See This Report about Tension Control Bolts - Copper State Bolt & Nut Co.

A stress control bolt (TC bolt) is a strong bolt utilized in steel frame building. The head is typically domed and is not developed to be driven. The end of the shank has a spline on it which is engaged by an unique power wrench which prevents the bolt from turning while the nut is tightened.

A tension control bolt is a pre-assembled bolt, nut, and washer utilized especially in steel frame building and construction. Likewise referred to as a TC bolt, they have a domed head instead of a hex head because they are installed from a spline on their other end. This spline links with an unique power wrench for installation.

Stress control bolts come perfectly pre-lubricated by the producer. They are all set to be set up with a shear wrench. This wrench has an inner and an external socket.  Baco Enterprises  rotates the spline clockwise and the external socket rotates the nut counterclockwise. As soon as the appropriate tension has been achieved, the spline breaks off.

What Does Tension Control Bolts - Coburn-Myers Mean?

There is simply one lot number included in the stress control bolt assembly and they come specifically lubed. They are controlled by the AISC, American Institute of Steel Construction, and RCSC, Research Council on Structural Connections. The single most special function of the tension control bolt is that it is installed with an exactly adjusted shear wrench that takes the guesswork out of achieving the appropriate preload (tension created in a fastener when it is tightened).

Lots of feel that tension control bolts are more affordable since they require only one individual for their setup and inspection. For that reason, installation goes faster and with less mistakes. Stress control bolts need to follow specifications noted by the RCSC, as discussed before and any deterioration of the lubricant on the bolt will cause it to stop working inspection.

Galvanized bolts have a more durable lubricant on them as compared to the water soluble lube on the plain bolts, however you still must store them properly too. If something takes place to your stress control bolts out in the field, you can not simply re-lubricate them yourself. They need to be sent out back to the maker for them to make the corrective measures and retest them.