Washer/DIN440/DIN9021 Specialiation : according the drawing from clientsSurface : plain ,zinc plated ,hot-dip galvanized ,hardenedMaterial : steel ,stainless steel ,copper ,brass ,mild steel ,(soft steel ) stainless steelPacking : Two kind of packing for youBulk and small box,or according your requirmentsStandard:DIN125A,DIN125B ,DIN126,DIN433,DIN449 ,DIN1440,DIN1441,DIN6916,DIN7349 ,DIN7989,2, ...