Tension Control Bolts - - Atlantic Bolt Inc

Posted by Flood Brock on July 2nd, 2021

A Biased View of Tension Control Bolts - MSC Industrial Supply

A tension control bolt (TC bolt) is a strong bolt used in steel frame building. The head is normally domed and is not designed to be driven. Completion 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 specifically in steel frame building. Also called a TC bolt, they possess a domed head rather than a hex head because they are installed from a spline on their other end. This spline connects with a special power wrench for setup.

Stress control bolts come perfectly pre-lubricated by the maker. They are all set to be set up with a shear wrench. This wrench has an inner and an outer socket. The inner socket rotates the spline clockwise and the outer socket rotates the nut counterclockwise. Once the appropriate tension has been accomplished, the spline breaks off.

Tension Control Bolts - Hawaii Nut and Bolt Fundamentals Explained

There is simply one lot number involved in the tension control bolt assembly and they come specifically lubed. They are managed by the AISC, American Institute of Steel Building And Construction, and RCSC, Research Study Council on Structural Links. The single most unique feature of the stress control bolt is that it is installed with a precisely adjusted shear wrench that takes the uncertainty out of accomplishing the appropriate preload (tension created in a fastener when it is tightened).

Numerous feel that stress control bolts are more affordable because they need just one person for their installation and assessment. Therefore, installation goes faster and with less mistakes. Stress control bolts should comply with specs listed by the RCSC, as pointed out prior to and any destruction of the lube on the bolt will cause it to stop working examination.

Galvanized bolts have a more resilient lube on them as compared to the water soluble lube on the plain bolts, but you still should keep them properly too. If something takes place to your tension control bolts out in the field, you can not just re-lubricate them yourself. They need to be returned to the producer for them to make the corrective steps and retest them.