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  • sales@jigneshsteel.com

SA 193 Gr B8m Hex Bolts & A193 B8m Threaded Rod manufacturer in India

What are ASTM A193 B8M Bolts?

A193 B8m material is 316 austenitic stainless steel with 18% chromium, 8% nickel and 4% molybdenum in the composition. This material composition provides very good corrosion resistance, strength and heat resistance to the astm a193 grade b8m studs and bolts. Jignesh Steel is a leading manufacturer and supplier of the different types of the bolts in various dimensions and types. The specification covers ASME B18.2.1 and B18.3 standards. The A193 specification is for high temperature bolting.

ASTM A193 b8m class 1 vs cl2 stud bolt?

The a193 b8m cl2 becomes stronger by the strain hardening process. These bolts are known for their operating temperature range from -198 degrees to 800 degrees Celsius. However, the astm a193 b8m class 2 bolts loose the tensile stress from the standard minimum at high temperatures. The minimum tensile strength of the material is 515MPa and the minimum yield strength is 205MPa. The bolts have 5H to 6H pencil hardness with kinetic friction coefficient ranging from 0.06 to 0.08. As a leading supplier of the different types of bolts we produce and supply the astm a193 b8m class 1 and class 2 bolts in various dimensions and standards for use in different industrial applications. Please feel free to contact us for more information and pricing of the different types of bolts.

Why use PTFE coating on astm a193 grade b8m studs?

The PTFE coating is very common as it makes the cleaning operations easy. The coating avoids any kind of rusting so that the bolt threads are saved from corroding after long times from installation. It is particularly useful in water related and marine environmental applications.

A193 b8m bolts and nuts hardness and temperature range

The material of the sa 193 gr b8m bolt can operate up to 870 degrees Celsius and therefore it is suitable for high temperature operations. The class 1 and 2 bolts are carbide solution treated, but the class 2 is strain hardened. The stud bolt astm a193 gr b8m also comes with different types of coating to prevent oxidation and to improve corrosion in harsh environments.

ASME SA 193 Gr B8m Fasteners

ASME SA 193 Gr B8m Fasteners

ASTM A193 Grade B8M Bolts

ASTM A193 Grade B8M Bolts

SA 193 Grade B8m Threaded Rod and Studs

SA 193 Grade B8m Threaded Rod and Studs

ASTM A193 gr B8m Hex Bolt

ASTM A193 gr B8m Hex Bolt

A193 Gr B8m Stud Bolt

A193 Gr B8m Stud Bolt

ASTM A193 B8m Nuts

ASTM A193 B8m Nuts

Manufacturer & supplier of ASTM A193 B8m Class 2 Heavy Hex Bolts, A193 Gr B8m Stud, SA 193 B8m Countersunk Screws and B8m Class 1 Square Head Bolts in India

ASTM A193 Grade B8M Bolts
ASTM A193 Grade B8M Bolts Price List India

Check updated price list of ASTM A193 Gr B8m Anchor Bolts, B8m Class 2 Socket Head Cap Screws and A193 B8m Cl2 Hex Head Bolt

Material Price in India
ASTM A193 Grade B8M Bolts, Long Full Thread with Nut and 2 P, Size M16 X 80 MM INR 225/Set
SA 193 Gr B8m Stud Bolt with 2 hex Nuts, Size 1 1/2 DIA X 12 INR 775/Pcs
ASTM A193 B8M Heavy Hex Bolts, Size: 7/16 X 1.3/4, UNF INR 30/Pcs

Call us or send us an email to sales@jigneshsteel.com for more price & sizes.

ASME SA 193 Gr B8m Fasteners Specifications
ASME SA 193 Gr B8m Bolts ANSI B18.2.1, DIN 931/ 933
ASTM A193 B8m Class 2 Hex Bolts Size Metric
  • Dia: M10 - M110
  • Length: 12 - 1200MM
SA 193 Grade B8m Hex Bolts Size Inch
  • Dia: 1/2" - 4.0"
  • Length: 1/2" - 52"
ASTM A193 gr B8m Eye Bolts Metric Size
  • Dia: M10 - M48
A193 Gr B8m Stud Bolt Metric Size
  • Dia: M10 - M110
  • Length: 12 mm - 6000 mm
ASTM A193 B8m Stud Bolt Inch
  • Dia: 1/2" - 4.1/2"
  • Length: 1/2" - 236"
A193 Grade B8m Hex Nut (DIA)
  • Metric: M6 - M110
  • Inch: 1/4" - 4.5"
ASME SA 193 Grade B8m Cl2 Plain Washer (DIA)
  • Metric: M6 - M110
  • Inch: 1/2" - 4.1/2"
ASTM A193 Grade B8M Bolts International Standard IS, ANSI, ASTM DIN, ISO, JIS, GB, ASME, BS, UNI
ASTM A193 Grade B8m Cl2 Bolts Standard Sizes M10, M4, M16, M36 M2.5, M6, M30, M12, M8, M14, M2, M3, M20, M24, M5 to M160
A193 B8m Fasteners Threads BSF, UNF METRIC, UNC, UNEF, BSW or as required
ASME/ ANSI - American Standard ASTM A193 Grade B8M Bolts
  • ANSI B 28.2.4 1M
  • ANSI B 18.2.4 2M
  • ASME B18.5
  • ASME B18.2.2
DIN German Standard ASTM A193 Grade B8M Bolts DIN 933, DIN 931, DIN 970, DIN 934
ISO Standard ASME SA 193 B8m Bolts ISO 4033, : ISO 4032, JIS standards
ASTM A193 Grade B8m Bolts / Screws Head Drive Phillips, Slotted, Phillips/Slot, Six-Lobe
MTC (Manufacturer Test Certificate) EN 10204 / 3.1
A193 B8m Class 1 Nut Bolt Finishing 
  • Zinc white, (yellow, black, blue), black oxide,
  • Dacroment, Geometry, plated zinc-nickel, anodizing, nickel plated,
  • Stainless steel: Passivated Self-Colour, Bright Zinc Plated (BZP),
  • Hot Dip Galvanised (HDG), Sherardized, DACROMET and Mechanically Applied coating
SA 193 B8m Fasteners Production Process
  • M2-M24: Cold Forging, hot forging
  • M24-M100, machining and CNC for Customized connecting element
ASTM A193 Grade B8M Bolts Coating
  • Xylon Coated Fasteners
  • Phosphate Coated Fasteners
  • Hot Dipped Galvanizing Coated Fasteners
  • Teflon Coated Fasteners
  • Zinc Coated Fasteners
  • Cadmium Coated Fasteners
  • Ptfe Coated (Teflon) Fasteners
ASTM A193 B8m Class 1 Fasteners Packing Wooden Pallet, Canton, Carton / Small Box or as required
Recommended Hardware for ASTM A193 B8m Bolts
Bolt Grade Nuts Washers
B8M Class 1 Bolts A194 Grade 8M SS316
B8M Class 2 Bolts A194 Grade 8M SS316
Types of ASTM A193 B8m Class 2 Bolts

Manufacturer of ASTM A193 Grade B8M Class 2 Eye Bolts & B8m Class 1 Threaded Bar, Stud Bolts in Custom sizes in Mumbai

ASME SA 193 Gr B8m Flange Bolts

ASME SA 193 Gr B8m Flange Bolts

ASTM A193 B8m Class 2 Heavy Hex Bolts

ASTM A193 B8m Class 2 Heavy Hex Bolts

SA 193 Grade B8m Hex Bolts

SA 193 Grade B8m Hex Bolts

ASTM A193 gr B8m Square Bolts

ASTM A193 gr B8m Square Bolts

A193 Gr B8m U Bolts

A193 Gr B8m U Bolts

ASTM A193 B8m Eye Bolts

ASTM A193 B8m Eye Bolts

ASME SA 193 Gr B8m Lag Bolts

ASME SA 193 Gr B8m Lag Bolts

ASTM A193 B8m Class 2 Anchor Bolts

ASTM A193 B8m Class 2 Anchor Bolts

SA 193 Grade B8m Hex Head Bolts

SA 193 Grade B8m Hex Head Bolts

ASTM A193 gr B8m Carriage Bolts

ASTM A193 gr B8m Carriage Bolts

A193 Gr B8m Allen Cap Bolt

A193 Gr B8m Allen Cap Bolt

ASTM A193 B8m Countersunk Bolts

ASTM A193 B8m Countersunk Bolts

SA 193 Grade B8m Nuts Types
ASME SA 193 Gr B8m Eye Nuts

ASME SA 193 Gr B8m Eye Nuts

ASTM A193 B8m Class 2 Heavy Hex Nuts

ASTM A193 B8m Class 2 Heavy Hex Nuts

SA 193 Grade B8m Hex Nuts

SA 193 Grade B8m Hex Nuts

ASTM A193 gr B8m Jam Nuts

ASTM A193 gr B8m Jam Nuts

A193 Gr B8m Lock Nuts

A193 Gr B8m Lock Nuts

ASTM A193 B8m Panel Nuts

ASTM A193 B8m Panel Nuts

A193 Grade B8m Square Nuts

A193 Grade B8m Square Nuts

ASME SA 193 Grade B8m Cl2 T-Nuts For Wood

ASME SA 193 Grade B8m Cl2 T-Nuts For Wood

ASTM A193 Grade B8m Cl2 Wheel Nuts and Caps

ASTM A193 Grade B8m Cl2 Wheel Nuts and Caps

A193 B8m Wing Nuts

A193 B8m Wing Nuts

ASME SA 193 B8m Cage Nuts and Spring Nuts

ASME SA 193 B8m Cage Nuts and Spring Nuts

ASTM A193 Grade B8m Self Locking Nuts

ASTM A193 Grade B8m Self Locking Nuts

ASTM A193 gr B8m Screws Types
A193 B8m Class 1 Tek Screws

A193 B8m Class 1 Tek Screws

SA 193 B8m Deck Screws

SA 193 B8m Deck Screws

ASTM A193 B8m Class 1 Concrete Screws

ASTM A193 B8m Class 1 Concrete Screws

SA 193 Gr B8m Socket Head Cap Screw

SA 193 Gr B8m Socket Head Cap Screw

ASME SA 193 Gr B8m Eye Screw

ASME SA 193 Gr B8m Eye Screw

ASTM A193 B8m Class 2 Thumb Screw

ASTM A193 B8m Class 2 Thumb Screw

SA 193 Grade B8m Wood Screw

SA 193 Grade B8m Wood Screw

ASTM A193 gr B8m Coach Screw

ASTM A193 gr B8m Coach Screw

A193 Gr B8m Hex Head Lag Screw

A193 Gr B8m Hex Head Lag Screw

ASTM A193 B8m 12-Point Flange Head Cap Screws

ASTM A193 B8m 12-Point Flange Head Cap Screws

A193 Grade B8m Wing Screw

A193 Grade B8m Wing Screw

ASME SA 193 Grade B8m Cl2 Captive Panel Screws

ASME SA 193 Grade B8m Cl2 Captive Panel Screws

ASTM A193 Grade B8m Cl2 Hex Cap Screw

ASTM A193 Grade B8m Cl2 Hex Cap Screw

A193 B8m Allen Cap Screw

A193 B8m Allen Cap Screw

ASME SA 193 B8m Grub Screw

ASME SA 193 B8m Grub Screw

ASTM A193 Grade B8m Fully Threaded Screw

ASTM A193 Grade B8m Fully Threaded Screw

A193 B8m Class 1 Torx Screw

A193 B8m Class 1 Torx Screw

SA 193 B8m Pan Head Screw

SA 193 B8m Pan Head Screw

ASTM A193 B8m Class 1 Truss Head Screw

ASTM A193 B8m Class 1 Truss Head Screw

SA 193 Gr B8m Flat Head Screw

SA 193 Gr B8m Flat Head Screw

Types of A193 Gr B8m Threaded Rod and Studs

Compare our price of ASTM A193 B8M Bolts before buying B8m Class 2 Bolts & A193 B8m Class 1 Fasteners

ASME SA 193 Gr B8m Stud Bolts

ASME SA 193 Gr B8m Stud Bolts

ASTM A193 B8m Class 2 Double Ended Studs

ASTM A193 B8m Class 2 Double Ended Studs

SA 193 Grade B8m Tie Rod

SA 193 Grade B8m Tie Rod

ASTM A193 gr B8m Fully Threaded Studs

ASTM A193 gr B8m Fully Threaded Studs

A193 Gr B8m Threaded Rod

A193 Gr B8m Threaded Rod

ASTM A193 B8m Unc Stud Bolt

ASTM A193 B8m Unc Stud Bolt

Different types of ASTM A193 B8m Washers
ASME SA 193 Gr B8m Cup Washer

ASME SA 193 Gr B8m Cup Washer

ASTM A193 B8m Class 2 Square Washer

ASTM A193 B8m Class 2 Square Washer

SA 193 Grade B8m Lock Washer

SA 193 Grade B8m Lock Washer

ASTM A193 gr B8m Countersunk Washer

ASTM A193 gr B8m Countersunk Washer

A193 Gr B8m Belleville Washer

A193 Gr B8m Belleville Washer

ASTM A193 B8m Shim Washer

ASTM A193 B8m Shim Washer

A193 Grade B8m Square Plate Washer

A193 Grade B8m Square Plate Washer

ASME SA 193 Grade B8m Cl2 Square Washer

ASME SA 193 Grade B8m Cl2 Square Washer

ASTM A193 Grade B8m Cl2 Penny Washer

ASTM A193 Grade B8m Cl2 Penny Washer

A193 B8m Machine Washers

A193 B8m Machine Washers

Polished ASME SA 193 B8m Washer

Polished ASME SA 193 B8m Washer

ASTM A193 Grade B8m Ring Washers

ASTM A193 Grade B8m Ring Washers

A193 Grade B8m Hex Bolt Dimensions Metric

A193 Grade B8m Hex Bolt Dimensions Metric

Hexagon Head Bolt Metric Coarse DIN 931

D k nom k Max Min s max s min e nom e Max Min shank Max shank Min washer Max washer Min
M1.6 1.1000 1.2250 0.9750 3.2000 3.0800 3.4100 3.7000 3.4800 1.6000 1.4600 - -
M2 1.4000 1.5250 1.2750 4.0000 3.8800 4.3200 4.6000 4.3800 2.0000 1.8600 - -
M2.5 1.7000 1.8250 1.5750 5.0000 4.8800 5.4500 5.8000 5.5100 2.5000 2.2300 - -
M3 2.0000 2.1250 1.8750 5.5000 5.3800 6.0100 6.4000 6.0800 3.0000 2.8600 5.0800 4.8300
M3.5 2.4000     6.0000   6.5800            
M4 2.8000 2.9250 2.6750 7.0000 6.8500 7.6600 8.1000 7.7400 4.0000 3.8200 6.5500 6.3000
M5 3.5000 3.6500 3.3500 8.0000 7.8500 8.7900 9.2000 8.8700 5.0000 4.8200 7.5500 7.3000
M6 4.0000 4.1500 3.8500 10.0000 9.7800 11.0500 11.5000 11.0500 6.0000 5.8200 9.4800 9.2300
M7 4.8000     11.0000   12.1200            
M8 5.3000 5.6500 5.3500 13.0000 12.7300 14.3800 15.0000 14.3800 8.0000 7.7800 12.4300 12.1800
M10 6.4000 7.1800 6.8200 17.0000 16.7300 18.9000 19.6000 18.9000 10.0000 9.7800 16.4300 16.1800
M12 7.5000 8.1800 7.8200 19.0000 18.6700 21.1000 21.9000 21.1000 12.0000 11.7300 18.3700 18.1200
M14 8.8000 9.1800 8.8200 22.0000 21.6700 24.4900 25.4000 24.4900 14.0000 13.7300 21.3700 21.1200
M16 10.0000 10.1800 9.8200 24.0000 23.6700 26.7500 27.7000 26.7500 16.0000 15.7300 23.2700 23.0200
M18 11.5000 12.2150 11.7850 27.0000 26.6700 30.1400 31.2000 30.1400 18.0000 17.7300 26.2700 26.0200
M20 12.5000 13.2150 12.7850 30.0000 29.6700 33.5300 34.6000 33.5300 20.0000 19.6700 29.2700 28.8000
M22 14.0000 14.2150 13.7850 32.0000 31.6100 35.7200 36.9000 35.7200 22.0000 21.6700 31.2100 30.7400
M24 15.0000 15.2150 14.7850 36.0000 35.3800 39.9800 41.6000 39.9800 24.0000 23.6700 34.9800 34.5100
M27 17.0000 17.2150 16.7850 41.0000 40.3800 45.2000 47.3000 45.6300 27.0000 26.6700 39.9800 39.3600
M30 18.7000 19.2600 18.7400 46.0000 45.3800 50.8500 53.1000 51.2800 30.0000 29.6700 44.9800 44.3600
M33 21.0000 21.2600 20.7400 50.0000 49.3800 55.3700 57.7000 55.8000 33.0000 32.6100 48.9800 48.3600
M36 22.5000 23.2600 22.7400 55.0000 54.2600 60.7900 63.5000 61.3100 36.0000 35.6100 53.8600 53.2400
M39 25.0000 25.2600 24.7400 60.0000 59.2600 66.4000 69.3000 66.9600 39.0000 38.6100 58.8600 58.2400
M42 26.0000 26.2600 25.7400 65.0000 64.2600 71.3000 75.1000 72.6100 42.0000 41.6100 63.7600 63.0400
M45 28.0000 28.2600 27.7400 70.0000 69.2600 76.9500 80.8000 78.2600 45.0000 44.6100 68.7600 68.0400
M48 30.0000 30.2600 29.7400 75.0000 74.2600 82.6000 86.6000 83.9100 48.0000 47.6100 73.7600 73.0400
M52 33.0000 33.2100 32.6900 80.0000 79.2600 88.3000 92.4000 89.5600 52.0000 51.5400 - -
M56 35.0000 35.3100 34.6900 85.0000 84.1300 93.6300 98.1000 95.0700 56.0000 55.5400 - -
M60 38.0000 38.3100 37.6900 90.0000 89.1300 99.3500 103.9000 100.7200 60.0000 59.5400 - -
M64 40.0000 40.3100 39.6900 95.0000 94.1300 104.9800 109.7000 106.3700 64.0000 63.5400 - -
M68 43.0000 43.3100 42.6900 100.0000 99.1300 110.5000 115.5000 112.0200 68.0000 67.5400 - -
M72 45.0000     105.0000 102.8000 116.0300       71.2600    
M76 48.0000     110.0000 107.8000 121.5500       75.2600    
M80 50.0000     115.0000   127.3000       79.2600    
M90 57.0000     130.0000   144.0000       89.1300    
M100 63.0000     145.0000   161.0000       99.1300    
M110 69.0000     155.0000   171.2800       109.1300    
M125 79.0000     180.0000   198.9000       124.0000    
M140 88.0000     200.0000   221.0000       139.0000    
M160 100.0000     230.0000   254.1500       159.0000    
ASME SA 193 Grade B8m Cl2 Stud Bolt Metric Dimensions

ASME SA 193 Grade B8m Cl2 Stud Bolt Metric Dimensions

Engineers Stud Metal End =2.1/2 D Sk6 Metric Coarse DIN 940

d b c l<125 c l<125<200 c l 200>
M3 7.5000 12.0000 18.0000  
M4 10.0000 14.0000 20.0000  
M5 12.5000 16.0000 22.0000  
M6 15.0000 18.0000 24.0000 37.0000
M7 17.5000 20.0000 26.0000 39.0000
M8 20.0000 22.0000 28.0000 41.0000
M10 25.0000 26.0000 32.0000 45.0000
M12 30.0000 30.0000 36.0000 49.0000
M14 35.0000 34.0000 40.0000 53.0000
M16 40.0000 38.0000 44.0000 57.0000
M18 45.0000 42.0000 48.0000 61.0000
M20 50.0000 46.0000 52.0000 65.0000
M22 55.0000 50.0000 56.0000 69.0000
M24 60.0000 54.0000 60.0000 73.0000
M27 67.5000 60.0000 66.0000 79.0000
M30 75.0000 66.0000 72.0000 85.0000
M33 82.5000 72.0000 78.0000 91.0000
M36 90.0000 78.0000 84.0000 97.0000
ASTM A193 Grade B8m Cl2 Hex Nut Dimensions Metric

ASTM A193 Grade B8m Cl2 Hex Nut Dimensions Metric

Hexagon Heavy Nut UNF B18.2.2

D D s s max s min e max e min m m max m min
1/4" 0.2500 1/2" 0.5000 0.4880 0.5770 0.5560 15/64" 0.2500 0.2180
5/16" 0.3125 9/16" 0.5620 0.5460 0.6500 0.6220 19/64" 0.3140 0.2800
3/8" 0.3750 11/16" 0.6880 0.6690 0.7940 0.7630 23/64" 0.3770 0.3410
7/16" 0.4375 3/4" 0.7500 0.7280 0.8660 0.8300 27/64" 0.4410 0.4030
1/2" 0.5000 7/8" 0.8750 0.8500 1.0100 0.9690 31/64" 0.5040 0.4640
9/16" 0.5625 15/16" 0.9380 0.9090 1.0830 1.0370 35/64" 0.5680 0.5260
5/8" 0.6250 1.1/16" 1.0620 1.0310 1.2270 1.1750 39/64" 0.6310 0.5870
3/4" 0.7500 1.1/4" 1.2500 1.2120 1.4430 1.3820 47/64" 0.7580 0.7100
7/8" 0.8750 1.7/16" 1.4380 1.3940 1.6600 1.5890 55/64" 0.8850 0.8330
1" 1.0000 1.5/8" 1.6250 1.5750 1.8760 1.7960 63/64" 1.0120 0.9560
1.1/8" 1.1250 1.13/16" 1.8120 1.7560 2.0930 2.0020 1.7/64" 1.1390 1.0790
1.1/4" 1.2500 2" 2.0000 1.9380 2.3090 2.2090 1.7/32" 1.2510 1.1870
1.3/8" 1.3750 2.3/16" 2.1880 2.1190 2.5260 2.4160 1.11/32" 1.3780 1.3100
1.1/2" 1.5000 2.3/8" 2.3750 2.3000 2.7420 2.6220 1.15/32" 1.5050 1.4330
1.5/8" 1.6250 2.9/16" 2.5620 2.4810 2.9590 2.8280 1.19/32" 1.6320 1.5560
1.3/4" 1.7500 2.3/4" 2.7500 2.6620 3.1750 3.0350 1.23/32" 1.7590 1.6790
1.7/8" 1.8750 2.15/16" 2.9380 2.8440 3.3920 3.2420 1.27/32" 1.8860 1.8020
2" 2.0000 3.1/8" 3.1250 3.0250 3.6080 3.4490 1.31/32" 2.0130 1.9250
2.1/4" 2.2500 3.1/2" 3.5000 3.3880 4.0410 3.8620 2.13/64" 2.2510 2.1550
2.1/2" 2.5000 3.7/8" 3.8750 3.7500 4.4740 4.2750 2.29/64" 2.5050 2.4010
2.3/4" 2.7500 4.1/4" 4.2500 4.1120 4.9070 4.6880 2.45/64" 2.7590 2.6470
3" 3.0000 4.5/8" 4.6250 4.4750 5.3400 5.1020 2.61/64" 3.0130 2.8930
3.1/4" 3.2500 5" 5.0000 4.8380 5.7740 5.5150 3.3/16" 3.2520 3.1240
3.1/5" 3.5000 5.3/8" 5.3750 5.2000 6.2070 5.9280 3.7/16" 3.5060 3.3700
3.3/4" 3.7500 5.3/4" 5.7500 5.5620 6.6400 6.3410 3.11/16" 3.7600 3.6160
4" 4.0000 6.1/8" 6.1250 5.9250 7.0730 6.7550 3.15/16" 4.0140 3.8620
A193 B8m Washer Dimensions

A193 B8m Washer Dimensions

Flat Washer Wide Metric American B18.22M

D d1 Max d1 Min d2 Max d2 Min h Max h Min
M1.6 2.0900 1.9500 6.0000 5.7000 0.9000 0.6000
M2 2.6400 2.5000 8.0000 7.6400 0.9000 0.6000
M2.5 3.1400 3.0000 10.0000 9.6400 1.2000 0.8000
M3 3.6800 3.5000 12.0000 11.5700 1.4000 1.0000
M3.5 4.1800 4.0000 15.0000 14.5700 1.7500 1.2000
M4 4.8800 4.7000 16.0000 15.5700 2.3000 1.6000
M5 5.7800 5.5000 20.0000 19.4800 2.3000 1.6000
M6 6.8700 6.6500 25.4000 24.8800 2.3000 1.6000
M8 9.1200 8.9000 32.0000 31.3800 2.8000 2.0000
M10 11.1200 10.8500 39.0000 38.3800 3.5000 2.5000
M12 13.5700 13.3000 44.0000 43.3800 3.5000 2.5000
M14 15.5200 15.2500 50.0000 49.3800 4.0000 3.0000
M16 17.5200 17.2500 56.0000 54.8000 4.8000 3.5000
M20 22.3200 21.8000 66.0000 64.8000 5.1000 4.0000
M24 26.1200 25.6000 72.0000 70.8000 5.6000 4.5000
M30 33.0200 32.4000 90.0000 88.6000 6.4000 5.0000
M36 38.9200 38.3000 110.0000 108.6000 8.5000 7.0000
ASTM A193 Grade B8M Bolts Torque Chart
BOLT DIAMETER Torque FT-LBS
Initial Torque 30% Torque 70% Final Torque 100%
1/2163652
9/16235375
5/83173104
3/455129184
7/871166237
1107249356
1.1/8127297424
1.1/4179417596
1.3/8186435622
1.1/2246574821
1.9/16168392560
1.5/8191445636
1.3/4240561801
1.7/8298696994
23668531219
2.1/452912341762
2.1/273317092442
2.3/498623003285
3128930084297

BOLT DIAMETER Torque FT-LBS
Initial Torque 30% Torque 70% Final Torque 100%
1/2224971
9/163172102
5/84299141
3/475175249
7/896225321
1145338483
1.1/8172403575
1.1/4243565808
1.3/8252590843
1.1/23347781113
1.9/16228531759
1.5/8259603862
1.3/43257611086
1.7/84049441348
249611571653
2.1/471716732389
2.1/299423173311
2.3/4133731184454
3174840785826
ASME SA 193 B8m Fasteners Chemical Composition
Element B8M BOLTS (AISI 316)
Carbon 0.08% maximum
Manganese 2.00% maximum
Chromium 16.0 – 18.0%
Nickel 10.0 – 14.0%
Phosphorus, maximum 0.045%
Sulfur, maximum 0.030%
Silicon 1.00% max
Molybdenum 2.00 – 3.00%
ASTM A193 Grade B8m Bolts Mechanical Properties
Grade Sizes Tensile Stress ksi, min Yield Stress, ksi, min Elong, %, min RA % min HBW HRC
B8M Class 1 Bolts All 75 30 30 50 223 max 96 max
B8M Class 2 Bolts Up to 3/4 110 95 15 45 321 max 35 max
7/8 - 1 100 80 20 45
1-1/8 - 1-1/4 95 65 25 45
1-3/8 - 1-1/2 90 50 30 45
A193 B8m Class 1 Nut Bolt Equivalent Grade

Class 2 Stainless steel, AISI 316

A193 B8M Fasteners Temperature Range
SPECIFICATION GRADE Degree F (deg C)
    650 700 750 800 850 900 950 1000 1050 1100
    343 371 399 427 454 482 510 538 566 593
ASTM A193 B6 21.2 21.2 21.2 19.5 15.6 12        
ASTM A193 B7(*)                    
ASTM A193 B7M 25 25 23.6 21 17 12.5 8.5 4.5    
ASTM A193 (*) 20 20 20 18.5 16.2 12.5 8.5 4.5    
ASTM A193 B8-CL1 11.2 11 10.8 10.5 10.3 10.1 9.9      
ASTM A193 B8-CL2 25                  
ASTM A193 (* *) 25 25 25 25 23.5 20.5 16 11 6.3 2.8
ASTM A193 B16                    
ASTM A320 L7 25 25                
BS B17B 20 19.8 19.8 19.8 19.7 19.7 19.6 19.4 19.3 16.6
ASTM 453 660 20.2 20.1 20 19.9 19.9 19.9 19.8 19.8    

 

  • (*) FOR BOLT DIA < 2 1/2"
  • (**) FOR BOLT DIA < 3/4"
  • PLEASE NOTE THESE VALUES ARE FOR REFERENCE PURPOSES ONLY. VALUES SHOULD BE EXTRACTED FROM ASME OR BS 5500.