INCH
Stud Size |
Recommended Torque* (ft-lbs) |
Clamping Force (lbs) |
Tensile Force in Stud (lbs) |
#10-32 |
2 |
300 |
600 |
1/4-20 |
4 |
500 |
1000 |
5/16-18 |
9 |
900 |
1800 |
3/8-16 |
16 |
1300 |
2600 |
1/2-13 |
38 |
2300 |
4600 |
5/8-11 |
77 |
3700 |
7400 |
3/4-10 |
138 |
5500 |
11000 |
7/8-9 |
222 |
7600 |
15200 |
1-8 |
333 |
10000 |
20000 |
METRIC
Stud Size |
Recommended Torque* (ft-lbs) |
Clamping Force (lbs) |
Tensile Force in Stud (lbs) |
M6 |
4 |
500 |
1000 |
M8 |
9 |
900 |
1800 |
M10 |
20 |
1500 |
3000 |
M12 |
35 |
2200 |
4400 |
M16 |
84 |
4000 |
8000 |
M20 |
165 |
6300 |
12600 |
M24 |
283 |
9000 |
18000 |
*Clean, dry clamping stud torqued to approximately 33% of its 100,000 psi yield strength (2:1 lever ratio).