Methods for Tightening Bolts

Bolts are a prevalent type of fastener. So how should we tighten bolts? As a professional fastener manufacturer, Xinchi is happy to share the methods for tightening bolts.

Three Methods for Tightening Bolts

Torque Tightening Method: The principle is that there is a certain relationship between the magnitude of the torque and the axial preload. This method is simple and intuitive to operate and is currently widely used.

Angle Tightening Method: The relationship between the rotation angle and the total elongation of the bolt and the loosening of the tightened components is approximately proportional. Therefore, a specified rotation angle can be used to achieve the predetermined tightening force.

Yield Point Tightening Method: The theoretical goal is to tighten the bolt just past the yield limit point.

Principles of Bolt Tightening Sequence:

Tighten in the order of first the center, then the two sides, diagonally, and in a clockwise direction, step by step.

Generally, tighten in two stages: the first step is to tighten to about 50% of the torque; the second step is to tighten to 100% of the torque.

The end of the bolt should protrude 1 to 3 threads beyond the nut.

XINCHI is a trustworthy fastener company, especially in furniture nuts. We have a factory,  founded in 2007. And we are the designated fastener supplier to“STAPLE”. As a trusted fastener supplier,  XINCHI can offer a wide range of high-quality fasteners, including nuts, screws, bolts, rivets, washers, etc. If you want to know more about fasteners or want to wholesale fasteners, please feel free to contact us. And then our experienced and expert service team will reply to you as soon as possible.