1. Material: 1022 Carbon Steel.
2. Standard: GB, ISO, DIN, ANSI, JIS, UNI or Customized.
3. Surface Treatnent: Zinc Plated, Yellow Zinc Plated, Nickel Plated, Black or Grey Phosphated.
Hex Hexagon Washer Flange Head Self-Drilling Screw with EPDM Rubber Washer