Knurling cap head screws 1.Material:steel 2.Size:M3-M64 3 ... .Finish:plain,zinc plating,passivate Feature: ISO4076 Knurling cap head screws A.Product specifications1.Bolt standard: DIN912, ANSI B18.3 ... stainless steel, brass CuZn3.Surface Finish:natural colour, polishing, nickel plated, chromated, zinc plating of various colour and etc ... charges under normal conditions. , ISO4076 Knurling cap head screws