... ,GB,ANSI 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 request.6) Surface Condition ... )Accept moq for trial order12)Quick delivery time High quality square washer