Self drilling screw

Feature:
Self drilling screw
1>Standard: DIN7504
2>Head:Cross/Square Hole Pan head,Cross/Sunken/Half sunken head,Plum Blossom Nylon Head,Hex Nylon head,Cross/Square Hole Sunken head,Cross/Round head Washer,Wafter Head,Metal Head ,Hex Washer head
3>Finish: Zinc plated ,yellow zinc ,Flange,Darkrow,
4>Diameter: 3.5/4.2/4.8/5.5/6.3mm,6#,8#,10#12#14#
5>Length: 16-180mm.
6>Material: 1022
7>Packing:25kg/ctn or customed