1. bolt and nuts 2.Certification:ISO9001:2008 3. ... DIN961,DIN7990,DIN555 ETCFasteners include hexagon head bolts, hexagon head bolts for T-slot, cup head square neck ... hollow wall anchor,coupling nut,self drilling screw,hex washer flange,bugle phillips,wood screw,pan phillips ... electrical appliances, electronics, machinery, chemicals, metallurgy, automobile and other industries bolts and nuts screws