A tension control bolt (TC bolt) is a heavy duty bolt used in steel frame construction.
The head is usually domed and is not designed to be driven.
The end of the shank has a spline on it which is engaged by a special power wrench which prevents the bolt from turning while the nut is tightened.
When the appropriate torque is reached the spline shears off.
Assembly: 1 bolt, 1 flat washer, 1 hex nut
Size: M16/M20/M22/M24/M27/M30
Length: as per size
Material: steel
Grade: 10.9s
Finish: black/zinc plated
Technical info: GB/T 3632-2008
