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The Tension Contol bolting system has quickly become the worlds most widely used method of tensioning high strength structural bolts. The ease of use and economic benefits have provided tens of thousands of projects with consistent, reliable, and economical steel connections.
The TC bolt is formally recognized by the AISC (American Institute of Steel Construction) and the RCSC (Research Council on Structural Connections) as an approved installation method.
Key features of the Tension Control assembly include;
- Cost effective, one operator, single sided installation
- Lightweight, non-impacting installation tools
- Visual inspection
- Pre-certified, matched and tested assemblies
- Reliable and efficient bolt tensioning
- Bolt tension is not dependent on operator skill or tool settings
Our Tension Control assemblies are manufactured and tested to ASTM F1852 (A325TC) and F2280 (A490TC) specifications. Available in sizes from 5/8" through 1-1/8" diameter, and lengths up to 9".
| Nominal Diameter, Inches |
F1852 (A325TC) |
F2280 (A490TC) |
Min Tension |
Min Tensile |
Min Tension |
Min Tensile |
| 5/8"-11 0.625 |
19,950 |
27,100 |
25,200 |
33,900 |
| 3/4"-10 0.750 |
29,400 |
40,100 |
36,750 |
50,100 |
| 7/8"-9 0.875 |
40,950 |
55,450 |
51,450 |
69,300 |
| 1"-8 1.000 |
53,550 |
72,700 |
67,200 |
90,900 |
| 1 1/8"-7 1.125 |
58,800 |
80,100 |
84,000 |
114,450 |
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