The specification for standard A193 B8 Material covers threaded fasteners like A193 Gr B8 bolts and nuts, studs are manufactured from AISI 304 stainless steel. Austenitic grade 304 stainless steel is one of the most commonly used grades in the fastener industry. The A193 Gr B8 Bolts applications of the can be seen especially in heavy industrial piping systems.
The A193 B8 Material is widely used not only in the form of both studs and bolts, and also is common used as ferry bolts (12 points), socket heads and several other type of specialty fasteners. Apart from these fasteners, B8 double ends & tap ends are extremely common in heavy industrial equipment.
The ASTM A193 grade b8 bolts manufactured in 304 grade stainless steel is usually solution treated with carbide on the bars to be threaded or after the heading operation for bolts with forged heads. Carbide solution treatment, otherwise also known as solution annealing, is a process in which stainless steel fasteners like the A193 B8 Socket Head Cap Screw or bars are heated followed by quenching with water. Quenching the A193 B8 Washer with water after solution annealing assures maximum corrosion resistance.
In order to achieve increased strength characteristics as well as reduce the potential for galling, the Hex Bolt A193 B8 are strain hardened after carbide solution treatment.
Class 1 also referred to as standard A193 B8 Bolts
Class 2 also referred to as hardened. The A193 B8 Studs Class 2 material is specified for applications where there is a demand for a stronger metal is required. Some common examples of the A193 B8 Studs Class 2 include non-metal flanges, for example, the FRP flanges, CPVC and PVC flanges, as well as other soft non-metal flanges. Additionally, Class 2 material is known to be more resistant to galling, thus, gaining wide acceptance amongst many industries such as chemical processing and waste water management.
SA 193 B8 Fasteners
ASTM A193 Grade B8 Bolts
SA 193 Grade B8 Threaded Rod and Studs
ASTM A193 B8 Hex Bolt
A193 Gr B8 Stud Bolt
ASTM A193 B8 Stainless Steel Nuts
BSW | 1/2" | 3/4" | 1" | 1.1/4" | 1.1/2" | 2' | 2.1/2" | 3" | 3.1/2" | 4" | 5" | 6" | 7" | 8" |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1/8" | 273 | 294 | 316 | 539 | 670 | 749 | - | - | - | - | - | - | - | - |
3/16" | 297 | 343 | 389 | 468 | 606 | 753 | 1100 | 1322 | - | - | - | - | - | - |
1/4" | 571 | 655 | 757 | 859 | 971 | 1179 | 1513 | 1753 | 1903 | 2161 | - | - | - | - |
5/16" | 1012 | 1152 | 1322 | 1488 | 1661 | 1989 | 2335 | 2682 | 3154 | 3699 | 4490 | - | - | - |
3/8" | 1575 | 1791 | 2025 | 2277 | 2529 | 3025 | 3518 | 4018 | 4507 | 5010 | 6638 | 8050 | - | - |
7/16" | - | - | 3715 | 4120 | 4476 | 5208 | 5984 | 6762 | 7524 | 8255 | 9871 | 11321 | - | - |
1/2" | - | - | 4272 | 4738 | 5147 | 5989 | 6881 | 7776 | 8652 | 9493 | 11351 | 13019 | 19080 | 22976 |
5/8" | - | - | 7926 | 8094 | 8748 | 10186 | 11412 | 13450 | 14107 | 15385 | 19158 | 22065 | 27251 | 30798 |
3/4" | - | - | - | - | 16622 | 18333 | 20564 | 22822 | 25059 | 27399 | 36079 | 41233 | - | - |
7/8" | - | - | - | - | - | 28056 | 32298 | 35882 | 39727 | 43608 | 51212 | 59055 | 66363 | 71246 |
1" | - | - | - | - | - | 39442 | 44327 | 49161 | 53931 | 59901 | 69450 | 79667 | 89902 | 100126 |
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SA 193 B8 Bolts material specification | AISI Type 304 |
ASTM A193 Grade B8 Hex Bolts Size Metric |
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SA 193 Grade B8 Hex Bolts Size Inch |
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ASTM A193 B8 Eye Bolts Metric Size |
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A193 Gr B8 Stud Bolt Metric Size |
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ASTM A193 B8 Stainless Steel Stud Bolt Inch |
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A193 Grade B8 Hex Nut (DIA) |
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ASME SA 193 Grade B8 Plain Washer (DIA) |
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ASTM A193 Grade B8 Bolts International Standard | IS, ANSI, ASTM DIN, ISO, JIS, GB, ASME, BS, UNI |
A193 B8 Bolts Standard Sizes | M10, M4, M16, M36 M2.5, M6, M30, M12, M8, M14, M2, M3, M20, M24, M5 to M160 |
ASME SA 193 B8 Fasteners Threads | BSF, UNF METRIC, UNC, UNEF, BSW or as required |
ASME/ ANSI - American Standard ASTM A193 Grade B8 Bolts |
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DIN German Standard ASTM A193 Grade B8 Bolts | DIN 933, DIN 931, DIN 970, DIN 934 |
ISO Standard ASTM A193 gr B8 Bolts | ISO 4033, : ISO 4032, JIS standards |
A193 B8 Stainless Steel Bolts / Screws Head Drive | Phillips, Slotted, Phillips/Slot, Six-Lobe |
MTC (Manufacturer Test Certificate) | EN 10204 / 3.1 |
ASME SA 193 Gr B8 Nut Bolt Finishing |
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SA 193 Gr B8 Fasteners Production Process |
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ASTM A193 Grade B8 Bolts Coating |
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ASTM A193 Grade B8 Stainless Steel Fasteners Packing | Wooden Pallet, Canton, Carton / Small Box or as required |
SA 193 B8 Flange Bolts
ASTM A193 Grade B8 Heavy Hex Bolts
SA 193 Grade B8 Hex Bolts
ASTM A193 B8 Square Bolts
A193 Gr B8 U Bolts
ASTM A193 B8 Stainless Steel Eye Bolts
SA 193 B8 Lag Bolts
ASTM A193 Grade B8 Anchor Bolts
SA 193 Grade B8 Hex Head Bolts
ASTM A193 B8 Carriage Bolts
A193 Gr B8 Allen Cap Bolt
ASTM A193 B8 Stainless Steel Countersunk Bolts
SA 193 B8 Eye Nuts
ASTM A193 Grade B8 Heavy Hex Nuts
SA 193 Grade B8 Hex Nuts
ASTM A193 B8 Jam Nuts
A193 Gr B8 Lock Nuts
ASTM A193 B8 Stainless Steel Panel Nuts
A193 Grade B8 Square Nuts
ASME SA 193 Grade B8 T-Nuts For Wood
A193 B8 Wheel Nuts and Caps
ASME SA 193 B8 Wing Nuts
ASTM A193 gr B8 Cage Nuts and Spring Nuts
A193 B8 Stainless Steel Self Locking Nuts
ASME SA 193 Gr B8 Tek Screws
SA 193 Gr B8 Deck Screws
ASTM A193 Grade B8 Stainless Steel Concrete Screws
A193 Grade B8 Stainless Steel Socket Head Cap Screw
SA 193 B8 Eye Screw
ASTM A193 Grade B8 Thumb Screw
SA 193 Grade B8 Wood Screw
ASTM A193 B8 Coach Screw
A193 Gr B8 Hex Head Lag Screw
ASTM A193 B8 Stainless Steel 12-Point Flange Head Cap Screws
A193 Grade B8 Wing Screw
ASME SA 193 Grade B8 Captive Panel Screws
A193 B8 Hex Cap Screw
ASME SA 193 B8 Allen Cap Screw
ASTM A193 gr B8 Grub Screw
A193 B8 Stainless Steel Fully Threaded Screw
ASME SA 193 Gr B8 Torx Screw
SA 193 Gr B8 Pan Head Screw
ASTM A193 Grade B8 Stainless Steel Truss Head Screw
A193 Grade B8 Stainless Steel Flat Head Screw
SA 193 B8 Stud Bolts
ASTM A193 Grade B8 Double Ended Studs
SA 193 Grade B8 Tie Rod
ASTM A193 B8 Fully Threaded Studs
A193 Gr B8 Threaded Rod
ASTM A193 B8 Stainless Steel Unc Stud Bolt
SA 193 B8 Cup Washer
ASTM A193 Grade B8 Square Washer
SA 193 Grade B8 Lock Washer
ASTM A193 B8 Countersunk Washer
A193 Gr B8 Belleville Washer
ASTM A193 B8 Stainless Steel Shim Washer
A193 Grade B8 Square Plate Washer
ASME SA 193 Grade B8 Square Washer
A193 B8 Penny Washer
ASME SA 193 B8 Machine Washers
Polished ASTM A193 gr B8 Washer
A193 B8 Stainless Steel Ring Washers
d | k | e | s |
---|---|---|---|
M6 (0.75p) | 4.0000 | 11.0500 | 10.0000 |
M8 (1.00p) | 5.3000 | 14.3800 | 13.0000 |
M10 (1.00p) | 6.4000 | 18.9000 | 17.0000 |
M10 (1.25P) | 6.4000 | 18.9000 | 17.0000 |
M12 (1.25p) | 7.5000 | 21.1000 | 19.0000 |
M12 (1.50p) | 7.5000 | 21.1000 | 19.0000 |
M14 (1.5p) | 8.8000 | 24.4900 | 22.0000 |
M16 (1.5p) | 10.0000 | 26.7500 | 24.0000 |
M18 (1.5P) | 11.5000 | 27.0000 | |
M20 (1.5P) | 12.5000 | 30.0000 | |
M24 (2.0P) | 15.0000 | 36.0000 | |
M27 (2.00P) | 17.0000 | 41.0000 |
d | b | c l<125 | c l<125<200 | c l 200> |
---|---|---|---|---|
M4 | 8.0000 | 14.0000 | 20.0000 | |
M5 | 10.0000 | 16.0000 | 22.0000 | |
M6 | 12.0000 | 18.0000 | 24.0000 | |
M7 | 14.0000 | 20.0000 | 26.0000 | |
M8 | 16.0000 | 22.0000 | 28.0000 | |
M10 | 20.0000 | 26.0000 | 32.0000 | 45.0000 |
M12 | 24.0000 | 30.0000 | 36.0000 | 49.0000 |
M14 | 28.0000 | 34.0000 | 40.0000 | 53.0000 |
M16 | 32.0000 | 38.0000 | 44.0000 | 57.0000 |
M18 | 36.0000 | 42.0000 | 48.0000 | 61.0000 |
M20 | 40.0000 | 46.0000 | 52.0000 | 65.0000 |
M22 | 44.0000 | 50.0000 | 56.0000 | 69.0000 |
M24 | 48.0000 | 54.0000 | 60.0000 | 73.0000 |
d | e | s max | s min | m max | m min |
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1/4" | 0.5100 | 0.4450 | 0.4380 | 0.2000 | 0.1900 |
5/16" | 0.6100 | 0.5250 | 0.5180 | 0.2500 | 0.2400 |
3/8" | 0.6900 | 0.6000 | 0.5920 | 0.3120 | 0.3020 |
7/16" | 0.8200 | 0.7100 | 0.7020 | 0.3750 | 0.3650 |
1/2" | 0.9500 | 0.8200 | 0.8120 | 0.4370 | 0.4270 |
9/16" | 1.0600 | 0.9200 | 0.9120 | 0.5000 | 0.4900 |
5/8" | 1.1700 | 1.0100 | 1.0000 | 0.5620 | 0.5520 |
3/4" | 1.3900 | 1.2000 | 1.1900 | 0.6870 | 0.6770 |
7/8" | 1.5000 | 1.3000 | 1.2880 | 0.7500 | 0.7400 |
1" | 1.7100 | 1.4800 | 1.4680 | 0.8750 | 0.8650 |
1.1/8" | 1.9300 | 1.6700 | 1.6400 | 1.0000 | 0.9900 |
1.1/4" | 2.1500 | 1.8600 | 1.8150 | 1.1250 | 1.1050 |
1.3/8" | 2.3700 | 2.0500 | 2.0050 | 1.2500 | 1.2300 |
1.1/2" | 2.5600 | 2.2200 | 2.1750 | 1.3750 | 1.3550 |
1.3/4" | 2.9800 | 2.5800 | 2.5200 | 1.6250 | 1.6050 |
2" | 3.1900 | 2.7600 | 2.7000 | 1.7500 | 1.7300 |
D | d1 | d2 | d3 |
---|---|---|---|
M1.0 | 1.1000 | 2.5000 | - |
M1.2 | 1.3000 | 3.0000 | - |
M1.4 | 1.5000 | 3.0000 | - |
M1.6 | 1.7000 | 4.0000 | - |
M2 | 2.2000 | 5.0000 | - |
M2.2 | 2.4000 | 5.0000 | - |
M2.5 | 2.7000 | 6.5000 | - |
M3 | 3.6200 | 7.0000 | - |
M3.5 | 3.7000 | 7.0000 | - |
M4 | 4.3000 | 9.0000 | - |
M4.5 | 4.8000 | 9.0000 | - |
M5 | 5.3000 | 10.0000 | - |
M6 | 6.4000 | 12.5000 | 0.8000 |
M7 | 7.4000 | 14.0000 | 0.8000 |
M8 | 8.4000 | 17.0000 | 1.0000 |
M10 | 10.5000 | 21.0000 | 1.2500 |
M12 | 13.0000 | 24.0000 | 1.6000 |
M14 | 15.0000 | 28.0000 | 1.6000 |
M16 | 17.0000 | 30.0000 | 2.0000 |
M18 | 19.0000 | 34.0000 | 2.0000 |
M20 | 21.0000 | 37.0000 | 2.0000 |
M22 | 23.0000 | 39.0000 | 2.0000 |
M24 | 25.0000 | 44.0000 | 2.5000 |
M27 | 28.0000 | 50.0000 | 2.5000 |
M30 | 31.0000 | 56.0000 | 2.5000 |
M33 | 34.0000 | 60.0000 | 3.0000 |
M36 | 37.0000 | 66.0000 | 3.0000 |
M39 | 40.0000 | 72.0000 | 3.0000 |
BOLT SIZE | TORQUE FT-LBS | ||
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30% Initial Torque |
70% Torque |
100% Final Torque |
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1/2 | 16 | 36 | 52 |
9/16 | 23 | 53 | 75 |
5/8 | 31 | 73 | 104 |
3/4 | 55 | 129 | 184 |
7/8 | 71 | 166 | 237 |
1 | 107 | 249 | 356 |
1⅛ | 127 | 297 | 424 |
1¼ | 179 | 417 | 596 |
1⅜ | 186 | 435 | 622 |
1½ | 246 | 574 | 821 |
19/16 | 168 | 392 | 560 |
1⅝ | 191 | 445 | 636 |
1¾ | 240 | 561 | 801 |
1⅞ | 298 | 696 | 994 |
2 | 366 | 853 | 1219 |
2¼ | 529 | 1234 | 1762 |
2½ | 733 | 1709 | 2442 |
2¾ | 986 | 2300 | 3285 |
3 | 1289 | 3008 | 4297 |
BOLT SIZE | TORQUE NM | ||
---|---|---|---|
30% Initial Torque |
70% Torque |
100% Final Torque |
|
1/2 | 22 | 49 | 71 |
9/16 | 31 | 72 | 102 |
5/8 | 42 | 99 | 141 |
3/4 | 75 | 175 | 249 |
7/8 | 96 | 225 | 321 |
1 | 145 | 338 | 483 |
1⅛ | 172 | 403 | 575 |
1¼ | 243 | 565 | 808 |
1⅜ | 252 | 590 | 843 |
1½ | 334 | 778 | 1113 |
19/16 | 228 | 531 | 759 |
1⅝ | 259 | 603 | 862 |
1¾ | 325 | 761 | 1086 |
1⅞ | 404 | 944 | 1348 |
2 | 496 | 1157 | 1653 |
2¼ | 717 | 1673 | 2389 |
2½ | 994 | 2317 | 3311 |
2¾ | 1337 | 3118 | 4454 |
3 | 1748 | 4078 | 5826 |
ASTM | A193 Grade B8 | A193 Grade B8T |
Percentage | % | % |
C. | 0.08 max. | 0.08 max. |
Mn. | 2.00 max. | 2.00 max. |
Si. | 1.00 max. | 1.00 max. |
P. | 0.045 max. | 0.045 max. |
S. | 0.030 max. | 0.030 max. |
Cr. | 18.00---20.00 | 17.00---9.00 |
Ni. | 8.00---10.50 | 9.00---12.00 |
Mo. | - | - |
V. | - | - |
Ti. | - | 5xCMIN |
Brinell Hardness | 223 B.H.N. maximum | 223 B.H.N. maximum |
Impact Value | Not applicable | Not applicable |
Grade | Bolt Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min |
SA 193 B8 Class 1 | All | 75 | 30 | 30 | 50 |
SA 193 B8 Class 2 | Up to 3/4 | 125 | 100 | 12 | 35 |
7/8 - 1 | 115 | 80 | 15 | 35 | |
1-1/8 - 1-1/4 | 105 | 65 | 20 | 35 | |
1-3/8 - 1-1/2 | 100 | 50 | 28 | 45 |