1. bolt and nuts 2.Certification:ISO9001:2008 3.famous ... bowl washer; F436M washer; loading washer; tab washer and etc.2.Specification: all kinds of DIN; BS; NFE ... ,DIN961,DIN7990,DIN555 ETCFasteners include hexagon head bolts, hexagon head bolts for T-slot, cup head square neck ... electrical appliances, electronics, machinery, chemicals, metallurgy, automobile and other industries bolts and nuts screws