A2 Stainless Steel Screws

Frequently Asked Questions

What is the difference between A2 and A4 stainless steel screws?

A2 stainless (304 grade) is suitable for most external and marine applications. A4 stainless (316 grade) provides additional resistance to chloride corrosion and is specified for coastal locations or environments with chemical exposure.

Can A2 screws be used for all window installation applications?

A2 screws are suitable for most window and door installation applications. For highly corrosive environments such as seafront properties or industrial sites, A4 grade screws should be considered.