the mass-produced component & part are as weld bolt/nut, elevator bolt (fang/norway/euro/pronged), conveyor fastener (plate/oval), hollow bolt,tent peg& stake,locking bolt, Eyebolt/nut, T/U/J/L-Bolt, Micro screw,l ifting anchor, double-head stake, bearing/locking Ring, Rivet, Insert,Casing, and other aluminum,steel, stainless and brass components,etc;