Stainless steel screw

What is a screw

A screw and a bolt (see Differentiation between bolt and screw below) are similar types of fastener typically made of metal, and characterized by a helical ridge, known as a male thread (external thread).
Screws and bolts are used to fasten materials by the engagement of the screw thread with a similar female thread (internal thread) in the matching part.
Hex Tap Bolt

Automatic detection of failure of missing bolts at the bottom of motor car

The bolts on the bottom brake shoe of the motor car play a key role in the overall train braking system.
The loss of bolts in the brake shoe will pose a serious threat to the safe braking and safe driving of the train. Taking bolt loss failure detection as an example, an online detection and identification algorithm for missing parts and components in high-speed trains is proposed, which provides a guiding method for fault diagnosis of key parts of high-speed trains.
Coach Bolt

Heat treatment process for high-strength bolts

Under different climatic conditions, the problem of substandard performance of fasteners used to fix wind turbine towers has gradually emerged.
The wind and sand in western Inner Mongolia are relatively large, and the erosion of wind and sand is also serious.

Fastener cold extrusion knowledge

The processing method of cold heading is to use the principle of plastic deformation of metal materials.
At room temperature, the cold metal wire is put into the mold cavity of the cold heading machine, and under a certain external force and speed, the metal wire is forced to produce plastic flow.

Commonly used anti-loose measures

Through the force analysis […]