... .standard:DIN 125 2.material: 45# 3.finishing:black DIN carbon steel flat washer 16mm1.Standards:DIN ,ANSI/ASME,BS,GB ... ,JIS,Non-standard2.Metail:Carbon steel,stainless steel,alloy steel.3.class:4.8,8 ... exported to many countries,such as United States, Saudi Arabia, Europe,South Korea,Southeast Asia ,etc. DIN carbon steel flat washer 16mm