... :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 ... States, Saudi Arabia, Europe,South Korea,Southeast Asia ,etc. DIN carbon steel flat washer 16mm