Custom m1.2 cross drive nickel plated blue patch precision micro screw

Industry knowledge：

These common problems on the surface of small screws

1. Crack is a problem that small screws are prone to occur during processing and heat treatment, which is caused by excessive stress.
2. Cracks and streaks of raw materials, which are usually a thin straight line or curve extending longitudinally along the thread, polished rod and head.
3. Dents are shallow pits or depressions on the surface of small screws. They are chips or shear burrs, and may also be traces or impressions formed by the rust layer of raw materials, which cannot be eliminated in the casting and forging processes.
4. Cut marks are shallow grooves in the longitudinal or circumferential direction.
5. Other damages are caused by external influence during the manufacturing and transportation of small screws.