Roofing self-drilling screws (Unslot indented hexagon head withbonded EPDM washer SDS)

Material: Hardened Carbon Steel C1022A

Core hardness: 300-460HV

Surface hardness: min 450HV

Surface Treatment: Zinc plated, Painting.

Standard: DIN, ASTM

Certification: ISO9001, CE

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

Washer: EPDM, Conductive

Drilling point:#1

Painted head: RAL 1014, RAL 5002, RAL 7004, RAL 3003, RAL 5005, RAL 8017, RAL 3005, RAL 6002, RAL 8019, RAL

3011, RAL 6005, RAL 9003.