... main standard including: DIN, USS, SAE, NEF, GB, JIS …Plain washer: DIN 125, DIN 9021 ,DIN 1052 , DIN 440 , DIN ... , DIN 1441, DIN 7989, USS washer , Fender washer , Non-standard washerSpring washer: DIN 127B, DIN 7980...Square washer: DIN 434, DIN435, DIN 436 ... Quality certification or what you wantPackage: 25/20kg, bulk: small box into cartons and then into pallets, usually 20' containersPayment terms ...