... 2) Size: M3-M76 3) Type:flat,plain,square,cup washer 4)High quality and low price 1) Standard: ... Mechanical Galvanizing, Hot-dip Galvanizing.etc.5) Shape: round , square , curved , taper, cup, bowl or according to your ... Process Include: cold punching, and machining, also CNC machine, can do OEM order10)Quality assurance and competitive price ... trial order12)Quick delivery time High quality square washer