Self drilling screws,Drywall Bugle head, fine thread,drilling point

Material: Hardened Carbon Steel C1022A

Drive type: Philips, Torx, Hexagon socket, Square

Core hardness: 300-460HV

Surface hardness: min 450HV

Surface Treatment: Phosphated, Zinc plated

Standard: DIN, ASTM

Certification: ISO9001, CE

Non-standards: OEM is available if you provide the drawing or sample