A screw refers to a screw (foreign name: Screw). It is a tool that utilizes the physical and mathematical principles of the circular rotation and frictional force of an object to gradually tighten ...
The production process of the tooth bar is the simplest, wire drawing, blanking, chamfering, typing, heat treatment, thread rolling, surface treatment
If you have the strength, please refer to...
Standard fasteners are divided into ten categories, and the selection should be determined according to the use occasions and functions of standard fasteners.
Determine category
1. Bolt: The bolt i...