1.screw bolts 2. for appliance spare parts,eg.furniture,electronic , machines 3.finished:zinc plated 4.hot sale screw bolts,machine parts,spare parts, precision parts1. For appliance spare parts,eg.furniture,electronic and eletrical appliance,automobile, sport equipment,medical equipment.2. materials: aluminum,stainless steel, copper , alloys,mild steel,middle carbon steel3. finish: plain,black, ...