Hex Bolt 10.9 Grade Structural Steel Bolt/Nut & Gasket/A325 Torsional Shear Bolt

High strength torsional shear bolt, specification M24*85, material 10.9S

M24 refers to bolt size

85 finger screw length

10.9S refers to the strength level

Torsional shear bolts can be divided into initial tightening and final tightening. The initial tightening can be carried out with torque wrench or impact wrench, and the final tightening must be carried out with torsional shear wrench.

The torsional shear bolts are M16 M20 M22 M24 M27 M30 and other national standard bolts

The length varies from 50 to 130

Different types of bolts need different types of torsional shear wrenches. Generally, the larger the bolt, the slower the speed, and the bolt after the initial tightening is faster than the direct final tightening.

Torsional shear type high strength bolt, why screw off the plum head?

High strength torsional shear bolts must be installed with electric torque wrench. Only when the torque meets the requirements, the plum head of the high strength bolt will be unscrewed, so as to ensure that the bolt used can reach the necessary preload to ensure the performance.

So in the project, we can determine whether the high-strength bolt plays a role by checking whether the plum head is still in, and the high-strength torsional shear bolts are disposable for this reason.