CNC Machining Parts, Metal Stamping, Casting Parts manufacturer / supplier in China, offering Customized High Precision Stainless Steel Hexagonal Drill Tail Screw DIN7504K Self Tapping Screw, OEM DIN7504K Hex Flange Head Self Drilling Screw Stainless Steel Self Tapping Screw, Stainless Steel SS304 Serrated External Tooth Safety Lock Washer and so on.