Fasteners, Standard Parts, Nut manufacturer / supplier in China, offering SUS304 Hexagonal Socket Machine Screw with Half Thread Made in China, Factory Custom Half Thread Machine Screw Flat Countersunk Head Hex Socket Allen Key Stainless Steel Screws Made in China, Customized American Standard Fine Thread Black Oxidation Stud with Drilling Hole and Hexagon Flange Nut Sets for Big Oil Exploitation Machine Made in China and so on.