Fastener Torque Requirements
PELLERIN MILNOR CORPORATION
Table 2: Torque Values for Dry Fasteners Larger Than 5/16-inch
Bolt Grade
Grade 2 Grade 5 Grade 8 Grade BC
Bolt Size Pound-feet N-m Pound-feet N-m Pound-feet N-m Pound-feet N-m
3/8 x 16 20 27 31 42 44 59 38 52
3/8 x 24 23 31 35 47 50 68 -- --
7/16 x 14 32 43 49 66 70 95 61 83
7/16 x 20 36 49 55 75 78 105 -- --
1/2 x 13 49 66 75 102 107 145 93 126
1/2 x 20 55 75 85 115 120 163 -- --
9/16 x 12 70 95 109 148 154 209 134 182
9/16 x 18 78 106 121 164 171 232 -- --
5/8 x 11 97 131 150 203 212 287 186 252
5/8 x 18 110 149 170 231 240 325 -- --
3/4 x 10 172 233 266 361 376 510 329 446
3/14 x 16 192 261 297 403 420 569 -- --
7/8 x 9 167 226 429 582 606 821 531 719
7/8 x 14 184 249 473 641 668 906 -- --
1 x 8 250 339 644 873 909 1232 796 1079
1 x 12 274 371 704 954 994 1348 -- --
1 x 14 281 381 723 980 1020 1383 -- --
1 1/8 x 7 354 480 794 1077 1287 1745 1126 1527
1 1/8 x 12 397 538 891 1208 1444 1958 -- --
1 1/4 x 7 500 678 1120 1519 1817 2464 1590 2155
1 1/4 x 12 553 750 1241 1682 2012 2728 -- --
1 3/8 x 6 655 888 1469 1992 2382 3230 2085 2827
1 3/8 x 12 746 1011 1672 2267 2712 3677 -- --
1 1/2 x 6 869 1178 1949 2642 3161 4286 2767 3751
1 1/2 x 12 979 1327 2194 2974 3557 4822 -- --
Table 3: Torque Values for Plated Fasteners 5/16-inch and Smaller
Bolt Grade
Grade 2 Grade 5 Grade 8 Grade BC
Bolt Size Pound-Inches N-m Pound-Inches N-m Pound-Inches N-m Pound-Inches N-m
1/4 x 20 49 6 76 9 107 12 95 11
1/4 x 28 56 6 88 10 122 14 -- --
5/16 x 18 102 12 156 18 222 25 193 22
5/16 x 24 113 13 174 20 245 28 -- --
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