... hexagon nuts, lock nuts, hex coupling nuts, flange nuts, square nuts, etc.), flat washers, spring washers, mudguard washers and ... machinery zinc plated, etc. We own a intellective group with full of passion and energy, nearly about 300 workers, ... advice wholeheartedly. WALLPLUG WITH SCREW 1. Nylon wallplug with screw2. Steel wallplug with screw3. Rubber wallplug with screw4. With pen-screw/hook/eye ...