U.S. BOLT TORQUE SPECIFICATIONS
Torque in foot/pounds
    Grade 2 Grade 2 Grade 5 Grade 5 Grade 7 Grade 7 Grade 8 Grade 8 Socket head cap screw or Automotive application Socket head cap screw or Automotive Application
Bolt Dia. Thread per inch Dry Oiled Dry Oiled Dry Oiled Dry Oiled Dry Oiled
1/4 20 4 3 8 6 10 8 12 9 14 11
1/4 28 6 4 10 7 12 9 14 10 16 13
5/16 18 9 7 17 13 21 16 25 18 29 23
5/16 24 12 9 19 14 24 18 29 20 33 26
3/8 16 16 12 30 23 40 30 45 35 49 39
3/8 24 22 16 35 25 45 35 50 40 54 44
7/16 14 24 17 50 35 60 45 70 55 76 61
7/16 20 34 26 55 40 70 50 80 60 85 68
1/2 13 38 31 75 55 95 70 110 80 113 90
1/2 20 52 42 90 65 100 80 120 90 126 100
9/16 12 52 42 110 80 135 100 150 110 163 130
9/16 18 71 57 120 90 150 110 170 130 181 144
5/8 11 98 78 150 110 140 140 220 170 230 184
5/8 18 115 93 180 130 210 160 240 180 255 204
3/4 10 157 121 260 200 320 240 380 280 400 320
3/4 16 180 133 300 220 360 280 420 320 440 350
7/8 9 210 160 430 320 520 400 600 460 640 510
7/8 14 230 177 470 360 580 440 660 500 700 560
1 8 320 240 640 480 800 600 900 680 980 780
1 12 350 265 710 530 860 666 990 740 1060 845
U.S. BOLT TORQUE SPECIFICATIONS
Torque in inch/pounds
    Grade 2 Grade 2 Grade 5 Grade 5 Grade 7 Grade 7 Grade 8 Grade 8 Socket head cap screw or Automotive application Socket head cap screw or Automotive Application
Bolt Dia. Thread per inch Dry Oiled Dry Oiled Dry Oiled Dry Oiled Dry Oiled
1/4 20 48 36 96 72 120 96 144 108 168 132
1/4 28 72 48 120 84 144 108 168 120 192 156
5/16 18 108 84 204 156 252 192 300 216 348 276
5/16 24 144 108 228 168 288 216 348 240 396 312
3/8 16 192 144 360 276 480 360 540 420 588 468
3/8 24 264 192 420 300 540 420 600 480 648 528
7/16 14 288 204 600 420 720 540 840 660 912 732
7/16 20 408 312 660 480 840 600 960 720 1020 816
1/2 13 456 372 900 660 1140 840 1320 960 1356 1080
1/2 20 624 504 1080 780 1200 960 1440 1080 1512 1200
9/16 12 624 504 1320 960 1620 1200 1800 1320 1956 1560
9/16 18 852 684 1440 1080 1800 1320 2040 1560 2172 1728
5/8 11 1176 936 1800 1320 1680 1680 2640 2040 2760 2208
5/8 18 1380 1116 2160 1560 2520 1920 2880 2160 3060 2448
3/4 10 1884 1452 3120 2400 3840 2880 4560 3360 4800 3840
3/4 16 2160 1596 3600 2640 4320 3360 5040 3840 5280 4200
7/8 9 2520 1920 5160 3840 6240 4800 7200 5520 7680 6120
7/8 14 2760 2124 5640 4320 6960 5280 7920 6000 8400 6720
1 8 3840 2880 7680 5760 9600 7200 10800 8160 11760 9360
1 12 4200 3180 8520 6360 10320 7992 11880 8880 12720 10140