Custom M1.2 M1.4 cross drive nickel plated red patch precision screw

Industry knowledge：

Grade 10.9 high strength screw

Generally speaking, the strength of screws is different between high strength screws and ordinary screws. High strength screws can bear more force than ordinary screws. The material of grade 10.9 screws produced by our factory is SCM435 alloy steel. In fact, the hardness of the material itself is not so high strength. Therefore, after the screws are produced, they have to undergo heat treatment to achieve grade 10.9 high strength.