Carbon steel screws are standard within the construction industry. They are strong enough to drill through steel and aluminium, making them perfect for roofing and cladding applications. They have good corrosion resistance, particularly when coated with our specialist coatings. Their magnetic properties also make them easy to use with a magnetic socket.
Stainless Steel A2
Our stainless steel fasteners have a better corrosion resistance than our carbon screws, which significantly increases their durability. Often they have a carbon drill tip, making them a bi-metal fixing. Carbon it is a harder metal and drills through steel better. As this portion of the screw is not exposed to the outside of a building or in contact with the substrate following drilling, it does not affect the fastener’s longevity.
Stainless Steel A4
Our stainless steel A4 fasteners have the maximum corrosion resistance, because they are marine-grade. This increases their durability in harsh environments such as coastal areas and chemical plants. Like stainless steel A2, they have a carbon drill tip, making them a bi-metal fixing.