There are many matters needing attention in the selection of non-standard screw molds. Do you know what are the precautions for the selection of non-standard screw molds? Today weigao Bolt Factory will explain to you the precautions for selecting non-standard screws.

The selection of the heading die material is very important. This is mainly because the life depends on the quality of the tungsten steel inside. The non-standard anti-theft screw adopts authentic spring protection tungsten steel to effectively ensure its life. The thread rolling board needs to have a very high hardness. , Wear resistance, sufficient strength, impact and fatigue resistance are also strong.
 
The hardness of the working part of China Nut should be 59HRC. If it is greater than 62HRC, tooth chipping will occur. If it is less than 59HRC, then there will be wear and tear, which will affect its service life; the quenched martensite is less than grade 3. The working surface must not have parts with decarburization and low hardness, and the surface of the thread rolling board must not have nicks, cracks and other defects that affect the performance, otherwise a series of problems will occur, which will affect the normal use in the later stage.