6-46530 ENG Issued 07-11 Printed in Brazil
1001-3
TORQUE SPECIFICATIONS
Decimal
Use the torques in this chart when special torques are not given. These torques apply to fasteners with both UNC and UNF thre-
ads as received from suppliers dry, or when lubricated with engine oil. Not applicable if special graphities, Molydisulde greases,
or other extreme pressure lubricants are used.
GRADE 5 BOLTS, NUTS AND STUDS
Size (inch) Pound-Inches N.m
1/4 9 - 11 12 - 15
5/16 17 - 21 23 - 28
3/8 35 - 42 48 - 57
7/16 54 - 64 73 - 87
1/2 80 - 96 109 - 130
9/16 110 - 132 149 - 179
5/8 150 - 180 203 - 244
3/4 270 - 324 366 - 439
7/8 400 - 480 542 - 651
1.0 580 - 696 787 - 944
1-1/8 800 - 880 1085 - 1193
1-1/4 1120 - 1240 1519 - 1681
1-3/8 1460 - 1680 1980 - 2278
1-1/2 1940 - 2200 2631 - 2983
GRADE 8 BOLTS, NUTS AND STUDS
Size (inch) Pound-Inches N.m
1/4 12 - 15 16 - 20
5/16 24 - 29 33 - 39
3/8 45 - 54 61 - 73
7/16 70 - 84 95 - 114
1/2 110 - 132 149 - 179
9/16 160 - 192 217 - 260
5/8 220 - 264 298 - 358
3/4 380 - 456 515 - 618
7/8 600 - 720 814 - 976
1.0 900 - 1080 1220 - 1465
1-1/8 1280 - 1440 1736 - 1953
1-1/4 1820 - 2000 2468 - 2712
1-3/8 2380 - 2720 3227 - 3688
1-1/2 3160 - 3560 4285 - 4827
NOTE: Use thick nuts with Grade 8 bolts.
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