... : DIN ,ANSI/ASME, BS, GB, JIS, Non-standardMaterial: Carbon steel, stainless steel, alloys steel.Class: 4.8,8.8,10.9,12.9.etcSurface ... Korea, Southeast Asia, etc. Professional production and processing: nut, nuts, pin shaft, stud bolt,screws, bolts, non-standard bolt, non-standard ... etc. We can also process non-standard fasteners according to drawing.We can manufacture all kinds of fasteners, so if you ...