stainless steel washers 1.size M2-M100 2.standard:DIN128, non-standard 3.material: SUS304,SUS316 4.Black Oxide,Zinc plated. ... . Standards1. ISO, DIN, AS/NZS, GB, ANSI and BS2. Material2. Stainless steel, SUS304,SUS316 and so on.3. Size3. M2-M1004 ... high quality bolts, nuts, screws, drawn wires ,heatsink and other non-standard specific fasteners, which comply with GB, ANSI, DIN, UNI ...