... kinds of bolts( hexagon head bolts, coach bolts, carriage bolts, hanger bolts, etc ), kinds of screws( self-drilling screws, lag ... mudguard washers and so on. Our main material is iron steel, stainless steel, brass, and aluminums. We also produce Non-standard. ... wholeheartedly. WALLPLUG WITH SCREW 1. Nylon wallplug with screw2. Steel wallplug with screw3. Rubber wallplug with screw4. With pen-screw ...