Gypsum screw for metal
Black phosphate drywall self drilling screw or gypsum screws for metal
Material: C1022A
Diameter: M3.5/4.2(#6/#8)
Length: 25mm-75mm(1″-3″)
Thread: Fine thread
Packaging: 500pcs/800pcs/1000pcs per box,12-20boxes/carton,or in bulk,25kg/carton or as per customer requirement
Finish: black/gray phosphated, zinc plated
Usage: widely use for sheet metal fasten or gypsum screw board