... : M3-M76 3) Type:flat,plain,square,cup washer 4)High quality and low price 1) Standard: DIN, BS, IFI, JIS, ISO, ... Process Include: cold punching, and machining, also CNC machine, can do OEM order10)Quality assurance and competitive price in the market11) ... Accept moq for trial order12)Quick delivery time High quality square washer