.5MM to 3000MM,0.05 MTR to 3 MTR
Surface FinishCadmium Plated,Chrome Plated,Copper Plated,Silver Plated,Tin Plated
Thread LengthHalf Thread,Full Thread,Double End Threaded,One End Threaded,Customized Thread Length
Thread SeriesUNC / UNF / 8UN,BSW
Head TypesHex Head,Roun Head,Square Head,Socket Head,Allen Head,Countersunk
Bolt TypeFull Threaded Stud,Double End Threaded Stud
Nut TypeNylon Nut,Nylock Jam Nut,K Lock Nut,2 Way Lock Nut,Slotted Castle Nut
Washer TypeSquare Washer,Square Beveled Washer,Hex Washer,External Tooth Lock Washer,Fender Washer
PackingPlastic Sleeve on Threads + Thermacol Roll + Plastic Roll
MakeUnifit Metalloys Inc,India
ASTM GradesASTM F468 UNS N10001 Bolts,ASTM F468 UNS N10276 Bolts
Stainless Steel GradesStainless Steel 410 (UNS S41000 / W.Nr 1.4006),Stainless Steel 420 (UNS S42000 / W.Nr 1.4021)
Duplex Steel GradeDuplex 31803 (UNS S31803 / W.Nr 1.4462 / F51),Duplex 32205 (UNS S32205 / W.Nr 1.4462 / F51)
Super Duplex Steel GradeSuper Duplex 32760 (UNS S32760 / W.Nr 1.4501/ F53),Super Duplex 2507 (UNS S32750 / W.Nr 1.4410/ F53
Nickel GradeNickel 200 (UNS N02200 / W.Nr 2.4066),Nickel 201 (UNS N02201 / W.Nr 2.4068)
Hastelloy GradesHastelloy C276 (UNS N10276 / W.Nr 2.4819),Hastelloy C22 (UNS N06022 / W.Nr 2.4602)
Monel GradesMonel 400 (UNS N04400 / W.Nr 2.4360),Monel K500 (UNS N05500 / W.Nr 2.4375)
Inconel GradesInconel 800HT (UNS N08811 / W.Nr 1.4959)
Incoloy GradeIncoloy 800HT (UNS N08811 / W.Nr 1.4959)
Titanium GradesTitanium Grade 7 (UNS R52400 / W.Nr 3.7235)
Cupro-Nickel GradesCupro-Nickel 90/10 (UNS C70600 / W.Nr 2.0872),Cupro-Nickel 70/30 (UNS S71500 / NES780)
Special GradesAlloy 20 (UNS N08020 / W.Nr 2.4660),SMO 254 (UNS S31254 / W.Nr 1.4547)
Alloy Steel GradesAlloy Steel F1 (UNS K11522 / W.Nr 1.5415),Alloy Steel F5 (UNS K41545 / W.Nr 1.7362)

Unifit Metalloys Inc are a leading manufacturer and trader of ASTM A193 Grade B16 Bolts. Our offered products are manufactured in adherence to the preset industry standards & norms, to ensure the quality and flawlessness. Owing to the good financial position & TQM and large production capacity, we have earned a vast number of customers in the market.

The Unifit Metalloys Inc has drawn together under the one roof of the total spectrum of trading, stock holding and processing activities.

 

Specificaitons:

B7Alloy steel, AISI 4140/4142 quenched and tempered
B8Class 1 Stainless steel, AISI 304, carbide solution treated.
B8MClass 1 Stainless steel, AISI 316, carbide solution treated.
B8Class 2 Stainless steel, AISI 304, carbide solution treated, strain hardened
B8MClass 2 Stainless steel, AISI 316, carbide solution treated, strain hardened
B16A heat-treated chromium-molybdenum-vanadium steel for high-pressure, high-temperature service.

Mechanical Properties Bolt -Grade Identification Markings

GradeSizeTensile ksi, minYield, ksi, minElong, %, minRA % min
B7Up to 2-1/21251051650
2-5/8 – 4115951650
4-1/8 – 7100751850
B8 Class 1All75303050
B8M Class 1All75303050
B8 Class 2Up to 3/41251001235
7/8 – 1115801535
1-1/8 – 1-1/4105652035
1-3/8 – 1-1/2100502845
B8M Class 2Up to 3/4110951545
7/8 – 1100802045
1-1/8 – 1-1/495652545
1-3/8 – 1-1/290503045
B16Up to 2-1/21251051850
2-5/8 – 4110951745
4-1/8 – 7100851645

Material Chemical Composition

ElementB7 (AISI 4140)B8 (AISI 304)B8M (AISI 316)B16 (AISI 4140)
Carbon0.37 – 0.49%0.08% max0.08% max0.37 – 0.49%
Manganese0.65 – 1.10%2.00% max2.00% max0.65 – 1.10%
Phosphorus, max0.035%0.045%0.045%0.035%
Sulfur, max0.040%0.030%0.030%0.040%
Silicon0.15 – 0.35%1.00% max1.00% max0.15 – 0.35


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ASTM A193 Grade B7m Hex Bolt

ASTM A193 Grade B7m Hex Bolt
  • ASTM A193 Grade B7m Hex Bolt
  • ASTM A193 Grade B7m Hex Bolt
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Approx. Price: Rs 1 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
Head TypeHex Head, Roun Head, Square Head, Socket Head, Allen Head, Countersunk
Metric SizeM3 to M180
Inch Size3/8" to 5"
Length.5MM to 3000MM, 0.05 MTR to 3 MTR
Surface FinishPTFE Coated, Hot Dip Galvanized, Yellow Zinc Plated, Blue Zinc Plated, Black Zinc Plated
Surface FinishZinc Cobalt Plated, Aluminium Zinc Flake Coated, Black Phosphate, Zinc Plated, Nickel Plated
Surface FinishCadmium Plated, Chrome Plated, Copper Plated, Silver Plated, Tin Plated
Thread LengthHalf Thread, Full Thread, Double End Threaded, One End Threaded, Customized Thread Length
Thread SeriesUNC / UNF / 8UN, BSW
Bolt TypeHex Bolts, Heavy Hex Bolts, Hollow Hex Bolt, Hollow Allen Bolt, Machine Bolt, Socket Head Cap Screw
Bolt TypeAllen Head Cap Screw, Hex Flange Bolt, Eye Bolt, Lag Bolt, J Bolt, U Bolt, Shoulder Bolt, Elevator B
Bolt TypeHanger Bolt, Carriage Bolt, Anchor Bolt, Counter Sunk Bolt, Stud Bolt, Square Head Bolt
Bolt TypeFull Threaded Stud, Double End Threaded Stud
Nut TypeHex Nut, Heavy Hex Nut, Jam Nut, Coupling Nut, Hex Cap Nut, Hex Flange Nut, Hex Weld Nut, Square Nut
Nut TypeSquare Thin Nut, Square Weld Nut, Acorn Nut, Lifting Eye Nut, Wing Nut, T-Slot Nut, Nylock Nut
Nut TypeNylon Nut, Nylock Jam Nut, K Lock Nut, 2 Way Lock Nut, Slotted Castle Nut,
Washer TypePlain Washer, Flat Washer, Lock Washer, Spring Washer, Tab Washer, Shim Washer, Internal Tab Washer
Washer TypeSquare Washer, Square Beveled Washer, Hex Washer, External Tooth Lock Washer, Fender Washer
Washer TypeInternal Tooth Lock Washer, Curved Wave Washer, Conical Spring Washer, Self Locking Washer,
PackingPlastic Sleeve on Threads + Thermacol Roll + Plastic Roll
MakeUnifit Metalloys Inc, India
ASTM GradesASTM A193 B5 Bolts, ASTM A193 B6 Bolts, ASTM A193 B7 Bolts, ASTM A193 B7M Bolts
ASTM GradesASTM A193 B16 Bolts, ASTM A193 B8 Bolts
ASTM GradesASTM A193 B8 class 1 Bolts, ASTM A193 B8 class 2 Bolts, ASTM A193 B8 class 2B Bolts,
ASTM GradesASTM A193 B8A Bolts, ASTM A193 B8C Bolts
ASTM GradesASTM A193 B8C class 1 Bolts, ASTM A193 B8C class 2 Bolts, ASTM A193 B8CA Bolts,
ASTM GradesASTM A193 B8CLN Bolts, ASTM A193 B8CLN class 1 Bolts
ASTM GradesASTM A193 B8CLN class 1D Bolts, ASTM A193 BCLNA Bolts, ASTM A193 B8LN Bolts,
ASTM GradesASTM A193 B8LN class 1 Bolts, ASTM A193 B8LN class 1D Bolts
ASTM GradesASTM A193 B8LNA Bolts, ASTM A193 B8M Bolts, ASTM A193 B8M class 1 Bolts,
ASTM GradesASTM A193 B8M class 2 Bolts, ASTM A193 B8M2 Bolts
ASTM GradesASTM A193 B8M3 Bolts, ASTM A193 B8MA Bolts, ASTM A193 B8MLCuN Bolts,
ASTM GradesASTM A193 B8MLCuN Class 1B Bolts, ASTM A193 B8MLCuN Class 1D Bolts
ASTM GradesASTM A193 B8MLCuN Class 2 Bolts, ASTM A193 B8MLCuNA Bolts, ASTM A193 B8MLN Bolts
ASTM GradesASTM A193 B8MLNA Bolts, ASTM A193 B8MN Bolts
ASTM GradesASTM A193 B8MN Class 1B Bolts, ASTM A193 B8MN Class 1D Bolts, ASTM A193 B8MN Class 2 Bolts,
ASTM GradesASTM A193 B8MNA Bolts, ASTM A193 B8N Bolts
ASTM GradesASTM A193 B8N Class 1B Bolts, ASTM A193 B8N Class 1D Bolts, ASTM A193 B8N Class 2 Bolts,
ASTM GradesASTM A193 B8NA Bolts, ASTM A193 B8P Bolts
ASTM GradesASTM A193 B8PA Bolts, ASTM A193 B8R Bolts, ASTM A193 B8R Class 1C Bolts,
ASTM GradesASTM A193 B8R Class 1D Bolts, ASTM A193 B8RA Bolts
ASTM GradesASTM A193 B8S Bolts, ASTM A193 B8SA Bolts, ASTM A193 B8T Bolts, ASTM A193 B8T Class 1 Bolts,
ASTM GradesASTM A193 B8T Class 2 Bolts, ASTM A193 B8TA Bolts
ASTM GradesASTM A307 GRADE A BOLTS, ASTM A307 GRADE B BOLTS
ASTM GradesASTM A320 Grade L7 Bolts, ASTM A320 Grade L7M Bolts, ASTM A320 Grade L43 Bolts
ASTM GradesASTM A320 Grade B8 Bolts, ASTM A320 Grade B8M Bolts, ASTM A320 Grade B8T Bolts
ASTM GradesASTM A320 Grade B8C Bolts
ASTM GradesASTM A325 Type 1 Bolts, ASTM A325 Type 2 Bolts, ASTM A325 Type 3 Bolts,
ASTM GradesASTM A453 Grade 660 Bolts, ASTM A453 Grade 651 Bolts,
ASTM GradesASTM A453 Grade 662 Bolts, ASTM A453 Grade 665 Bolts,
ASTM GradesASTM A453 Grade 668 Bolts, ASTM A1014 UNS N07718 Bolts
ASTM GradesASTM A1082 UNS S31100 Bolts, ASTM A1082 UNS S31260 Bolts, ASTM A1082 UNS S31803 Bolts
ASTM GradesASTM A1082 UNS S32101 Bolts, ASTM A1082 UNS S32202 Bolts, ASTM A1082 UNS S32205 Bolts
ASTM GradesASTM A1082 UNS S32304 Bolts, ASTM A1082 UNS S32506 Bolts, ASTM A1082 UNS S32550 Bolts
ASTM GradesASTM A1082 UNS S32950 Bolts, ASTM A1082 UNS S39277 Bolts, ASTM A1082 UNS S15700 Bolts
ASTM GradesASTM A1082 UNS S17400 Bolts, ASTM A1082 UNS S17600 Bolts, ASTM A1082 UNS S17700 Bolts
ASTM GradesASTM A1082 UNS S35500 Bolts
ASTM GradesASTM F468 UNS C11000 Bolts, ASTM F468 UNS C26000 Bolts,
ASTM GradesASTM F468 UNS C27000 Bolts, ASTM F468 UNS C46200 Bolts
ASTM GradesASTM F468 UNS C46400 Bolts, ASTM F468 UNS C51000 Bolts,
ASTM GradesASTM F468 UNS C61300 Bolts, ASTM F468 UNS C61400 Bolts
ASTM GradesASTM F468 UNS C63000 Bolts, ASTM F468 UNS C64200 Bolts,
ASTM GradesASTM F468 UNS C65100 Bolts, ASTM F468 UNS C65500 Bolts
ASTM GradesASTM F468 UNS C66100 Bolts, ASTM F468 UNS C67500 Bolts,
ASTM GradesASTM F468 UNS C71000 Bolts, ASTM F468 UNS C71500 Bolts
ASTM GradesASTM F468 UNS N10001 Bolts, ASTM F468 UNS N10276 Bolts, Q
ASTM GradesASTM F468 UNS N04400 Bolts, ASTM F468 UNS N05500 Bolts
ASTM GradesASTM F468 UNS N06059 Bolts, ASTM F468 UNS N06625 Bolts
ASTM GradesASTM F468 UNS N06686 Bolts, ASTM F468 UNS A92024 Bolts
ASTM GradesASTM F468 UNS A96061 Bolts, ASTM F468 UNS A97075 Bolts
ASTM GradesASTM F468 UNS R50250 Bolts, ASTM F468 UNS R50400 Bolts
ASTM GradesASTM F468 UNS R56400 Bolts, ASTM F468 UNS R56401 Bolts, ASTM F468 UNS R52400 Bolts
ASTM GradesASTM F468 UNS R58640 Bolts, ASTM F468 UNS R55111 Bolts
ASTM GradesASTM F568M Grade Class 4.6 Bolts, ASTM F568M Grade Class 4.8 Bolts,
ASTM GradesASTM F568M Grade Class 5.8 Bolts, ASTM F568M Grade Class 8.8 Bolts
ASTM GradesASTM F568M Grade Class 8.8.3 Bolts, ASTM F568M Grade Class 9.8 Bolts,
ASTM GradesASTM F568M Grade Class 10.9 Bolts,
ASTM GradesASTM F568M Grade Class 10.9.3 Bolts, ASTM F568M Grade Class 12.9 Bolts
ASTM GradesASTM A194 Grade 8R Nuts, ASTM A194 Grade 8RA Nuts, ASTM A194 Grade 8S Nuts
ASTM GradesASTM A194 Grade 8SA Nuts, ASTM A194 Grade 8F Nuts
ASTM GradesASTM A194 Grade 2H Nuts, ASTM A194 Grade 2HM Nuts, ASTM A194 Grade 3 Nuts,
ASTM GradesASTM A194 Grade 4 Nuts, ASTM A194 Grade 6 Nuts
ASTM GradesASTM A194 Grade 6F Nuts, ASTM A194 Grade 7 Nuts, ASTM A194 Grade 7M Nuts
ASTM GradesCupro-Nickel 90/10 (UNS C70600 / W.Nr 2.0872), Cupro-Nickel 70/30 (UNS S71500 / NES780)
ASTM GradesASTM A194 Grade 8C Nuts, ASTM A194 Grade 8CLN Nuts, ASTM A194 Grade 8M Nuts,
ASTM GradesASTM A194 Grade 8T Nuts, ASTM A194 Grade 8P Nuts
ASTM GradesASTM A194 Grade 8N Nuts, ASTM A194 Grade 8MN Nuts, ASTM A194 Grade 8LN Nuts
ASTM GradesASTM A194 Grade 8MLN Nuts, ASTM A194 Grade MICuN Nuts
ASTM GradesASTM A194 Grade 9C Nuts, ASTM A194 Grade 8A Nuts, ASTM A194 Grade 8CA Nuts
ASTM GradesASTM A194 Grade 8CLNA Nuts, ASTM A194 Grade 8MA Nuts
ASTM GradesASTM A194 Grade 8TA Nuts, ASTM A194 Grade 8FA Nuts, ASTM A194 Grade 8PA Nuts,
ASTM GradesASTM A194 Grade 8NA Nuts, ASTM A194 Grade 8MNA Nuts
ASTM GradesASTM A194 Grade 8LNA Nuts, ASTM A194 Grade 8MLNA Nuts,
ASTM GradesASTM A194 Grade 8MLCuNA Nuts, ASTM A194 Grade 9CA Nuts
ASTM GradesASTM F467 UNS C11000 Nuts, ASTM F467 UNS C26000 Nuts,
ASTM GradesASTM F467 UNS C27000 Nuts, ASTM F467 UNS C46200 Nuts
ASTM GradesASTM F467 UNS C46400 Nuts, ASTM F467 UNS C51000 Nuts, ASTM F467 UNS C61300 Nuts
ASTM GradesASTM F467 UNS C61400 Nuts, ASTM F467 UNS C63000 Nuts
ASTM GradesASTM F467 UNS C64200 Nuts, ASTM F467 UNS C65100 Nuts, ASTM F467 UNS C65500 Nuts
ASTM GradesASTM F467 UNS C66100 Nuts
ASTM GradesASTM F467 UNS C67500 Nuts, ASTM F467 UNS C71000 Nuts, ASTM F467 UNS C71500 Nuts,
ASTM GradesASTM F467 UNS N10001 Nuts
ASTM GradesASTM F467 UNS N10276 Nuts, ASTM F467 UNS N04400 Nuts, ASTM F467 UNS N05500 Nuts
ASTM GradesASTM F467 UNS N06059 Nuts
ASTM GradesASTM F467 UNS N06625 Nuts, ASTM F467 UNS N06686 Nuts, ASTM F467 UNS A92024 Nuts,
ASTM GradesASTM F467 UNS A96061 Nuts
ASTM GradesASTM F467 UNS A97075 Nuts, ASTM F467 UNS R50250 Nuts, ASTM F467 UNS R50400 Nuts,
ASTM GradesASTM F467 UNS R56400 Nuts
ASTM GradesASTM F467 UNS R56401 Nuts, ASTM F467 UNS R52400 Nuts, ASTM F467 UNS R58640 Nuts
ASTM GradesASTM F467 UNS R55111 Nuts
Stainless Steel GradesStainless Steel 304 (UNS S30400 / W.Nr 1.4301),Stainless Steel 304L (UNS S30403 / W.Nr 1.4306)
Stainless Steel GradesStainless Steel 304H (UNS S30409 / W.Nr 1.4948), Stainless Steel 316 (UNS S31600 / W.Nr 1.4401)
Stainless Steel GradesStainless Steel 316L (UNS S31603 / W.Nr 1.4404), Stainless Steel 316H (UNS S31609 / W.Nr.1.4919)
Stainless Steel GradesStainless Steel 317L (UNS S31700 / W.Nr 1.4438)
Stainless Steel GradesStainless Steel 904L (UNS N08904 / W.Nr 1.4539 / URANUS B6)
Stainless Steel GradesStainless Steel 321 (UNS S32100 / W.Nr 1.4541) , Stainless Steel 347 (UNS S34700 / W.Nr 1.4550)
Stainless Steel GradesStainless Steel 316Ti (UNS S31635 / W.Nr 1.4571) , Stainless Steel 310S (UNS S31008 / W.Nr 1.4845)
Stainless Steel GradesStainless Steel 347H (UNS S34709 / W.Nr 1.4961) ,Stainless Steel 321H (UNS S32109 / W.Nr 1.4878)
Stainless Steel GradesStainless Steel 410 (UNS S41000 / W.Nr 1.4006), Stainless Steel 420 (UNS S42000 / W.Nr 1.4021)
Duplex Steel GradeDuplex 31803 (UNS S31803 / W.Nr 1.4462 / F51), Duplex 32205 (UNS S32205 / W.Nr 1.4462 / F51)
Super Duplex Steel GradeSuper Duplex 32760 (UNS S32760 / W.Nr 1.4501/ F53), Super Duplex 2507 (UNS S32750 / W.Nr 1.4410/ F53
Nickel GradeNickel 200 (UNS N02200 / W.Nr 2.4066), Nickel 201 (UNS N02201 / W.Nr 2.4068)
Hastelloy GradesHastelloy C276 (UNS N10276 / W.Nr 2.4819), Hastelloy C22 (UNS N06022 / W.Nr 2.4602)
Monel GradesMonel 400 (UNS N04400 / W.Nr 2.4360), Monel K500 (UNS N05500 / W.Nr 2.4375)
Inconel GradesInconel 600 (UNS N06600 / W.Nr 2.4816), Inconel 601 (UNS N06601 / W.Nr 2.4851)
Inconel GradesInconel 625 (UNS N06625 / W.Nr 2.4856)
Inconel GradesInconel 718 (UNS N07718 / W.Nr 2.4668), Inconel 825 (UNS N08825 / W.Nr 2.4858)
Inconel GradesInconel 800 (UNS N08800 / W.Nr 1.4876) Inconel 800H (UNS N08810 / W.Nr 1.4958),
Inconel GradesInconel 800HT (UNS N08811 / W.Nr 1.4959)
Incoloy GradeIncoloy 800 (UNS N08800 / W.Nr 1.4876) Incoloy 800H (UNS N08810 / W.Nr 1.4958)
Incoloy GradeIncoloy 800HT (UNS N08811 / W.Nr 1.4959)
Titanium GradesTitanium Grade 2 (UNS R50400 / W.Nr 3.7035), Titanium Grade 5 (UNS R56400 / W.Nr 3.7164/65)
Titanium GradesTitanium Grade 7 (UNS R52400 / W.Nr 3.7235)
Cupro-Nickel GradesCupro-Nickel 90/10 (UNS C70600 / W.Nr 2.0872), Cupro-Nickel 70/30 (UNS S71500 / NES780)
Special GradesAlloy 20 (UNS N08020 / W.Nr 2.4660), SMO 254 (UNS S31254 / W.Nr 1.4547)
Alloy Steel GradesAlloy Steel F1 (UNS K11522 / W.Nr 1.5415), Alloy Steel F5 (UNS K41545 / W.Nr 1.7362),
Alloy Steel GradesAlloy Steel F9 (UNS K90941 / W.Nr 1.7386),
Alloy Steel GradesAlloy Steel F11 (UNS K11597 / W.Nr 1.7335), Alloy Steel F12 (UNS K11562 / W.Nr 1.7338),
Alloy Steel GradesAlloy Steel F91 (UNS K91560 / W.Nr 1.4903)
Alloy Steel GradesAlloy Steel F22 (UNS K21590 / W.Nr 1.7380)

UNIFIT METALLOYS INC is a Manufauring,Supplier & Exporter of ASTM A193 Grade B7M Hex Bolts are used very commonly in petrochemical plants, Chemical Plants, fertilizer plants shipyards etc mostly for flange joints. B7M Hex bolts have high tensile strength and are governed by ASTM A193 Grade Standard.

 

A193 Grade B7M Class Bolts are manufactured from AISI 4140/4142 low Carbon Alloy Steel Grades followed by quencing & tempering. UMI manufactures these Bolts with great Precision & Quality. These grade bolts are also denoted as Grade 7M Bolts, B7M Bolts etc. We Also offer B7M Studs/B7M threaded bars/B7M Threaded rods. Unifit Metalloys Inc Stocks & Supply these Bolt Fasteners in various sizes & Coatings.

 

Unifit Metalloys Inc is a pioneer in ASTM A193 B7, L7 & B7M Hex Bolts.

 

Releated Keywords for ASTM A193 Grade B7M Bolts:  A193 B7M Bolts, A193 B7M Studs, A193 Fasteners, ASTM A193 Fasteners, B7M Bolts, B7M Threaded Rods

A193 MECHANICAL PROPERTIES 
GradeSizeTensile ksi, minYield, ksi, minElong, %, minRA % minHBWHRC
B7Up to 2-1/21251051650321 max35 max
2-5/8 – 4115951650
4-1/8 – 7100751850
B8 Class 1All75303050223 max35 max
B8M Class 1All75303050223 max96 max
B8 Class 2Up to 3/41251001235321 max35 max
7/8 – 1115801535
1-1/8 – 1-1/4105652035
1-3/8 – 1-1/2100502845
B8M Class 2Up to 3/4110951545321 max35 max
7/8 – 1100802045
1-1/8 – 1-1/495652545
1-3/8 – 1-1/290503045
A193 CHEMICAL PROPERTIES 
ElementB7 (AISI 4140)B8 (AISI 304)B8M (AISI 316)
Carbon0.37 – 0.49%0.08% max0.08% max
Manganese0.65 – 1.10%2.00% max2.00% max
Phosphorus, max0.035%0.045%0.045%
Sulfur, max0.040%0.030%0.030%
Silicon0.15 – 0.35%1.00% max1.00% max
Chromium0.75 – 1.20%18.0 – 20.0%16.0 – 18.0%
Nickel 8.0 – 11.0%10.0 – 14.0%
Molybdenum0.15 – 0.25% 2.00 – 3.00%
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Lock Washer

Lock Washer
  • Lock Washer
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Product Details:

Minimum Order Quantity1 Piece
Metric SizeM3 to M180
Inch Size3/8" to 5"
Length5MM to 3000MM, 0.05 MTR to 3 MTR
Surface Finish.PTFE Coated, Hot Dip Galvanized, Yellow Zinc Plated, Blue Zinc Plated, Black Zinc Plated
Surface Finish.Zinc Cobalt Plated, Aluminium Zinc Flake Coated, Black Phosphate, Zinc Plated, Nickel Plated
Surface Finish.Cadmium Plated, Chrome Plated, Copper Plated, Silver Plated, Tin Plated
Thread LengthHalf Thread, Full Thread, Double End Threaded, One End Threaded, Customized Thread Length
Thread SeriesUNC / UNF / 8UN, BSW
Head TypeHex Head, Roun Head, Square Head, Socket Head, Allen Head, Countersunk
Bolt TypeHex Bolts, Heavy Hex Bolts, Hollow Hex Bolt, Hollow Allen Bolt, Machine Bolt, Socket Head Cap Screw
Bolt TypeAllen Head Cap Screw, Hex Flange Bolt, Eye Bolt, Lag Bolt, J Bolt, U Bolt, Shoulder Bolt, Elevator B
Bolt TypeHanger Bolt, Carriage Bolt, Anchor Bolt, Counter Sunk Bolt, Stud Bolt, Square Head Bolt
Bolt TypeFull Threaded Stud, Double End Threaded Stud
Nut TypeHex Nut, Heavy Hex Nut, Jam Nut, Coupling Nut, Hex Cap Nut, Hex Flange Nut, Hex Weld Nut, Square Nut
Nut TypeSquare Thin Nut, Square Weld Nut, Acorn Nut, Lifting Eye Nut, Wing Nut, T-Slot Nut, Nylock Nut
Nut TypeNylon Nut, Nylock Jam Nut, K Lock Nut, 2 Way Lock Nut, Slotted Castle Nut,
Washer TypePlain Washer, Flat Washer, Lock Washer, Spring Washer, Tab Washer, Shim Washer, Internal Tab Washer
Washer TypeSquare Washer, Square Beveled Washer, Hex Washer, External Tooth Lock Washer, Fender Washer
Washer TypeInternal Tooth Lock Washer, Curved Wave Washer, Conical Spring Washer, Self Locking Washer,
PackingPlastic Sleeve on Threads + Thermacol Roll + Plastic Roll
MakeUnifit Metalloys Inc, India
ASTM GradesASTM A193 B5 Bolts, ASTM A193 B6 Bolts, ASTM A193 B7 Bolts, ASTM A193 B7M Bolts
ASTM GradesASTM A193 B16 Bolts, ASTM A193 B8 Bolts
ASTM GradesASTM A193 B8 class 1 Bolts, ASTM A193 B8 class 2 Bolts, ASTM A193 B8 class 2B Bolts,
ASTM GradesASTM A193 B8A Bolts, ASTM A193 B8C Bolts
ASTM GradesASTM A193 B8C class 1 Bolts, ASTM A193 B8C class 2 Bolts, ASTM A193 B8CA Bolts,
ASTM GradesASTM A193 B8CLN Bolts, ASTM A193 B8CLN class 1 Bolts
ASTM GradesASTM A193 B8CLN class 1D Bolts, ASTM A193 BCLNA Bolts, ASTM A193 B8LN Bolts,
ASTM GradesASTM A193 B8LN class 1 Bolts, ASTM A193 B8LN class 1D Bolts
ASTM GradesASTM A193 B8LNA Bolts, ASTM A193 B8M Bolts, ASTM A193 B8M class 1 Bolts,
ASTM GradesASTM A193 B8M class 2 Bolts, ASTM A193 B8M2 Bolts
ASTM GradesASTM A193 B8M3 Bolts, ASTM A193 B8MA Bolts, ASTM A193 B8MLCuN Bolts,
ASTM GradesASTM A193 B8MLCuN Class 1B Bolts, ASTM A193 B8MLCuN Class 1D Bolts
ASTM GradesASTM A193 B8MLCuN Class 2 Bolts, ASTM A193 B8MLCuNA Bolts, ASTM A193 B8MLN Bolts
ASTM GradesASTM A193 B8MLNA Bolts, ASTM A193 B8MN Bolts
ASTM GradesASTM A193 B8MN Class 1B Bolts, ASTM A193 B8MN Class 1D Bolts, ASTM A193 B8MN Class 2 Bolts,
ASTM GradesASTM A193 B8MNA Bolts, ASTM A193 B8N Bolts
ASTM GradesASTM A193 B8N Class 1B Bolts, ASTM A193 B8N Class 1D Bolts, ASTM A193 B8N Class 2 Bolts,
ASTM GradesASTM A193 B8NA Bolts, ASTM A193 B8P Bolts
ASTM GradesASTM A193 B8PA Bolts, ASTM A193 B8R Bolts, ASTM A193 B8R Class 1C Bolts,
ASTM GradesASTM A193 B8R Class 1D Bolts, ASTM A193 B8RA Bolts
ASTM GradesASTM A193 B8S Bolts, ASTM A193 B8SA Bolts, ASTM A193 B8T Bolts, ASTM A193 B8T Class 1 Bolts,
ASTM GradesASTM A193 B8T Class 2 Bolts, ASTM A193 B8TA Bolts
ASTM GradesASTM A307 GRADE A BOLTS, ASTM A307 GRADE B BOLTS
ASTM GradesASTM A320 Grade L7 Bolts, ASTM A320 Grade L7M Bolts, ASTM A320 Grade L43 Bolts
ASTM GradesASTM A320 Grade B8 Bolts, ASTM A320 Grade B8M Bolts, ASTM A320 Grade B8T Bolts
ASTM GradesASTM A320 Grade B8C Bolts
ASTM GradesASTM A325 Type 1 Bolts, ASTM A325 Type 2 Bolts, ASTM A325 Type 3 Bolts,
ASTM GradesASTM A453 Grade 660 Bolts, ASTM A453 Grade 651 Bolts,
ASTM GradesASTM A453 Grade 662 Bolts, ASTM A453 Grade 665 Bolts,
ASTM GradesASTM A453 Grade 668 Bolts, ASTM A1014 UNS N07718 Bolts
ASTM GradesASTM A1082 UNS S31100 Bolts, ASTM A1082 UNS S31260 Bolts, ASTM A1082 UNS S31803 Bolts
ASTM GradesASTM A1082 UNS S32101 Bolts, ASTM A1082 UNS S32202 Bolts, ASTM A1082 UNS S32205 Bolts
ASTM GradesASTM A1082 UNS S32304 Bolts, ASTM A1082 UNS S32506 Bolts, ASTM A1082 UNS S32550 Bolts
ASTM GradesASTM A1082 UNS S32750 Bolts, ASTM A1082 UNS S32760 Bolts, ASTM A1082 UNS S32906 Bolts
ASTM GradesASTM A1082 UNS S32950 Bolts, ASTM A1082 UNS S39277 Bolts, ASTM A1082 UNS S15700 Bolts
ASTM GradesASTM A1082 UNS S17400 Bolts, ASTM A1082 UNS S17600 Bolts, ASTM A1082 UNS S17700 Bolts
ASTM GradesASTM A1082 UNS S35500 Bolts
ASTM GradesASTM F468 UNS C11000 Bolts, ASTM F468 UNS C26000 Bolts,
ASTM GradesASTM F468 UNS C27000 Bolts, ASTM F468 UNS C46200 Bolts
ASTM GradesASTM F468 UNS C46400 Bolts, ASTM F468 UNS C51000 Bolts,
ASTM GradesASTM F468 UNS C61300 Bolts, ASTM F468 UNS C61400 Bolts
ASTM GradesASTM F468 UNS C63000 Bolts, ASTM F468 UNS C64200 Bolts,
ASTM GradesASTM F468 UNS C65100 Bolts, ASTM F468 UNS C65500 Bolts
ASTM GradesASTM F468 UNS C66100 Bolts, ASTM F468 UNS C67500 Bolts,
ASTM GradesASTM F468 UNS C71000 Bolts, ASTM F468 UNS C71500 Bolts
ASTM GradesASTM F468 UNS N10001 Bolts, ASTM F468 UNS N10276 Bolts,
ASTM GradesASTM F468 UNS N04400 Bolts, ASTM F468 UNS N05500 Bolts
ASTM GradesASTM F468 UNS N06059 Bolts, ASTM F468 UNS N06625 Bolts
ASTM GradesASTM F468 UNS N06686 Bolts, ASTM F468 UNS A92024 Bolts
ASTM GradesASTM F468 UNS A96061 Bolts, ASTM F468 UNS A97075 Bolts
ASTM GradesASTM F468 UNS R50250 Bolts, ASTM F468 UNS R50400 Bolts
ASTM GradesASTM F468 UNS R56400 Bolts, ASTM F468 UNS R56401 Bolts, ASTM F468 UNS R52400 Bolts
ASTM GradesASTM F468 UNS R58640 Bolts, ASTM F468 UNS R55111 Bolts
ASTM GradesASTM F568M Grade Class 4.6 Bolts, ASTM F568M Grade Class 4.8 Bolts,
ASTM GradesASTM F568M Grade Class 5.8 Bolts, ASTM F568M Grade Class 8.8 Bolts
ASTM GradesASTM F568M Grade Class 8.8.3 Bolts, ASTM F568M Grade Class 9.8 Bolts,
ASTM GradesASTM F568M Grade Class 10.9 Bolts,
ASTM GradesASTM F568M Grade Class 10.9.3 Bolts, ASTM F568M Grade Class 12.9 Bolts
ASTM GradesASTM A194 Grade 8R Nuts, ASTM A194 Grade 8RA Nuts, ASTM A194 Grade 8S Nuts
ASTM GradesASTM A194 Grade 8SA Nuts, ASTM A194 Grade 8F Nuts
ASTM GradesASTM A194 Grade 2H Nuts, ASTM A194 Grade 2HM Nuts, ASTM A194 Grade 3 Nuts,
ASTM GradesASTM A194 Grade 4 Nuts, ASTM A194 Grade 6 Nuts
ASTM GradesASTM A194 Grade 6F Nuts, ASTM A194 Grade 7 Nuts, ASTM A194 Grade 7M Nuts
ASTM GradesASTM A194 Grade 16 Nuts, ASTM A194 Grade 8 Nuts
ASTM GradesASTM A194 Grade 8C Nuts, ASTM A194 Grade 8CLN Nuts, ASTM A194 Grade 8M Nuts,
ASTM GradesASTM A194 Grade 8T Nuts, ASTM A194 Grade 8P Nuts
ASTM GradesASTM A194 Grade 8N Nuts, ASTM A194 Grade 8MN Nuts, ASTM A194 Grade 8LN Nuts
ASTM GradesASTM A194 Grade 8MLN Nuts, ASTM A194 Grade MICuN Nuts
ASTM GradesASTM A194 Grade 9C Nuts, ASTM A194 Grade 8A Nuts, ASTM A194 Grade 8CA Nuts
ASTM GradesASTM A194 Grade 8CLNA Nuts, ASTM A194 Grade 8MA Nuts
ASTM GradesASTM A194 Grade 8TA Nuts, ASTM A194 Grade 8FA Nuts, ASTM A194 Grade 8PA Nuts,
ASTM GradesASTM A194 Grade 8NA Nuts, ASTM A194 Grade 8MNA Nuts
ASTM GradesASTM A194 Grade 8LNA Nuts, ASTM A194 Grade 8MLNA Nuts,
ASTM GradesASTM A194 Grade 8MLCuNA Nuts, ASTM A194 Grade 9CA Nuts
ASTM GradesASTM F467 UNS C11000 Nuts, ASTM F467 UNS C26000 Nuts,
ASTM GradesASTM F467 UNS C27000 Nuts, ASTM F467 UNS C46200 Nuts
ASTM GradesASTM F467 UNS C46400 Nuts, ASTM F467 UNS C51000 Nuts, ASTM F467 UNS C61300 Nuts
ASTM GradesASTM F467 UNS C61400 Nuts, ASTM F467 UNS C63000 Nuts
ASTM GradesASTM F467 UNS C64200 Nuts, ASTM F467 UNS C65100 Nuts, ASTM F467 UNS C65500 Nuts
ASTM GradesASTM F467 UNS C66100 Nuts
ASTM GradesASTM F467 UNS C67500 Nuts, ASTM F467 UNS C71000 Nuts, ASTM F467 UNS C71500 Nuts,
ASTM GradesASTM F467 UNS N10001 Nuts
ASTM GradesASTM F467 UNS N10276 Nuts, ASTM F467 UNS N04400 Nuts, ASTM F467 UNS N05500 Nuts
ASTM GradesASTM F467 UNS N06059 Nuts
ASTM GradesASTM F467 UNS N06625 Nuts, ASTM F467 UNS N06686 Nuts, ASTM F467 UNS A92024 Nuts,
ASTM GradesASTM F467 UNS A96061 Nuts
ASTM GradesASTM F467 UNS A97075 Nuts, ASTM F467 UNS R50250 Nuts, ASTM F467 UNS R50400 Nuts,
ASTM GradesASTM F467 UNS R56400 Nuts
ASTM GradesASTM F467 UNS R56401 Nuts, ASTM F467 UNS R52400 Nuts, ASTM F467 UNS R58640 Nuts
ASTM GradesASTM F467 UNS R55111 Nuts
Stainless Steel GradesStainless Steel 304 (UNS S30400 / W.Nr 1.4301),Stainless Steel 304L (UNS S30403 / W.Nr 1.4306)
Stainless Steel GradesStainless Steel 304H (UNS S30409 / W.Nr 1.4948), Stainless Steel 316 (UNS S31600 / W.Nr 1.4401)
Stainless Steel GradesStainless Steel 316L (UNS S31603 / W.Nr 1.4404), Stainless Steel 316H (UNS S31609 / W.Nr.1.4919)
Stainless Steel GradesStainless Steel 317L (UNS S31700 / W.Nr 1.4438)
Stainless Steel GradesStainless Steel 904L (UNS N08904 / W.Nr 1.4539 / URANUS B6)
Stainless Steel GradesStainless Steel 321 (UNS S32100 / W.Nr 1.4541) , Stainless Steel 347 (UNS S34700 / W.Nr 1.4550)
Stainless Steel GradesStainless Steel 316Ti (UNS S31635 / W.Nr 1.4571) , Stainless Steel 310S (UNS S31008 / W.Nr 1.4845)
Stainless Steel GradesStainless Steel 347H (UNS S34709 / W.Nr 1.4961) ,Stainless Steel 321H (UNS S32109 / W.Nr 1.4878)
Stainless Steel GradesStainless Steel 410 (UNS S41000 / W.Nr 1.4006), Stainless Steel 420 (UNS S42000 / W.Nr 1.4021)
Duplex Steel GradeDuplex 31803 (UNS S31803 / W.Nr 1.4462 / F51), Duplex 32205 (UNS S32205 / W.Nr 1.4462 / F51)
Super Duplex Steel GradeSuper Duplex 32760 (UNS S32760 / W.Nr 1.4501/ F53), Super Duplex 2507 (UNS S32750 / W.Nr 1.4410/ F53
Nickel GradeNickel 200 (UNS N02200 / W.Nr 2.4066), Nickel 201 (UNS N02201 / W.Nr 2.4068)
Hastelloy GradesHastelloy C276 (UNS N10276 / W.Nr 2.4819), Hastelloy C22 (UNS N06022 / W.Nr 2.4602)
Monel GradesMonel 400 (UNS N04400 / W.Nr 2.4360), Monel K500 (UNS N05500 / W.Nr 2.4375)
Inconel GradesInconel 600 (UNS N06600 / W.Nr 2.4816), Inconel 601 (UNS N06601 / W.Nr 2.4851)
Inconel GradesInconel 625 (UNS N06625 / W.Nr 2.4856)
Inconel GradesInconel 718 (UNS N07718 / W.Nr 2.4668), Inconel 825 (UNS N08825 / W.Nr 2.4858)
Inconel GradesInconel 800 (UNS N08800 / W.Nr 1.4876) Inconel 800H (UNS N08810 / W.Nr 1.4958),
Inconel GradesInconel 800HT (UNS N08811 / W.Nr 1.4959)
Incoloy GradeIncoloy 800 (UNS N08800 / W.Nr 1.4876) Incoloy 800H (UNS N08810 / W.Nr 1.4958)
Incoloy GradeIncoloy 800HT (UNS N08811 / W.Nr 1.4959)
Titanium GradesTitanium Grade 2 (UNS R50400 / W.Nr 3.7035), Titanium Grade 5 (UNS R56400 / W.Nr 3.7164/65)
Titanium GradesTitanium Grade 7 (UNS R52400 / W.Nr 3.7235)
Cupro-Nickel GradesCupro-Nickel 90/10 (UNS C70600 / W.Nr 2.0872), Cupro-Nickel 70/30 (UNS S71500 / NES780)
Special GradesAlloy 20 (UNS N08020 / W.Nr 2.4660), SMO 254 (UNS S31254 / W.Nr 1.4547)
Alloy Steel GradesAlloy Steel F1 (UNS K11522 / W.Nr 1.5415), Alloy Steel F5 (UNS K41545 / W.Nr 1.7362),
Alloy Steel GradesAlloy Steel F9 (UNS K90941 / W.Nr 1.7386),
Alloy Steel GradesAlloy Steel F11 (UNS K11597 / W.Nr 1.7335), Alloy Steel F12 (UNS K11562 / W.Nr 1.7338),
Alloy Steel GradesAlloy Steel F91 (UNS K91560 / W.Nr 1.4903)
Alloy Steel GradesAlloy Steel F22 (UNS K21590 / W.Nr 1.7380)


Unifit Metalloys Inc is a Manufacuring,Supplying & Stockist of 
helical spring lock washers qualify under the major standards requirements established by ASME (the American Society of Mechanical Engineers) and DOD (Department of Defense) for components of this type.

Military Specifications
MS35338-, MS35340-, MS51416-, MS51415-, MS51848-, MS122029 thru MS122036, NAS1640, NAS1676 Also Ordnance series 12387272 – XX, 12387302 – XX

AMERICAN SOCIETY OF MECHANICAL ENGINEERS: ASME B 18.13, ASME B 18.21.1, ASME B 18.21.2M

MATERIALS

  • Carbon Steel – SAE 1055 – 1065
  • Boron Steel – 10B55 – 10B65
  • Alloy Steel – SAE 4037
  • Stainless Steel – SAE 304, SAE 316, SAE 420
  • Aluminum Alloy – ASTM-B 211, 7075
  • Phosphor Bronze – ASTM-B 159, Copper Alloy NO.510
  • Silicon Bronze – ASTM-B 99, Copper Alloy NO.651 or 655
  • Monel K500 – QQ – N – 286

Finishes
When carbon steel helical spring washers are required for galvanizing, this must be indicated on the order or inquiry. ASME standards call for such washers to be coiled to limits 0.020″ in excess of conventional standards. Galvanizing is not recommended for washers under a 1/4″ nominal size.

Helical washers are available in the following finishes:

  • Mechanical Zinc
  • Electro Zinc
  • Mechanical Galvanized
  • Hot Dip Galvanized,
  • Phosphate Coating
  • Black Oxide

Other materials and finishes are available on special request. Mechanical Finish will limit exposure to hydrogen embrittlement unless otherwise specified.

Hardness Testing

 

Figure 3

In preparing a helical spring washer for hardness testing, it should first be twisted to remove the helix and form a near flat surface.

Due to the trapezoidal cross section of the washer, both sides must be filed or ground flat to assure accu­rate readings. This also removes decarburization and plating from the surface. Care must be taken to assure that surface temperature does not exceed 250°F during this operation. (See figure 3.)

An essential requirement of the Rockwell test is that the penetrator be perpendicular to the surface of the test piece and that the test piece not move, in the slightest degree, as the test load is applied. One point of hardness represents a depth of only 0.00008″. A movement of only .001″ could cause an error of over 10 Rockwell numbers.

Penetration should be made in the center of the washer’s flattened surface and readings should not be taken too close together. If the indentation is made too close to the edge of the test washer, the material will yield, giving incorrect low readings. Also, the area surrounding the indent will be cold worked. Subsequent indentations, if made in the cold worked area, will give incorrect readings-usually higher that the virgin material. Also, test penetrations should be made on only one side of the washer.

The thickness of the test sample will determine the correct testing weight to use. Refer to Rockwell test charts to determine proper weight and scale use. To insure the most accurate read­ings, use the maximum weight possible. However, caution should be taken not to use a weight greater that the width and thickness will accommodate

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