special washer 1) ANSI,ASME,DIN,BA,NFE,JIS, etc. 2) Carbon ... . 4) Carton,pallet This is a special washer.1) Specification: ANSI, ASME,DIN,BA,NFE,JIS,and non-standard.2) Material: carbon steel ... . 4) Package: boxes + cartons + pallets; cartons + pallets; as buyers' requirements special washer