wide application, with outstanding features, good quality, resistant to high pressure 1. Applicable to: home appliances, electronics, electric appliance, ... aluminium,copper,brass,etc3,Production :Technology: Stamping,CNC Machining,Polishing,Die-casting,Welding,Rolling4,Precision: scope(min): + -0.01mm5,Size/Package: ... Market: US, Japan, India, Middle east, Africa, America, etc. machining screw part