Galvanized steel + EPDM washer
Stainless steel A2

Размір, ммТовщина просвердлюваної сталі, ммУпаковка, шт.
4,8 х 192,325000
4,8 х 292,323500
4,8 х 352,323200
4,8 х 502,322500
4,8 х 602,322500
4,8 х 702,321500
4,8 х 802,321500

The hexagonal roofing screws are made of hardened carbon steel or stainless steel.
They can be used for metal, plastic and fiberglass roofing.
There are two types of shapes of roofing screw ends, which are designed for fastening both to metal structures (drill shape) and to wooden structures (sharp shape).
The roofing screws have an attached EPDM sealing washer that prevents water penetration.