Black drywall screw

1)Material: carbon steel Q195/ C1022A

2)Surface:black/gray phosphate/   galvanized zinc

3)Length:16mm- 152mm

4)Diamater:3.5mm-4.8mm( 3.5  3.8  3.9  4.0  4.2  4.8mm)

5)Thread: fine thread/ coarse thread

6)Head: Bugle head

7)Packing:500/1000pcs per box then in carton,or bulk packing or as customer request