APPROXIMATE CLAMPING FORCE
OF STANDARD CLAMP STRAPS
USA
| 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).
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