Stainless steel screw nut manufacturer / supplier in China, offering 1/2" X 70 mm B7/A194 Fluorocarbon Coating Stud Bolts with Nuts 2PCS HDG Finish for Heavy Duty Applications, DIN6799 Spring Steel E-Style Circlips with Metric Sizes, Circlip Internal Circlip Retaining Ring DIN472 D1300 J and so on.