... .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:4.8,8.8,10.9,12.9.etc4.Surface:plain ... States, Saudi Arabia, Europe,South Korea,Southeast Asia ,etc. DIN carbon steel flat washer 16mm