Hexagon Washer head self-drilling screw

1.Material: Carbon steel C1022
2.Feature: Hexagonal head, drilling point, with or without rubber washer or EPDM washer
3.Standards: DIN.ANSI,ISO,JIS,Special Design
4.Finished: galvanized (blue/white/color) or Phosphated
5.Diameter:4.8-6.3mm
6.Length: 19-150mm
7.Package: small box packing or as required
8.Usage: widely used in soft steel, construction, industry, daily life or other metals to fasten metal or  other hard materials