... Passivate, Oxidation, Phosphorization, Radiant PlatedStandardsJIS, ANSI, DIN, GB, ASME, BSW, ISOProcess Heading, Threading, Angle-cutting ... -slipping patchCategory we can process1. by componentsBolts, Screw bolts/Studs, Nuts, Tapping screws, Wooden screws ... , Countersunk, Fillister, hexagon, Hexagon washer head, Hexagon socket button head and etc.3. by type of drive ... com.cn SS Hex Socket Nut JL-SCR-010