... washer , steel carbon washer , zinc plated washer , black washer , by sea , 8.8, 4.8 , box in carton , bulk FLAT WASHER,SPRING WASHER,PLAIN ... .surface: zinc plated , plain ,black , H.D.G ,5.transportation:by sea6.packing:bulk , box in carton , pallet.Our main products ... specifications or upon our customers' special requirements, in grades 4.8, 6.8, 8.8, 10.9, 12.9, A2-50, A2-70, and ...