Stainless steel screws

The screws covered by this EPD are stainless steel screws that can be used for many applications.

Included in this group are wood screw construction screws, skirting screws, concrete screws, sheet

metal screws, façade screws, roofing screws, wafer head screws and wood connector screws. The are

four different types of screw head; countersunk, cylindrical, pan and wafer head.

There are two types of stainless steel screw grades, A2 and A4. Of the two, A4 stainless steel screws

have the highest corrosion protection (corrosion class C5), A2 screws have slightly lower corrosion

protection (C4).