... 1) Size: M3-M76 2) Type:flat,square,slotted,cup washer 3)Finish: Zinc Clear, Zinc Yellow, Black,galvanized,plain,H.D.G ... Alloy Steel, Stainless Steel, Brass, Aluminum, etc.4) Finish: Zinc Clear, Zinc Yellow, Black, Nickel-plating, Tin-plating, Chrome- plating, Dacromet ... Hot-dip Galvanizing.etc.5) Shape: round , square , curved , taper, cup, bowl or according to your request.6) Surface Condition: remove ...