Hex Nut Manufacturers introduces three ways to tighten high-strength bolts:
1. Torque method
According to the closed system in
which the torque M is proportional to the pre-tension, first, use a general
wrench to tighten the nut starter, and then use a wrench with a visible torque
value to tighten to the determined torque value.
2. Angle method
According to the close contact
between the layers, the conversion angle of the high-strength bolt is directly
proportional to the pretension of the bolt. When tightening, first use a short
wrench to screw the nut to the untransformed position, and then use a long
wrench to screw the nut to the determined position to reach the
pre-tension.
3. Unscrew the tail of the bolt
For torsion
shear-type high-strength bolts, this bolt has a special tail. When tightening,
use a spanner to cover the bolt and the tail of the bolt, one sleeve rotates
forward, and the other sleeve rotates. When the nut is tightened to a certain
level, the end of the bolt is broken. Because the depth of the notch at the end
of the bolt is determined by the closed relationship between the twisting torque
and the pre-tightening force, the corresponding pre-tension value is reached
when it is twisted off.
Through the above introduction, 2h Hex Nut Manufacturers hopes that you can simply refer to the content of this article in future use.

