Special wrenches are needed.
Tension control bolts disadvantages.
The inner socket rotates the spline clockwise and the outer socket rotates the nut counterclockwise.
It is one of the most commonly used fasteners for high strength applications even preferred over large hex bolts.
The head is dome shaped and is not designed to be driven with normal tools.
There are several disadvantages to the twist off system.
Tension control bolts tc bolts or twist off bolts are now the most popular choice in high strength structural bolting and formally recognized by the aisc american institute of steel construction and the rcsc research council on structural connections as an approved installation method.
Tension control bolts are the most commonly used fasteners for steel to steel fastening of high strength applications.
This wrench has an inner and an outer socket.
Tension control bolts come perfectly pre lubricated by the manufacturer.
A tension control bolts consists of 1 bolt 1 nut and 1 washer pre assembled and there for they are.
Once the correct tension has been achieved the spline breaks off.
Downloads to incorporate our range of fasteners and shear wrenches into designs cad drawings technical and dimensional details along with quality certificates and installation documents are available to download.
Tension control bolts also known as tc bolts are used for high strength steel to steel fastening.
Tension control bolts ltd offer a full range of shear wrench sales hire and repair services.
Also known as tc bolts these bolts have a dome shaped head and they can t be driven using any normal tools working with tension control bolts requires a special type of wrench.