... tolerance can be met 3:OEM acceptable. 4:ISO9001 Screw, Rivet Specifications: 1.High quality control,Competitive price, Fast delivery 2 ... , wire EDM, etc)Various materials(stainless steel, aluminum, brass, steel alloy, plastic etc) Finish: Zinc plated, Chromated plated, Electrophoresis, Powder coating ... .02 griding machine2 ≤0.02drilling machine10≤0.02 Screw and Rivet