AIS Torque Cal, Torque Chart and Bolting Pattern.pdf

Formula Conversion
Length Bolt Stress / Pressure
Inches mm ksi psi Mpa N/mm
2
kgf/cm
2
YIELD REF Fraction Decimal
(Mpa) (ksi) 1/16" 0.0625 1.59 1 1,000 6.895 6.895 10.197
4.6 240 35 All 1/8" 0.1250 3.18
5.6 300 44 All 3/16" 0.1875 4.76 Force
8.8 660 96 All 1/4" 0.2500 6.35 kN N kgf lbf
10.9 940 137 All 5/16" 0.3125 7.94
12.9 1100 160 All 3/8" 0.3750 9.53 1 1,000 102.04 224.72
Grade 1 248 36 Up to M39 1/4 thru 1-1/2 7/16" 0.4375 11.11
392 57 Up to M20 1/4 thru 3/4 1/2" 0.5000 12.70 Area
248 36 M24-M39 Over 3/4 thru 1-1/2 9/16" 0.5625 14.29 Inch
2
mm
2
633 92 Up to M27 1/4 thru 1 5/8" 0.6250 15.88
557 81 M30-M39 Over 1 thru 1-1/2 11/16" 0.6875 17.46 1 645.16
Grade 8 894 130 Up to M39 1/4 thru 1-1/2 3/4" 0.7500 19.05
L7M 550 80 UP TO M64 Up to 2-1⁄2" 13/16" 0.8125 20.64 Torque
L7 725 105 UP TO M64 Up to 2-1⁄2" 7/8" 0.8750 22.23 ft.lbs N.m kgf.m
725 105 UP TO M64 UP TO 2-1/2" 15/16" 0.9375 23.81
655 95 M66 - M100 2-5/8"" - 4" 1" 1.0000 25.40 1 1.356 0.138
515 75 M105-M180 4" - 7"
725 105 UP TO M64 UP TO 2"
655 95 M66 - M100 2-1/2" - 4" Temperature
586 85 M105-M180 4" - 7"
o
C
o
F
550 80 M100 and under Up to 4"
515 75 over M100 to M180 Over 4"-7" 1 33.8
B8 205 30 All
B8 Class 1 205 30 All
B8M 205 30 All
655 95 3/4 and under M20 and under
550 80 Over ¾ to 1, incl. Over M20 to M24, incl
450 65 Over 1 to 1-1/4, incl. Over M24 to M30, incl
345 50 Over 1-1/4 to 1-1/2, incl. Over M30 to M36, incl
690 100 3/4 and under M20 and under
550 80 Over ¾ to 1, incl. Over M20 to M24, incl
345 50 Over 1-1/4 to 1-1/2, incl. Over M30 to M36, incl
515 75 2 and under M48 and under
380 55 Over 2-1/2 to 3, incl. Over M64 to M72, incl
Reference:
https://www.portlandbolt.com/technical/specifications
https://boltport.com/datasheets
ASTM A193
B7
B16
B7M
B8 Class 2
B8 Class 2B
B8M Class 2
MINIMUM YIELD STRENGTH
STANDARD OR GRADE
ASTM A320
ISO R898
SAE J429
Grade 5
Grade 2

TORQUE GUIDE FOR ISO R898 GRADE 8.8
MINIMUM YIELD (ksi) 96
BOLT LOAD BASED ON 50 PERCENT YIELD
SOCKET STRESS BOLT MOLYKOTE® MOLYKOTE® MOLYKOTE® MOLYKOTE® MOLYKOTE® MOLYKOTE® Rocol Machine Dry
HEAD AREA STRESS 1000 HSC Plus Paste D Paste P-1900 FM Anti-Seize P-74 Paste P-37 Anti-Seize Anti-Seize Stainless Oil New Clean Bolt
SCREW IN
2
ksi ut = 0.13 ut = 0.14 ut = 0.10 ut = 0.10 ut = 0.14 ut = 0.11 ut = 0.106 ut = 0.16 ut = 0.20
(IN) un = 0.08 un = 0.09 un = 0.10 un = 0.10 un = 0.08 un = 0.11 un = 0.106 un = 0.16 un = 0.20
1/2 x 13 3/8" 7/8" 0.1418 48 6,803 42 45 41 41 43 45 43 62 76
5/8 x 11 1/2" 1-1/16" 0.2259 48 10,835 82 89 81 81 85 88 85 121 149
3/4 x 10 5/8" 1-1/4" 0.3343 48 16,034 144 156 141 141 149 153 148 213 261
7/8 x 9 3/4" 1-7/16" 0.4615 48 22,136 230 249 225 225 238 245 237 341 418
1x 8 3/4" 1-5/8" 0.6054 48 29,040 343 372 336 336 356 365 353 509 624
1-1/8 x 8 7/8" 1-13/16" 0.7901 48 37,895 497 540 486 486 516 529 512 740 909
1-1/4 x 8 7/8" 2" 0.9992 48 47,927 691 751 675 675 719 735 711 1,032 1,270
1-3/8 x 8 1" 2-3/16" 1.2329 48 59,135 930 1,011 907 907 967 988 956 1,392 1,716
1-1/2 x 8 1" 2-3/8" 1.4911 48 71,520 1,219 1,325 1,187 1,187 1,268 1,294 1,251 1,828 2,255
1-5/8 x 8 - 2-9/16" 1.7738 48 85,082 1,561 1,699 1,519 1,519 1,624 1,657 1,602 2,345 2,896
1-3/4 x 8 1-1/4" 2-3/4" 2.0811 48 99,820 1,962 2,136 1,907 1,907 2,042 2,081 2,012 2,952 3,648
1-7/8 x 8 1-3/8" 2-15/16" 2.4129 48 115,735 2,426 2,642 2,357 2,357 2,526 2,573 2,487 3,655 4,520
2 x 8 1-5/8" 3-1/8" 2.7692 48 132,827 2,957 3,222 2,871 2,871 3,081 3,136 3,030 4,461 5,522
2-1/8 x 8 - 3-5/16" 3.1501 48 151,095 3,561 3,882 3,456 3,456 3,711 3,776 3,648 5,379 6,660
2-1/4 x 8 1-3/4" 3-1/2" 3.5555 48 170,540 4,243 4,626 4,115 4,115 4,421 4,498 4,345 6,413 7,945
2-3/8 x 8 - 3-11/16" 3.9854 48 191,161 5,005 5,459 4,852 4,852 5,217 5,306 5,124 7,573 9,386
2-1/2 x 8 1-7/8" 3-7/8" 4.4399 48 212,959 5,854 6,386 5,673 5,673 6,103 6,205 5,992 8,864 10,991
2-3/4 x 8 2" 4-1/4" 5.4224 48 260,086 7,829 8,544 7,581 7,581 8,165 8,296 8,010 11,870 14,729
3 x 8 2-1/4" 4-5/8" 6.5030 48 311,919 10,204 11,140 9,875 9,875 10,644 10,811 10,437 15,488 19,231
3-1/4 x 8 2-1/4" 5" 7.6818 48 368,458 13,017 14,214 12,590 12,590 13,581 13,788 13,309 19,776 24,566
3-1/2 x 8 - 5-3/8" 8.9587 48 429,704 16,303 17,807 15,762 15,762 17,013 17,266 16,665 24,789 30,807
3-3/4 x 8 2-1/4" 5-3/4" 10.3337 48 495,657 20,100 21,960 19,425 19,425 20,979 21,285 20,541 30,585 38,024
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(IN)
BOLT
LOAD
(lbf)
REQUIRED TORQUE (ft.lbs)
This spread sheet is to be used as a guide. all results should be analyzed against actual field results to establish their validity.
If 'µ' factor is not listed, Enter appropriate value under Custom (insert ut = coefficient of friction in thread, un = coeffieient of friction in nut) , in yellow field only
as always- after entering any value, hit enter to update calculations.
ASME B18.2.4.6M Metric Heavy Hex Nuts Bearing Diameter
Table calculation above base on Nonmandatory Appendix K (Nut Factor Calculation of Target Torque per ASME-PCC-1-2022
This calculation base on bolt material and lubricant only. Consult with gasket and joint manufacture for accurate information.
TORQUE BOLT CALCULATIONS (per ASME-PCC-1-2022 : Appendix K, Nut Factor Calculation)

SCREW IN2
1/2 x 13 3/8" 7/8" 0.1418 68 9,689 60 64 59 59 62 64 62 88 108
5/8 x 11 1/2" 1-1/16" 0.2259 68 15,431 117 127 115 115 121 125 121 173 212
3/4 x 10 5/8" 1-1/4" 0.3343 68 22,837 205 222 201 201 212 218 211 304 372
7/8 x 9 3/4" 1-7/16" 0.4615 68 31,527 327 355 321 321 339 348 337 485 595
1x 8 3/4" 1-5/8" 0.6054 68 41,360 489 530 479 479 507 520 503 725 889
1-1/8 x 8 7/8" 1-13/16" 0.7901 68 53,972 708 768 693 693 735 753 729 1,054 1,295
1-1/4 x 8 7/8" 2" 0.9992 68 68,259 985 1,070 962 962 1,023 1,046 1,012 1,470 1,809
1-3/8 x 8 1" 2-3/16" 1.2329 68 84,223 1,325 1,440 1,292 1,292 1,378 1,407 1,361 1,983 2,444
1-1/2 x 8 1" 2-3/8" 1.4911 68 101,862 1,736 1,888 1,691 1,691 1,806 1,843 1,782 2,603 3,211
1-5/8 x 8 - 2-9/16" 1.7738 68 121,177 2,223 2,419 2,163 2,163 2,314 2,359 2,281 3,340 4,125
1-3/4 x 8 1-1/4" 2-3/4" 2.0811 68 142,168 2,794 3,042 2,716 2,716 2,909 2,964 2,865 4,204 5,196
1-7/8 x 8 1-3/8" 2-15/16" 2.4129 68 164,835 3,455 3,763 3,356 3,356 3,598 3,665 3,541 5,206 6,438
2 x 8 1-5/8" 3-1/8" 2.7692 68 189,177 4,212 4,589 4,090 4,090 4,387 4,467 4,316 6,354 7,864
2-1/8 x 8 - 3-5/16" 3.1501 68 215,196 5,072 5,529 4,922 4,922 5,285 5,379 5,196 7,660 9,486
2-1/4 x 8 1-3/4" 3-1/2" 3.5555 68 242,890 6,042 6,588 5,861 5,861 6,297 6,406 6,188 9,134 11,316
2-3/8 x 8 - 3-11/16" 3.9854 68 272,260 7,129 7,774 6,911 6,911 7,431 7,557 7,298 10,785 13,368
2-1/2 x 8 1-7/8" 3-7/8" 4.4399 68 303,306 8,338 9,095 8,080 8,080 8,692 8,837 8,534 12,624 15,654
2-3/4 x 8 2" 4-1/4" 5.4224 68 370,425 11,151 12,169 10,798 10,798 11,628 11,816 11,408 16,906 20,978
3 x 8 2-1/4" 4-5/8" 6.5030 68 444,248 14,534 15,866 14,065 14,065 15,160 15,397 14,864 22,059 27,389
3-1/4 x 8 2-1/4" 5" 7.6818 68 524,774 18,539 20,245 17,932 17,932 19,343 19,637 18,955 28,166 34,989
3-1/2 x 8 - 5-3/8" 8.9587 68 612,003 23,219 25,362 22,449 22,449 24,231 24,591 23,734 35,306 43,877
3-3/4 x 8 2-1/4" 5-3/4" 10.3337 68 705,935 28,627 31,276 27,666 27,666 29,879 30,315 29,256 43,560 54,156
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(IN)
BOLT
LOAD
(lbf)

SCREW IN
2
1/2 x 13 3/8" 7/8" 0.1418 80 11,338 70 75 69 69 72 74 72 103 126
5/8 x 11 1/2" 1-1/16" 0.2259 80 18,058 137 148 135 135 142 146 142 202 248
3/4 x 10 5/8" 1-1/4" 0.3343 80 26,724 240 260 235 235 249 255 247 355 435
7/8 x 9 3/4" 1-7/16" 0.4615 80 36,893 383 415 376 376 397 408 395 568 696
1x 8 3/4" 1-5/8" 0.6054 80 48,400 572 620 560 560 593 608 589 848 1,040
1-1/8 x 8 7/8" 1-13/16" 0.7901 80 63,158 829 899 810 810 861 881 853 1,234 1,516
1-1/4 x 8 7/8" 2" 0.9992 80 79,878 1,152 1,252 1,125 1,125 1,198 1,224 1,185 1,720 2,117
1-3/8 x 8 1" 2-3/16" 1.2329 80 98,558 1,551 1,685 1,512 1,512 1,612 1,647 1,593 2,321 2,860
1-1/2 x 8 1" 2-3/8" 1.4911 80 119,200 2,031 2,209 1,978 1,978 2,113 2,156 2,085 3,046 3,758
1-5/8 x 8 - 2-9/16" 1.7738 80 141,803 2,602 2,831 2,532 2,532 2,707 2,761 2,669 3,909 4,827
1-3/4 x 8 1-1/4" 2-3/4" 2.0811 80 166,367 3,270 3,560 3,179 3,179 3,404 3,469 3,353 4,920 6,080
1-7/8 x 8 1-3/8" 2-15/16" 2.4129 80 192,892 4,043 4,403 3,928 3,928 4,210 4,288 4,144 6,092 7,534
2 x 8 1-5/8" 3-1/8" 2.7692 80 221,378 4,929 5,371 4,786 4,786 5,134 5,227 5,051 7,436 9,203
2-1/8 x 8 - 3-5/16" 3.1501 80 251,825 5,936 6,470 5,760 5,760 6,185 6,294 6,080 8,964 11,100
2-1/4 x 8 1-3/4" 3-1/2" 3.5555 80 284,233 7,071 7,709 6,858 6,858 7,369 7,497 7,241 10,689 13,242
2-3/8 x 8 - 3-11/16" 3.9854 80 318,602 8,342 9,098 8,087 8,087 8,695 8,843 8,541 12,621 15,644
2-1/2 x 8 1-7/8" 3-7/8" 4.4399 80 354,932 9,757 10,643 9,455 9,455 10,172 10,341 9,987 14,773 18,318
2-3/4 x 8 2" 4-1/4" 5.4224 80 433,476 13,049 14,240 12,636 12,636 13,608 13,827 13,350 19,783 24,549
3 x 8 2-1/4" 4-5/8" 6.5030 80 519,864 17,007 18,567 16,459 16,459 17,741 18,018 17,394 25,814 32,051
3-1/4 x 8 2-1/4" 5" 7.6818 80 614,097 21,694 23,690 20,984 20,984 22,635 22,980 22,181 32,960 40,944
3-1/2 x 8 - 5-3/8" 8.9587 80 716,174 27,172 29,679 26,270 26,270 28,355 28,777 27,774 41,315 51,346
3-3/4 x 8 2-1/4" 5-3/4" 10.3337 80 826,095 33,500 36,600 32,375 32,375 34,965 35,475 34,235 50,975 63,374
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(IN)
BOLT
LOAD
(lbf)

TORQUE GUIDE FOR ASTM SAE J429 GRADE 5
MINIMUM YIELD (ksi) 92 81
SCREW IN2
1/2 x 13 3/8" 7/8" 0.1418 46 6,524 40 43 40 40 42 43 42 59 72
5/8 x 11 1/2" 1-1/16" 0.2259 46 10,391 79 85 78 78 82 84 81 117 143
3/4 x 10 5/8" 1-1/4" 0.3343 46 15,377 138 149 135 135 143 147 142 204 250
7/8 x 9 3/4" 1-7/16" 0.4615 46 21,229 220 239 216 216 229 235 227 327 401
1x 8 3/4" 1-5/8" 0.6054 46 27,850 329 357 322 322 341 350 339 488 598
1-1/8 x 8 7/8" 1-13/16" 0.7901 41 31,997 420 456 411 411 436 446 432 625 768
1-1/4 x 8 7/8" 2" 0.9992 41 40,468 584 634 570 570 607 620 600 872 1,073
1-3/8 x 8 1" 2-3/16" 1.2329 41 49,931 786 854 766 766 817 834 807 1,176 1,449
1-1/2 x 8 1" 2-3/8" 1.4911 41 60,389 1,029 1,119 1,002 1,002 1,070 1,092 1,056 1,543 1,904
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(IN)
BOLT
LOAD
(lbf)

TORQUE GUIDE FOR ASTM SAE J429 GRADE 8
SCREW IN2
1/2 x 13 3/8" 7/8" 0.1418 65 9,219 57 61 56 56 59 61 59 84 102
5/8 x 11 1/2" 1-1/16" 0.2259 65 14,683 111 120 110 110 115 119 115 165 201
3/4 x 10 5/8" 1-1/4" 0.3343 65 21,729 195 211 191 191 202 208 201 289 354
7/8 x 9 3/4" 1-7/16" 0.4615 65 29,997 311 337 305 305 323 331 321 462 566
1x 8 3/4" 1-5/8" 0.6054 65 39,353 465 504 456 456 482 495 479 690 846
1-1/8 x 8 7/8" 1-13/16" 0.7901 65 51,353 674 731 659 659 700 716 693 1,003 1,232
1-1/4 x 8 7/8" 2" 0.9992 65 64,948 937 1,018 915 915 974 996 963 1,399 1,722
1-3/8 x 8 1" 2-3/16" 1.2329 65 80,137 1,261 1,370 1,229 1,229 1,311 1,339 1,295 1,887 2,325
1-1/2 x 8 1" 2-3/8" 1.4911 65 96,920 1,652 1,796 1,609 1,609 1,718 1,753 1,695 2,477 3,056
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(IN)
BOLT
LOAD
(lbf)

TORQUE GUIDE FOR ASTM A320 GRADE L7M
SCREW IN
2
1/2 x 13 3/8" 7/8" 0.1418 40 5,669 35 38 34 34 36 37 36 52 63
5/8 x 11 1/2" 1-1/16" 0.2259 40 9,029 68 74 67 67 71 73 71 101 124
3/4 x 10 5/8" 1-1/4" 0.3343 40 13,362 120 130 118 118 124 128 124 178 218
7/8 x 9 3/4" 1-7/16" 0.4615 40 18,447 191 208 188 188 199 204 197 284 348
1x 8 3/4" 1-5/8" 0.6054 40 24,200 286 310 280 280 297 304 295 424 520
1-1/8 x 8 7/8" 1-13/16" 0.7901 40 31,579 414 450 405 405 430 440 426 617 758
1-1/4 x 8 7/8" 2" 0.9992 40 39,939 576 626 563 563 599 612 592 860 1,059
1-3/8 x 8 1" 2-3/16" 1.2329 40 49,279 775 843 756 756 806 823 796 1,160 1,430
1-1/2 x 8 1" 2-3/8" 1.4911 40 59,600 1,016 1,105 989 989 1,056 1,078 1,043 1,523 1,879
1-5/8 x 8 - 2-9/16" 1.7738 40 70,901 1,301 1,416 1,266 1,266 1,354 1,381 1,335 1,954 2,413
1-3/4 x 8 1-1/4" 2-3/4" 2.0811 40 83,183 1,635 1,780 1,589 1,589 1,702 1,735 1,676 2,460 3,040
1-7/8 x 8 1-3/8" 2-15/16" 2.4129 40 96,446 2,021 2,202 1,964 1,964 2,105 2,144 2,072 3,046 3,767
2 x 8 1-5/8" 3-1/8" 2.7692 40 110,689 2,464 2,685 2,393 2,393 2,567 2,614 2,525 3,718 4,601
2-1/8 x 8 - 3-5/16" 3.1501 40 125,912 2,968 3,235 2,880 2,880 3,092 3,147 3,040 4,482 5,550
2-1/4 x 8 1-3/4" 3-1/2" 3.5555 40 142,116 3,535 3,855 3,429 3,429 3,684 3,748 3,621 5,344 6,621
2-3/8 x 8 - 3-11/16" 3.9854 40 159,301 4,171 4,549 4,044 4,044 4,348 4,421 4,270 6,311 7,822
2-1/2 x 8 1-7/8" 3-7/8" 4.4399 40 177,466 4,879 5,322 4,727 4,727 5,086 5,171 4,993 7,387 9,159
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(IN)
BOLT
LOAD
(lbf)

TORQUE GUIDE FOR ASTM A320 GRADE L7
SCREW IN
2
1/2 x 13 3/8" 7/8" 0.1418 53 7,473 46 50 45 45 48 49 48 68 83
5/8 x 11 1/2" 1-1/16" 0.2259 53 11,902 90 98 89 89 93 96 93 133 163
3/4 x 10 5/8" 1-1/4" 0.3343 53 17,613 158 171 155 155 164 168 163 234 287
7/8 x 9 3/4" 1-7/16" 0.4615 53 24,316 252 274 248 248 262 269 260 374 459
1x 8 3/4" 1-5/8" 0.6054 53 31,900 377 409 369 369 391 401 388 559 685
1-1/8 x 8 7/8" 1-13/16" 0.7901 53 41,627 546 593 534 534 567 581 562 813 999
1-1/4 x 8 7/8" 2" 0.9992 53 52,647 760 825 742 742 789 807 781 1,134 1,395
1-3/8 x 8 1" 2-3/16" 1.2329 53 64,959 1,022 1,111 997 997 1,063 1,085 1,050 1,530 1,885
1-1/2 x 8 1" 2-3/8" 1.4911 53 78,564 1,339 1,456 1,304 1,304 1,393 1,421 1,374 2,008 2,477
1-5/8 x 8 - 2-9/16" 1.7738 53 93,461 1,715 1,866 1,669 1,669 1,784 1,820 1,759 2,576 3,181
1-3/4 x 8 1-1/4" 2-3/4" 2.0811 53 109,651 2,155 2,346 2,095 2,095 2,243 2,286 2,210 3,243 4,008
1-7/8 x 8 1-3/8" 2-15/16" 2.4129 53 127,133 2,665 2,902 2,589 2,589 2,775 2,826 2,731 4,015 4,966
2 x 8 1-5/8" 3-1/8" 2.7692 53 145,908 3,249 3,540 3,154 3,154 3,384 3,445 3,329 4,901 6,065
2-1/8 x 8 - 3-5/16" 3.1501 53 165,975 3,912 4,264 3,796 3,796 4,076 4,148 4,008 5,908 7,316
2-1/4 x 8 1-3/4" 3-1/2" 3.5555 53 187,335 4,660 5,081 4,520 4,520 4,857 4,941 4,773 7,045 8,728
2-3/8 x 8 - 3-11/16" 3.9854 53 209,988 5,498 5,996 5,330 5,330 5,731 5,828 5,629 8,318 10,311
2-1/2 x 8 1-7/8" 3-7/8" 4.4399 53 233,933 6,431 7,015 6,232 6,232 6,704 6,816 6,582 9,737 12,074
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(IN)
BOLT
LOAD
(lbf)

TORQUE GUIDE FOR ASTM A193 GRADE B7, B16
SCREW IN2
1/2 x 13 3/8" 7/8" 0.1418 53 7,473 46 50 45 45 48 49 48 68 83
5/8 x 11 1/2" 1-1/16" 0.2259 53 11,902 90 98 89 89 93 96 93 133 163
3/4 x 10 5/8" 1-1/4" 0.3343 53 17,613 158 171 155 155 164 168 163 234 287
7/8 x 9 3/4" 1-7/16" 0.4615 53 24,316 252 274 248 248 262 269 260 374 459
1x 8 3/4" 1-5/8" 0.6054 53 31,900 377 409 369 369 391 401 388 559 685
1-1/8 x 8 7/8" 1-13/16" 0.7901 53 41,627 546 593 534 534 567 581 562 813 999
1-1/4 x 8 7/8" 2" 0.9992 53 52,647 760 825 742 742 789 807 781 1,134 1,395
1-3/8 x 8 1" 2-3/16" 1.2329 53 64,959 1,022 1,111 997 997 1,063 1,085 1,050 1,530 1,885
1-1/2 x 8 1" 2-3/8" 1.4911 53 78,564 1,339 1,456 1,304 1,304 1,393 1,421 1,374 2,008 2,477
1-5/8 x 8 - 2-9/16" 1.7738 53 93,461 1,715 1,866 1,669 1,669 1,784 1,820 1,759 2,576 3,181
1-3/4 x 8 1-1/4" 2-3/4" 2.0811 53 109,651 2,155 2,346 2,095 2,095 2,243 2,286 2,210 3,243 4,008
1-7/8 x 8 1-3/8" 2-15/16" 2.4129 53 127,133 2,665 2,902 2,589 2,589 2,775 2,826 2,731 4,015 4,966
2 x 8 1-5/8" 3-1/8" 2.7692 53 145,908 3,249 3,540 3,154 3,154 3,384 3,445 3,329 4,901 6,065
2-1/8 x 8 - 3-5/16" 3.1501 53 165,975 3,912 4,264 3,796 3,796 4,076 4,148 4,008 5,908 7,316
2-1/4 x 8 1-3/4" 3-1/2" 3.5555 53 187,335 4,660 5,081 4,520 4,520 4,857 4,941 4,773 7,045 8,728
2-3/8 x 8 - 3-11/16" 3.9854 53 209,988 5,498 5,996 5,330 5,330 5,731 5,828 5,629 8,318 10,311
2-1/2 x 8 1-7/8" 3-7/8" 4.4399 53 233,933 6,431 7,015 6,232 6,232 6,704 6,816 6,582 9,737 12,074
2-3/4 x 8 2" 4-1/4" 5.4224 48 258,115 7,770 8,479 7,524 7,524 8,103 8,233 7,949 11,780 14,618
3 x 8 2-1/4" 4-5/8" 6.5030 48 309,556 10,127 11,056 9,800 9,800 10,564 10,729 10,358 15,371 19,085
3-1/4 x 8 2-1/4" 5" 7.6818 48 365,667 12,918 14,107 12,495 12,495 13,478 13,683 13,208 19,626 24,380
3-1/2 x 8 - 5-3/8" 8.9587 48 426,449 16,179 17,673 15,642 15,642 16,884 17,136 16,538 24,601 30,574
3-3/4 x 8 2-1/4" 5-3/4" 10.3337 48 491,902 19,948 21,794 19,278 19,278 20,820 21,124 20,386 30,353 37,736
4 x 8 - 6-1/8" 11.8068 48 562,026 24,260 26,510 23,437 23,437 25,324 25,687 24,787 36,938 45,938
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(IN)
BOLT
LOAD
(lbf)

TORQUE GUIDE FOR ASTM A193 GRADE B7M
SCREW IN2
1/2 x 13 3/8" 7/8" 0.1418 40 5,669 35 38 34 34 36 37 36 52 63
5/8 x 11 1/2" 1-1/16" 0.2259 40 9,029 68 74 67 67 71 73 71 101 124
3/4 x 10 5/8" 1-1/4" 0.3343 40 13,362 120 130 118 118 124 128 124 178 218
7/8 x 9 3/4" 1-7/16" 0.4615 40 18,447 191 208 188 188 199 204 197 284 348
1x 8 3/4" 1-5/8" 0.6054 40 24,200 286 310 280 280 297 304 295 424 520
1-1/8 x 8 7/8" 1-13/16" 0.7901 40 31,579 414 450 405 405 430 440 426 617 758
1-1/4 x 8 7/8" 2" 0.9992 40 39,939 576 626 563 563 599 612 592 860 1,059
1-3/8 x 8 1" 2-3/16" 1.2329 40 49,279 775 843 756 756 806 823 796 1,160 1,430
1-1/2 x 8 1" 2-3/8" 1.4911 40 59,600 1,016 1,105 989 989 1,056 1,078 1,043 1,523 1,879
1-5/8 x 8 - 2-9/16" 1.7738 40 70,901 1,301 1,416 1,266 1,266 1,354 1,381 1,335 1,954 2,413
1-3/4 x 8 1-1/4" 2-3/4" 2.0811 40 83,183 1,635 1,780 1,589 1,589 1,702 1,735 1,676 2,460 3,040
1-7/8 x 8 1-3/8" 2-15/16" 2.4129 40 96,446 2,021 2,202 1,964 1,964 2,105 2,144 2,072 3,046 3,767
2 x 8 1-5/8" 3-1/8" 2.7692 40 110,689 2,464 2,685 2,393 2,393 2,567 2,614 2,525 3,718 4,601
2-1/8 x 8 - 3-5/16" 3.1501 40 125,912 2,968 3,235 2,880 2,880 3,092 3,147 3,040 4,482 5,550
2-1/4 x 8 1-3/4" 3-1/2" 3.5555 40 142,116 3,535 3,855 3,429 3,429 3,684 3,748 3,621 5,344 6,621
2-3/8 x 8 - 3-11/16" 3.9854 40 159,301 4,171 4,549 4,044 4,044 4,348 4,421 4,270 6,311 7,822
2-1/2 x 8 1-7/8" 3-7/8" 4.4399 40 177,466 4,879 5,322 4,727 4,727 5,086 5,171 4,993 7,387 9,159
2-3/4 x 8 2" 4-1/4" 5.4224 40 216,738 6,524 7,120 6,318 6,318 6,804 6,913 6,675 9,892 12,274
3 x 8 2-1/4" 4-5/8" 6.5030 40 259,932 8,504 9,283 8,229 8,229 8,870 9,009 8,697 12,907 16,026
3-1/4 x 8 2-1/4" 5" 7.6818 40 307,048 10,847 11,845 10,492 10,492 11,317 11,490 11,091 16,480 20,472
3-1/2 x 8 - 5-3/8" 8.9587 40 358,087 13,586 14,840 13,135 13,135 14,177 14,389 13,887 20,658 25,673
3-3/4 x 8 2-1/4" 5-3/4" 10.3337 40 413,047 16,750 18,300 16,188 16,188 17,482 17,738 17,118 25,487 31,687
4 x 8 - 6-1/8" 11.8068 40 471,930 20,371 22,260 19,680 19,680 21,265 21,569 20,814 31,016 38,574
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(IN)
BOLT
LOAD
(lbf)

TORQUE GUIDE FOR ASTM A193 GRADE B8, B8M, B8C,B8 Class 1,B8M Class 1
SCREW IN2
1/2 x 13 3/8" 7/8" 0.1418 15 2,113 13 14 13 13 13 14 13 19 23
5/8 x 11 1/2" 1-1/16" 0.2259 15 3,365 26 28 25 25 26 27 26 38 46
3/4 x 10 5/8" 1-1/4" 0.3343 15 4,980 45 48 44 44 46 48 46 66 81
7/8 x 9 3/4" 1-7/16" 0.4615 15 6,876 71 77 70 70 74 76 74 106 130
1x 8 3/4" 1-5/8" 0.6054 15 9,020 107 116 104 104 111 113 110 158 194
1-1/8 x 8 7/8" 1-13/16" 0.7901 15 11,770 154 168 151 151 160 164 159 230 282
1-1/4 x 8 7/8" 2" 0.9992 15 14,886 215 233 210 210 223 228 221 321 395
1-3/8 x 8 1" 2-3/16" 1.2329 15 18,368 289 314 282 282 300 307 297 433 533
1-1/2 x 8 1" 2-3/8" 1.4911 15 22,215 379 412 369 369 394 402 389 568 700
1-5/8 x 8 - 2-9/16" 1.7738 15 26,427 485 528 472 472 505 515 497 728 900
1-3/4 x 8 1-1/4" 2-3/4" 2.0811 15 31,005 609 663 592 592 634 647 625 917 1,133
1-7/8 x 8 1-3/8" 2-15/16" 2.4129 15 35,948 753 821 732 732 785 799 772 1,135 1,404
2 x 8 1-5/8" 3-1/8" 2.7692 15 41,257 919 1,001 892 892 957 974 941 1,386 1,715
2-1/8 x 8 - 3-5/16" 3.1501 15 46,931 1,106 1,206 1,073 1,073 1,153 1,173 1,133 1,671 2,069
2-1/4 x 8 1-3/4" 3-1/2" 3.5555 15 52,971 1,318 1,437 1,278 1,278 1,373 1,397 1,349 1,992 2,468
2-3/8 x 8 - 3-11/16" 3.9854 15 59,376 1,555 1,695 1,507 1,507 1,621 1,648 1,592 2,352 2,915
2-1/2 x 8 1-7/8" 3-7/8" 4.4399 15 66,147 1,818 1,984 1,762 1,762 1,896 1,927 1,861 2,753 3,414
2-3/4 x 8 2" 4-1/4" 5.4224 15 80,784 2,432 2,654 2,355 2,355 2,536 2,577 2,488 3,687 4,575
3 x 8 2-1/4" 4-5/8" 6.5030 15 96,884 3,170 3,460 3,067 3,067 3,306 3,358 3,242 4,811 5,973
3-1/4 x 8 2-1/4" 5" 7.6818 15 114,445 4,043 4,415 3,911 3,911 4,218 4,283 4,134 6,143 7,630
3-1/2 x 8 - 5-3/8" 8.9587 15 133,469 5,064 5,531 4,896 4,896 5,284 5,363 5,176 7,700 9,569
3-3/4 x 8 2-1/4" 5-3/4" 10.3337 15 153,954 6,243 6,821 6,034 6,034 6,516 6,611 6,380 9,500 11,811
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(IN)
BOLT
LOAD
(lbf)

TORQUE GUIDE FOR ASTM A193 GRADE B8 Class 2
MINIMUM YIELD (ksi) 100 80 65 50
SCREW IN2
1/2 x 13 3/8" 7/8" 0.1418 50 7,112 44 47 43 43 45 47 45 65 79
5/8 x 11 1/2" 1-1/16" 0.2259 50 11,327 86 93 85 85 89 92 89 127 155
3/4 x 10 5/8" 1-1/4" 0.3343 50 16,763 150 163 148 148 156 160 155 223 273
7/8 x 9 3/4" 1-7/16" 0.4615 40 18,447 191 208 188 188 199 204 197 284 348
1x 8 3/4" 1-5/8" 0.6054 40 24,200 286 310 280 280 297 304 295 424 520
1-1/8 x 8 7/8" 1-13/16" 0.7901 33 25,837 339 368 332 332 352 360 349 505 620
1-1/4 x 8 7/8" 2" 0.9992 33 32,677 471 512 460 460 490 501 485 704 866
1-3/8 x 8 1" 2-3/16" 1.2329 25 30,912 486 529 474 474 506 517 500 728 897
1-1/2 x 8 1" 2-3/8" 1.4911 25 37,385 637 693 620 620 663 676 654 955 1,179
REV 21.06.23
TORQUE GUIDE FOR ASTM A193 GRADE B8M Class 2
MINIMUM YIELD (ksi) 95 80 65 50
SCREW IN2
1/2 x 13 3/8" 7/8" 0.1418 48 6,751 41 45 41 41 43 44 43 61 75
5/8 x 11 1/2" 1-1/16" 0.2259 48 10,753 82 88 80 80 84 87 84 121 147
3/4 x 10 5/8" 1-1/4" 0.3343 48 15,913 143 155 140 140 148 152 147 212 259
7/8 x 9 3/4" 1-7/16" 0.4615 40 18,447 191 208 188 188 199 204 197 284 348
1x 8 3/4" 1-5/8" 0.6054 40 24,200 286 310 280 280 297 304 295 424 520
1-1/8 x 8 7/8" 1-13/16" 0.7901 33 25,837 339 368 332 332 352 360 349 505 620
1-1/4 x 8 7/8" 2" 0.9992 33 32,677 471 512 460 460 490 501 485 704 866
1-3/8 x 8 1" 2-3/16" 1.2329 25 30,912 486 529 474 474 506 517 500 728 897
1-1/2 x 8 1" 2-3/8" 1.4911 25 37,385 637 693 620 620 663 676 654 955 1,179
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(IN)
BOLT
LOAD
(lbf)
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(IN)
BOLT
LOAD
(lbf)

TORQUE GUIDE FOR ASTM A193 GRADE B8 Class 2B
MINIMUM YIELD (psi) 75 65 55
SCREW IN2
1/2 x 13 3/8" 7/8" 0.1418 37 5,308 33 35 32 32 34 35 34 48 59
5/8 x 11 1/2" 1-1/16" 0.2259 37 8,454 64 69 63 63 66 68 66 95 116
3/4 x 10 5/8" 1-1/4" 0.3343 37 12,512 112 122 110 110 116 120 116 166 204
7/8 x 9 3/4" 1-7/16" 0.4615 37 17,273 179 194 176 176 186 191 185 266 326
1x 8 3/4" 1-5/8" 0.6054 37 22,660 268 290 262 262 278 285 276 397 487
1-1/8 x 8 7/8" 1-13/16" 0.7901 37 29,570 388 421 379 379 403 412 399 578 710
1-1/4 x 8 7/8" 2" 0.9992 37 37,397 540 586 527 527 561 573 555 805 991
1-3/8 x 8 1" 2-3/16" 1.2329 37 46,143 726 789 708 708 755 771 746 1,087 1,339
1-1/2 x 8 1" 2-3/8" 1.4911 37 55,807 951 1,034 926 926 989 1,010 976 1,426 1,759
1-5/8 x 8 - 2-9/16" 1.7738 37 66,390 1,218 1,325 1,185 1,185 1,268 1,293 1,250 1,830 2,260
1-3/4 x 8 1-1/4" 2-3/4" 2.0811 37 77,890 1,531 1,667 1,488 1,488 1,594 1,624 1,570 2,303 2,847
1-7/8 x 8 1-3/8" 2-15/16" 2.4129 37 90,308 1,893 2,062 1,839 1,839 1,971 2,008 1,940 2,852 3,527
2 x 8 1-5/8" 3-1/8" 2.7692 37 103,645 2,308 2,514 2,241 2,241 2,404 2,447 2,365 3,481 4,308
2-1/8 x 8 - 3-5/16" 3.1501 33 103,019 2,428 2,647 2,356 2,356 2,530 2,575 2,487 3,667 4,541
2-1/4 x 8 1-3/4" 3-1/2" 3.5555 33 116,277 2,893 3,154 2,806 2,806 3,015 3,067 2,962 4,373 5,417
2-3/8 x 8 - 3-11/16" 3.9854 33 130,337 3,413 3,722 3,308 3,308 3,557 3,618 3,494 5,163 6,400
2-1/2 x 8 1-7/8" 3-7/8" 4.4399 33 145,200 3,992 4,354 3,868 3,868 4,161 4,231 4,086 6,044 7,494
2-3/4 x 8 2" 4-1/4" 5.4224 28 149,746 4,508 4,919 4,365 4,365 4,701 4,777 4,612 6,834 8,480
3 x 8 2-1/4" 4-5/8" 6.5030 28 179,590 5,875 6,414 5,686 5,686 6,129 6,224 6,009 8,918 11,072
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(IN)
BOLT
LOAD
(lbf)

MINIMUM YIELD (Mpa) 660
HEX CAP BOLT MOLYKOTE® MOLYKOTE® MOLYKOTE® MOLYKOTE® MOLYKOTE® MOLYKOTE® Rocol Machine Dry
BOLT STRESS 1000 HSC Plus Paste D Paste P-1900 FM Anti-Seize P-74 Paste P-37 Anti-Seize Anti-Seize Stainless Oil New Clean Bolt
(mm) Mpa ut = 0.13 ut = 0.14 ut = 0.10 ut = 0.10 ut = 0.14 ut = 0.11 ut = 0.106 ut = 0.16 ut = 0.20
un = 0.08 un = 0.09 un = 0.10 un = 0.10 un = 0.08 un = 0.11 un = 0.106 un = 0.16 un = 0.20
M12x1.75 10 19 84 330.00 27.81 48 52 47 47 50 51 49 70 86
M14x2 12 22 115 330.00 38.10 76 82 75 75 79 81 78 112 137
M16x2 14 24 157 330.00 51.70 115 125 112 112 120 122 118 170 208
M20x2.5 17 30 245 330.00 80.79 225 244 219 219 234 238 231 332 406
M22x2.5 17 32 303 330.00 100.13 302 327 294 294 314 319 309 446 547
M24x3 19 36 353 330.00 116.33 389 421 379 379 404 411 399 573 702
M27x3 19 41 459 330.00 151.61 565 613 551 551 587 599 579 838 1,029
M30x3.5 22 46 561 330.00 185.00 772 836 753 753 801 818 792 1,142 1,402
M33x3.5 24 50 694 330.00 228.88 1,038 1,127 1,011 1,011 1,079 1,099 1,064 1,541 1,894
M36x4 27 55 817 330.00 269.53 1,342 1,455 1,308 1,308 1,394 1,421 1,376 1,989 2,443
M39x4 27(30) 60 976 330.00 322.01 1,728 1,875 1,683 1,683 1,795 1,831 1,772 2,569 3,160
M42x4.5 32 65 1121 330.00 369.92 2,148 2,331 2,094 2,094 2,232 2,277 2,204 3,191 3,922
M45x4.5 - 70 1306 330.00 431.00 2,669 2,898 2,601 2,601 2,774 2,830 2,739 3,976 4,892
M48x5 36 75 1473 330.00 486.16 3,225 3,501 3,146 3,146 3,352 3,421 3,311 4,800 5,903
M52x5 36 80 1758 330.00 580.11 4,128 4,484 4,019 4,019 4,292 4,374 4,232 6,152 7,574
M56x5.5 41 85 2030 330.00 669.94 5,127 5,567 4,988 4,988 5,331 5,428 5,252 7,627 9,387
M60x5.5 46 90 2362 330.00 779.50 6,341 6,888 6,160 6,160 6,596 6,708 6,489 9,445 11,635
M64x6 46 95 2676 330.00 883.11 7,658 8,317 7,437 7,437 7,966 8,096 7,832 11,390 14,025
M68x6 50 100 3055 330.00 1,008.29 9,229 10,028 8,952 8,952 9,604 9,750 9,431 13,742 16,935
M72x6 55 105 3460 330.00 1,141.76 11,001 11,957 10,658 10,658 11,452 11,615 11,232 16,396 20,221
M76x6 60 110 3889 330.00 1,283.53 12,985 14,118 12,568 12,568 13,522 13,702 13,248 19,370 23,904
M80x6 65 115 4344 330.00 1,433.59 15,193 16,525 14,693 14,693 15,826 16,024 15,492 22,683 28,009
M90x6 70(75) 130 5591 330.00 1,845.02 21,868 23,804 21,133 21,133 22,789 23,069 22,295 32,750 40,494
M100x6 85 145 6995 330.00 2,308.29 30,253 32,953 29,221 29,221 31,540 31,921 30,841 45,423 56,225
M110x6 - 155 8556 330.00 2,823.40 40,262 43,870 38,791 38,791 42,000 42,399 40,955 60,439 74,871
M125x6 - 180 11192 330.00 3,693.26 59,798 65,208 57,648 57,648 62,392 63,058 60,894 90,109 111,750
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(mm)
STRESS
AREA
(mm)2
BOLT
LOAD
(kN)
REQUIRED TORQUE (N-m)
If '' factor is not listed, Enter appropriate value under Custom (insert ut = coefficient of friction in thread, un = coeffieient of friction in nut) , in yellow field only

M12x1.75 10 19 84 470.00 39.61 68 74 67 67 71 72 70 100 122
M14x2 12 22 115 470.00 54.26 108 117 106 106 112 115 111 159 195
M16x2 14 24 157 470.00 73.64 164 178 160 160 170 174 168 242 296
M20x2.5 17 30 245 470.00 115.06 321 347 312 312 333 339 328 472 579
M22x2.5 17 32 303 470.00 142.61 430 466 418 418 447 454 440 635 779
M24x3 19 36 353 470.00 165.69 554 600 540 540 575 586 568 816 1,000
M27x3 19 41 459 470.00 215.93 805 873 784 784 837 853 825 1,193 1,465
M30x3.5 22 46 561 470.00 263.49 1,099 1,191 1,072 1,072 1,141 1,164 1,127 1,627 1,996
M33x3.5 24 50 694 470.00 325.99 1,479 1,605 1,440 1,440 1,537 1,566 1,515 2,194 2,697
M36x4 27 55 817 470.00 383.88 1,911 2,073 1,863 1,863 1,986 2,024 1,960 2,833 3,480
M39x4 27(30) 60 976 470.00 458.62 2,460 2,671 2,397 2,397 2,557 2,607 2,523 3,659 4,500
M42x4.5 32 65 1121 470.00 526.85 3,059 3,319 2,983 2,983 3,179 3,243 3,139 4,545 5,586
M45x4.5 - 70 1306 470.00 613.85 3,801 4,128 3,705 3,705 3,951 4,031 3,901 5,663 6,968
M48x5 36 75 1473 470.00 692.41 4,594 4,986 4,480 4,480 4,773 4,873 4,716 6,836 8,407
M52x5 36 80 1758 470.00 826.22 5,879 6,386 5,724 5,724 6,113 6,230 6,028 8,761 10,787
M56x5.5 41 85 2030 470.00 954.15 7,302 7,929 7,104 7,104 7,592 7,731 7,480 10,863 13,369
M60x5.5 46 90 2362 470.00 1,110.20 9,031 9,811 8,774 8,774 9,394 9,553 9,241 13,452 16,570
M64x6 46 95 2676 470.00 1,257.76 10,907 11,845 10,592 10,592 11,345 11,530 11,155 16,222 19,976
M68x6 50 100 3055 470.00 1,436.05 13,145 14,282 12,749 12,749 13,679 13,886 13,431 19,572 24,120
M72x6 55 105 3460 470.00 1,626.14 15,668 17,030 15,180 15,180 16,310 16,542 15,997 23,351 28,799
M76x6 60 110 3889 470.00 1,828.05 18,494 20,108 17,900 17,900 19,258 19,515 18,869 27,587 34,046
M80x6 65 115 4344 470.00 2,041.77 21,639 23,536 20,926 20,926 22,540 22,823 22,064 32,306 39,892
M90x6 70(75) 130 5591 470.00 2,627.76 31,145 33,902 30,098 30,098 32,457 32,856 31,753 46,644 57,674
M100x6 85 145 6995 470.00 3,287.57 43,087 46,934 41,617 41,617 44,920 45,463 43,925 64,694 80,078
M110x6 - 155 8556 470.00 4,021.21 57,343 62,482 55,247 55,247 59,818 60,386 58,331 86,079 106,634
M125x6 - 180 11192 470.00 5,260.10 85,167 92,873 82,105 82,105 88,862 89,810 86,728 128,338 159,160
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(mm)
STRESS
AREA
(mm)2
BOLT
LOAD
(kN)

M12x1.75 10 19 84 550.00 46.35 80 86 78 78 83 85 82 117 143
M14x2 12 22 115 550.00 63.50 127 137 124 124 132 135 130 187 228
M16x2 14 24 157 550.00 86.17 192 208 187 187 199 203 197 283 347
M20x2.5 17 30 245 550.00 134.64 375 406 366 366 389 397 384 553 677
M22x2.5 17 32 303 550.00 166.88 503 546 489 489 523 532 515 743 912
M24x3 19 36 353 550.00 193.89 648 702 632 632 673 686 664 955 1,171
M27x3 19 41 459 550.00 252.69 942 1,022 918 918 979 998 966 1,396 1,715
M30x3.5 22 46 561 550.00 308.34 1,286 1,394 1,254 1,254 1,336 1,363 1,319 1,903 2,336
M33x3.5 24 50 694 550.00 381.47 1,731 1,878 1,685 1,685 1,799 1,832 1,773 2,568 3,156
M36x4 27 55 817 550.00 449.22 2,236 2,426 2,180 2,180 2,323 2,369 2,293 3,315 4,072
M39x4 27(30) 60 976 550.00 536.69 2,879 3,125 2,805 2,805 2,992 3,051 2,953 4,282 5,266
M42x4.5 32 65 1121 550.00 616.53 3,580 3,884 3,490 3,490 3,720 3,795 3,673 5,318 6,537
M45x4.5 - 70 1306 550.00 718.33 4,448 4,830 4,335 4,335 4,624 4,717 4,565 6,626 8,154
M48x5 36 75 1473 550.00 810.27 5,376 5,835 5,243 5,243 5,586 5,702 5,519 8,000 9,838
M52x5 36 80 1758 550.00 966.85 6,880 7,473 6,698 6,698 7,153 7,290 7,053 10,253 12,623
M56x5.5 41 85 2030 550.00 1,116.56 8,545 9,278 8,314 8,314 8,885 9,047 8,754 12,712 15,645
M60x5.5 46 90 2362 550.00 1,299.17 10,568 11,481 10,267 10,267 10,993 11,179 10,814 15,741 19,391
M64x6 46 95 2676 550.00 1,471.85 12,764 13,862 12,394 12,394 13,277 13,493 13,053 18,983 23,376
M68x6 50 100 3055 550.00 1,680.48 15,382 16,713 14,919 14,919 16,007 16,250 15,718 22,903 28,225
M72x6 55 105 3460 550.00 1,902.93 18,335 19,928 17,764 17,764 19,086 19,358 18,720 27,326 33,701
M76x6 60 110 3889 550.00 2,139.21 21,641 23,531 20,947 20,947 22,536 22,836 22,081 32,283 39,841
M80x6 65 115 4344 550.00 2,389.31 25,322 27,542 24,488 24,488 26,377 26,707 25,820 37,805 46,682
M90x6 70(75) 130 5591 550.00 3,075.04 36,446 39,673 35,221 35,221 37,982 38,448 37,158 54,583 67,491
M100x6 85 145 6995 550.00 3,847.16 50,421 54,922 48,701 48,701 52,566 53,202 51,402 75,706 93,709
M110x6 - 155 8556 550.00 4,705.67 67,104 73,117 64,651 64,651 70,000 70,664 68,259 100,731 124,785
M125x6 - 180 11192 550.00 6,155.43 99,664 108,681 96,080 96,080 103,987 105,097 101,490 150,182 186,251
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(mm)
STRESS
AREA
(mm)2
BOLT
LOAD
(kN)

TORQUE GUIDE FOR ISO SAE J429 GRADE 5
MINIMUM YIELD (Mpa) 633 557
M12x1.75 10 19 84 316.48 26.67 46 50 45 45 48 49 47 67 82
M14x2 12 22 115 316.48 36.54 73 79 71 71 76 77 75 107 131
M16x2 14 24 157 316.48 49.59 110 120 108 108 115 117 113 163 200
M20x2.5 17 30 245 316.48 77.48 216 234 210 210 224 228 221 318 390
M22x2.5 17 32 303 316.48 96.02 290 314 282 282 301 306 296 427 525
M24x3 19 36 353 316.48 111.57 373 404 364 364 387 395 382 550 674
M27x3 19 41 459 316.48 145.40 542 588 528 528 563 574 556 803 987
M30x3.5 22 46 561 278.64 156.21 651 706 635 635 677 690 668 964 1,183
M33x3.5 24 50 694 278.64 193.26 877 951 854 854 911 928 898 1,301 1,599
M36x4 27 55 817 278.64 227.58 1,133 1,229 1,104 1,104 1,177 1,200 1,162 1,679 2,063
M39x4 27(30) 60 976 278.64 271.90 1,459 1,583 1,421 1,421 1,516 1,546 1,496 2,169 2,668
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(mm)
STRESS
AREA
(mm)2
BOLT
LOAD
(kN)

TORQUE GUIDE FOR ISO SAE J429 GRADE 8
M12x1.75 10 19 84 316.48 26.67 46 50 45 45 48 49 47 67 82
M14x2 12 22 115 316.48 36.54 73 79 71 71 76 77 75 107 131
M16x2 14 24 157 316.48 49.59 110 120 108 108 115 117 113 163 200
M20x2.5 17 30 245 316.48 77.48 216 234 210 210 224 228 221 318 390
M22x2.5 17 32 303 316.48 96.02 290 314 282 282 301 306 296 427 525
M24x3 19 36 353 316.48 111.57 373 404 364 364 387 395 382 550 674
M27x3 19 41 459 316.48 145.40 542 588 528 528 563 574 556 803 987
M30x3.5 22 46 561 316.48 177.42 740 802 722 722 768 784 759 1,095 1,344
M33x3.5 24 50 694 316.48 219.51 996 1,081 970 970 1,035 1,054 1,020 1,478 1,816
M36x4 27 55 817 316.48 258.49 1,287 1,396 1,254 1,254 1,337 1,363 1,320 1,908 2,343
M39x4 27(30) 60 976 316.48 308.82 1,657 1,798 1,614 1,614 1,722 1,756 1,699 2,464 3,030
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(mm)
STRESS
AREA
(mm)2
BOLT
LOAD
(kN)

TORQUE GUIDE FOR ASTM A320 GRADE L7
M12x1.75 10 19 84 362.50 30.55 53 57 51 51 54 56 54 77 94
M14x2 12 22 115 362.50 41.85 84 90 82 82 87 89 86 123 150
M16x2 14 24 157 362.50 56.80 127 137 123 123 131 134 130 187 229
M20x2.5 17 30 245 362.50 88.74 247 268 241 241 257 262 253 364 447
M22x2.5 17 32 303 362.50 109.99 332 360 322 322 345 350 339 490 601
M24x3 19 36 353 362.50 127.79 427 463 416 416 444 452 438 630 772
M27x3 19 41 459 362.50 166.54 621 674 605 605 645 658 637 920 1,130
M30x3.5 22 46 561 362.50 203.22 848 919 827 827 880 898 870 1,255 1,540
M33x3.5 24 50 694 362.50 251.43 1,141 1,238 1,111 1,111 1,185 1,208 1,169 1,692 2,080
M36x4 27 55 817 362.50 296.08 1,474 1,599 1,437 1,437 1,531 1,561 1,511 2,185 2,684
M39x4 27(30) 60 976 362.50 353.73 1,898 2,060 1,849 1,849 1,972 2,011 1,946 2,822 3,471
M42x4.5 32 65 1121 362.50 406.35 2,359 2,560 2,301 2,301 2,452 2,501 2,421 3,505 4,309
M45x4.5 - 70 1306 362.50 473.45 2,932 3,184 2,857 2,857 3,047 3,109 3,008 4,367 5,374
M48x5 36 75 1473 362.50 534.04 3,543 3,846 3,456 3,456 3,682 3,758 3,637 5,273 6,484
M52x5 36 80 1758 362.50 637.24 4,535 4,925 4,415 4,415 4,715 4,805 4,649 6,757 8,319
M56x5.5 41 85 2030 362.50 735.91 5,632 6,115 5,479 5,479 5,856 5,963 5,769 8,379 10,311
M60x5.5 46 90 2362 362.50 856.27 6,965 7,567 6,767 6,767 7,246 7,368 7,128 10,375 12,780
M64x6 46 95 2676 362.50 970.08 8,412 9,136 8,169 8,169 8,750 8,893 8,603 12,512 15,407
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(mm)
STRESS
AREA
(mm)2
BOLT
LOAD
(kN)

TORQUE GUIDE FOR ASTM A320 GRADE L7M
M12x1.75 10 19 84 275.00 23.17 40 43 39 39 41 42 41 59 72
M14x2 12 22 115 275.00 31.75 63 69 62 62 66 67 65 93 114
M16x2 14 24 157 275.00 43.09 96 104 94 94 100 102 98 142 173
M20x2.5 17 30 245 275.00 67.32 188 203 183 183 195 198 192 276 339
M22x2.5 17 32 303 275.00 83.44 252 273 245 245 262 266 257 371 456
M24x3 19 36 353 275.00 96.94 324 351 316 316 336 343 332 478 585
M27x3 19 41 459 275.00 126.34 471 511 459 459 489 499 483 698 857
M30x3.5 22 46 561 275.00 154.17 643 697 627 627 668 681 660 952 1,168
M33x3.5 24 50 694 275.00 190.74 865 939 843 843 899 916 887 1,284 1,578
M36x4 27 55 817 275.00 224.61 1,118 1,213 1,090 1,090 1,162 1,184 1,147 1,658 2,036
M39x4 27(30) 60 976 275.00 268.34 1,440 1,563 1,402 1,402 1,496 1,526 1,476 2,141 2,633
M42x4.5 32 65 1121 275.00 308.27 1,790 1,942 1,745 1,745 1,860 1,898 1,837 2,659 3,269
M45x4.5 - 70 1306 275.00 359.17 2,224 2,415 2,168 2,168 2,312 2,359 2,282 3,313 4,077
M48x5 36 75 1473 275.00 405.14 2,688 2,918 2,621 2,621 2,793 2,851 2,759 4,000 4,919
M52x5 36 80 1758 275.00 483.43 3,440 3,736 3,349 3,349 3,577 3,645 3,527 5,126 6,311
M56x5.5 41 85 2030 275.00 558.28 4,273 4,639 4,157 4,157 4,442 4,523 4,377 6,356 7,822
M60x5.5 46 90 2362 275.00 649.58 5,284 5,740 5,134 5,134 5,497 5,590 5,407 7,871 9,695
M64x6 46 95 2676 275.00 735.92 6,382 6,931 6,197 6,197 6,638 6,746 6,527 9,492 11,688
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(mm)
STRESS
AREA
(mm)2
BOLT
LOAD
(kN)

TORQUE GUIDE FOR ASTM A193 GRADE B7, B16
M12x1.75 10 19 84 362.50 30.55 53 57 51 51 54 56 54 73 94
M14x2 12 22 115 362.50 41.85 84 90 82 82 87 89 86 116 150
M16x2 14 24 157 362.50 56.80 127 137 123 123 131 134 130 176 229
M20x2.5 17 30 245 362.50 88.74 247 268 241 241 257 262 253 344 447
M22x2.5 17 32 303 362.50 109.99 332 360 322 322 345 350 339 462 601
M24x3 19 36 353 362.50 127.79 427 463 416 416 444 452 438 594 772
M27x3 19 41 459 362.50 166.54 621 674 605 605 645 658 637 868 1,130
M30x3.5 22 46 561 362.50 203.22 848 919 827 827 880 898 870 1,183 1,540
M33x3.5 24 50 694 362.50 251.43 1,141 1,238 1,111 1,111 1,185 1,208 1,169 1,595 2,080
M36x4 27 55 817 362.50 296.08 1,474 1,599 1,437 1,437 1,531 1,561 1,511 2,060 2,684
M39x4 27(30) 60 976 362.50 353.73 1,898 2,060 1,849 1,849 1,972 2,011 1,946 2,660 3,471
M42x4.5 32 65 1121 362.50 406.35 2,359 2,560 2,301 2,301 2,452 2,501 2,421 3,305 4,309
M45x4.5 - 70 1306 362.50 473.45 2,932 3,184 2,857 2,857 3,047 3,109 3,008 4,116 5,374
M48x5 36 75 1473 362.50 534.04 3,543 3,846 3,456 3,456 3,682 3,758 3,637 4,970 6,484
M52x5 36 80 1758 362.50 637.24 4,535 4,925 4,415 4,415 4,715 4,805 4,649 6,367 8,319
M56x5.5 41 85 2030 362.50 735.91 5,632 6,115 5,479 5,479 5,856 5,963 5,769 7,895 10,311
M60x5.5 46 90 2362 362.50 856.27 6,965 7,567 6,767 6,767 7,246 7,368 7,128 9,774 12,780
M64x6 46 95 2676 362.50 970.08 8,412 9,136 8,169 8,169 8,750 8,893 8,603 11,788 15,407
M68x6 50 100 3055 327.50 1,000.65 9,159 9,952 8,884 8,884 9,531 9,676 9,359 12,845 16,807
M72x6 55 105 3460 327.50 1,133.11 10,917 11,866 10,578 10,578 11,365 11,527 11,147 15,322 20,067
M76x6 60 110 3889 327.50 1,273.80 12,887 14,012 12,473 12,473 13,419 13,598 13,148 18,098 23,723
M80x6 65 115 4344 327.50 1,422.73 15,078 16,400 14,581 14,581 15,706 15,903 15,374 21,189 27,797
M90x6 70(75) 130 5591 327.50 1,831.04 21,702 23,623 20,973 20,973 22,616 22,894 22,126 30,580 40,188
M100x6 85 145 6995 327.50 2,290.81 30,024 32,704 28,999 28,999 31,301 31,679 30,607 42,399 55,799
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(mm)
STRESS
AREA
(mm)2
BOLT
LOAD
(kN)

TORQUE GUIDE FOR ASTM A193 GRADE B7M
M12x1.75 10 19 84 275.00 23.17 40 43 39 39 41 42 41 59 72
M14x2 12 22 115 275.00 31.75 63 69 62 62 66 67 65 93 114
M16x2 14 24 157 275.00 43.09 96 104 94 94 100 102 98 142 173
M20x2.5 17 30 245 275.00 67.32 188 203 183 183 195 198 192 276 339
M22x2.5 17 32 303 275.00 83.44 252 273 245 245 262 266 257 371 456
M24x3 19 36 353 275.00 96.94 324 351 316 316 336 343 332 478 585
M27x3 19 41 459 275.00 126.34 471 511 459 459 489 499 483 698 857
M30x3.5 22 46 561 275.00 154.17 643 697 627 627 668 681 660 952 1,168
M33x3.5 24 50 694 275.00 190.74 865 939 843 843 899 916 887 1,284 1,578
M36x4 27 55 817 275.00 224.61 1,118 1,213 1,090 1,090 1,162 1,184 1,147 1,658 2,036
M39x4 27(30) 60 976 275.00 268.34 1,440 1,563 1,402 1,402 1,496 1,526 1,476 2,141 2,633
M42x4.5 32 65 1121 275.00 308.27 1,790 1,942 1,745 1,745 1,860 1,898 1,837 2,659 3,269
M45x4.5 - 70 1306 275.00 359.17 2,224 2,415 2,168 2,168 2,312 2,359 2,282 3,313 4,077
M48x5 36 75 1473 275.00 405.14 2,688 2,918 2,621 2,621 2,793 2,851 2,759 4,000 4,919
M52x5 36 80 1758 275.00 483.43 3,440 3,736 3,349 3,349 3,577 3,645 3,527 5,126 6,311
M56x5.5 41 85 2030 275.00 558.28 4,273 4,639 4,157 4,157 4,442 4,523 4,377 6,356 7,822
M60x5.5 46 90 2362 275.00 649.58 5,284 5,740 5,134 5,134 5,497 5,590 5,407 7,871 9,695
M64x6 46 95 2676 275.00 735.92 6,382 6,931 6,197 6,197 6,638 6,746 6,527 9,492 11,688
M68x6 50 100 3055 275.00 840.24 7,691 8,356 7,460 7,460 8,003 8,125 7,859 11,451 14,113
M72x6 55 105 3460 275.00 951.47 9,167 9,964 8,882 8,882 9,543 9,679 9,360 13,663 16,850
M76x6 60 110 3889 275.00 1,069.60 10,821 11,765 10,474 10,474 11,268 11,418 11,040 16,142 19,920
M80x6 65 115 4344 275.00 1,194.66 12,661 13,771 12,244 12,244 13,188 13,354 12,910 18,902 23,341
M90x6 70(75) 130 5591 275.00 1,537.52 18,223 19,836 17,611 17,611 18,991 19,224 18,579 27,291 33,745
M100x6 85 145 6995 275.00 1,923.58 25,211 27,461 24,351 24,351 26,283 26,601 25,701 37,853 46,854
M110x6 - 155 8556 257.50 2,203.11 31,417 34,232 30,268 30,268 32,772 33,084 31,958 47,161 58,422
M125x6 - 180 11192 257.50 2,881.86 46,661 50,882 44,983 44,983 48,685 49,205 47,516 70,313 87,199
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(mm)
STRESS
AREA
(mm)2
BOLT
LOAD
(kN)

TORQUE GUIDE FOR ASTM A193 GRADE B8, B8M, B8C,B8 Class-1,B8M Class 1
M12x1.75 10 19 84 102.50 8.64 15 16 15 15 15 16 15 22 27
M14x2 12 22 115 102.50 11.83 24 26 23 23 25 25 24 35 43
M16x2 14 24 157 102.50 16.06 36 39 35 35 37 38 37 53 65
M20x2.5 17 30 245 102.50 25.09 70 76 68 68 73 74 72 103 126
M22x2.5 17 32 303 102.50 31.10 94 102 91 91 97 99 96 138 170
M24x3 19 36 353 102.50 36.13 121 131 118 118 125 128 124 178 218
M27x3 19 41 459 102.50 47.09 176 190 171 171 182 186 180 260 320
M30x3.5 22 46 561 102.50 57.46 240 260 234 234 249 254 246 355 435
M33x3.5 24 50 694 102.50 71.09 323 350 314 314 335 341 330 479 588
M36x4 27 55 817 102.50 83.72 417 452 406 406 433 441 427 618 759
M39x4 27(30) 60 976 102.50 100.02 537 582 523 523 558 569 550 798 981
M42x4.5 32 65 1121 102.50 114.90 667 724 650 650 693 707 685 991 1,218
M45x4.5 - 70 1306 102.50 133.87 829 900 808 808 862 879 851 1,235 1,520
M48x5 36 75 1473 102.50 151.00 1,002 1,087 977 977 1,041 1,063 1,028 1,491 1,833
M52x5 36 80 1758 102.50 180.19 1,282 1,393 1,248 1,248 1,333 1,359 1,315 1,911 2,352
M56x5.5 41 85 2030 102.50 208.09 1,592 1,729 1,549 1,549 1,656 1,686 1,631 2,369 2,916
M60x5.5 46 90 2362 102.50 242.12 1,970 2,140 1,913 1,913 2,049 2,083 2,015 2,934 3,614
M64x6 46 95 2676 102.50 274.30 2,379 2,583 2,310 2,310 2,474 2,515 2,433 3,538 4,356
M68x6 50 100 3055 102.50 313.18 2,867 3,115 2,780 2,780 2,983 3,028 2,929 4,268 5,260
M72x6 55 105 3460 102.50 354.64 3,417 3,714 3,311 3,311 3,557 3,608 3,489 5,093 6,281
M76x6 60 110 3889 102.50 398.67 4,033 4,385 3,904 3,904 4,200 4,256 4,115 6,016 7,425
M80x6 65 115 4344 102.50 445.28 4,719 5,133 4,564 4,564 4,916 4,977 4,812 7,045 8,700
M90x6 70(75) 130 5591 102.50 573.07 6,792 7,394 6,564 6,564 7,078 7,165 6,925 10,172 12,578
M100x6 85 145 6995 102.50 716.97 9,397 10,236 9,076 9,076 9,796 9,915 9,579 14,109 17,464
M110x6 - 155 8556 102.50 876.97 12,506 13,626 12,049 12,049 13,045 13,169 12,721 18,773 23,255
M125x6 - 180 11192 102.50 1,147.15 18,574 20,254 17,906 17,906 19,379 19,586 18,914 27,989 34,710
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(mm)
STRESS
AREA
(mm)2
BOLT
LOAD
(kN)

TORQUE GUIDE FOR ASTM A193 GRADE B8 Class-2
MINIMUM YIELD (Mpa) 690 550 450 345
M12x1.75 10 19 84 345.00 29.07 50 54 49 49 52 53 51 74 90
M14x2 12 22 115 345.00 39.83 80 86 78 78 82 84 82 117 143
M16x2 14 24 157 345.00 54.05 120 130 117 117 125 127 123 178 218
M20x2.5 17 30 245 345.00 84.46 235 255 229 229 244 249 241 347 425
M22x2.5 17 32 303 275.00 83.44 252 273 245 245 262 266 257 371 456
M24x3 19 36 353 275.00 96.94 324 351 316 316 336 343 332 478 585
M27x3 19 41 459 225.00 103.37 385 418 376 376 400 408 395 571 701
M30x3.5 22 46 561 225.00 126.14 526 570 513 513 546 557 540 779 956
M33x3.5 24 50 694 172.50 119.64 543 589 528 528 564 575 556 805 990
M36x4 27 55 817 172.50 140.89 701 761 684 684 729 743 719 1,040 1,277
REV 21.06.23
TORQUE GUIDE FOR ASTM A193 GRADE B8M Class-2
MINIMUM YIELD (Mpa) 655 550 450 345
M12x1.75 10 19 84 327.50 27.60 47 51 47 47 49 50 49 70 85
M14x2 12 22 115 327.50 37.81 76 82 74 74 78 80 78 111 136
M16x2 14 24 157 327.50 51.31 114 124 111 111 119 121 117 169 207
M20x2.5 17 30 245 327.50 80.17 223 242 218 218 232 236 229 329 403
M22x2.5 17 32 303 275.00 83.44 252 273 245 245 262 266 257 371 456
M24x3 19 36 353 275.00 96.94 324 351 316 316 336 343 332 478 585
M27x3 19 41 459 225.00 103.37 385 418 376 376 400 408 395 571 701
M30x3.5 22 46 561 225.00 126.14 526 570 513 513 546 557 540 779 956
M33x3.5 24 50 694 172.50 119.64 543 589 528 528 564 575 556 805 990
M36x4 27 55 817 172.50 140.89 701 761 684 684 729 743 719 1,040 1,277
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(mm)
STRESS
AREA
(mm)2
BOLT
LOAD
(kN)
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(mm)
STRESS
AREA
(mm)2
BOLT
LOAD
(kN)

TORQUE GUIDE FOR ASTM A193 GRADE B8 Class 2B
MINIMUM YIELD (Mpa) 515 450 380
M12x1.75 10 19 84 257.50 21.70 37 40 37 37 39 40 38 55 67
M14x2 12 22 115 257.50 29.73 59 64 58 58 62 63 61 87 107
M16x2 14 24 157 257.50 40.34 90 97 88 88 93 95 92 133 162
M20x2.5 17 30 245 257.50 63.04 176 190 171 171 182 186 180 259 317
M22x2.5 17 32 303 257.50 78.13 236 255 229 229 245 249 241 348 427
M24x3 19 36 353 257.50 90.77 303 329 296 296 315 321 311 447 548
M27x3 19 41 459 257.50 118.30 441 478 430 430 458 467 452 654 803
M30x3.5 22 46 561 257.50 144.36 602 653 587 587 625 638 618 891 1,094
M33x3.5 24 50 694 257.50 178.60 810 879 789 789 842 858 830 1,202 1,478
M36x4 27 55 817 257.50 210.32 1,047 1,136 1,021 1,021 1,088 1,109 1,074 1,552 1,906
M39x4 27(30) 60 976 257.50 251.27 1,348 1,463 1,313 1,313 1,401 1,428 1,382 2,005 2,466
M42x4.5 32 65 1121 257.50 288.65 1,676 1,819 1,634 1,634 1,741 1,777 1,720 2,490 3,061
M45x4.5 - 70 1306 257.50 336.31 2,083 2,261 2,030 2,030 2,165 2,209 2,137 3,102 3,817
M48x5 36 75 1473 257.50 379.35 2,517 2,732 2,455 2,455 2,615 2,670 2,584 3,745 4,606
M52x5 36 80 1758 225.00 395.53 2,815 3,057 2,740 2,740 2,926 2,982 2,886 4,194 5,164
M56x5.5 41 85 2030 225.00 456.77 3,496 3,796 3,401 3,401 3,635 3,701 3,581 5,201 6,400
M60x5.5 46 90 2362 225.00 531.48 4,323 4,697 4,200 4,200 4,497 4,573 4,424 6,440 7,933
M64x6 46 95 2676 225.00 602.12 5,221 5,671 5,070 5,070 5,431 5,520 5,340 7,766 9,563
M68x6 50 100 3055 190.00 580.53 5,314 5,773 5,154 5,154 5,530 5,614 5,430 7,912 9,751
M72x6 55 105 3460 190.00 657.38 6,334 6,884 6,137 6,137 6,593 6,687 6,467 9,440 11,642
REV 21.06.23
BOLT SIZE
DIA. x P
HEX NUT
ACROSS
FLAT
(mm)
STRESS
AREA
(mm)2
BOLT
LOAD
(kN)

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