... washer; bowl washer; F436M washer; loading washer; tab washer and etc.2.Specification: all kinds of DIN; BS; NFE; ASTM ... ,DIN985,DIN960,DIN961,DIN7990,DIN555 ETCFasteners include hexagon head bolts, hexagon head bolts for T-slot, cup head square neck bolt, ... aerospace, energy, electrical appliances, electronics, machinery, chemicals, metallurgy, automobile and other industries bolts and nuts screws