EN ISO 7380-1 Form A: Hexagon socket button head screws.
EN ISO 7380-2 Form B:Hexagon socket button head screws with collar.
Characteristic(s)
Material:
Steel, stainless steel A2 or stainless steel A4.
Version:
Steel grade 10.9, bright or electro zinc-plated.
Stainless steel A2-70, bright.
Stainless steel A4-70, bright.