When your project demands the highest level of corrosion resistance, our A4 AISI 316 stainless steel self-tapping screws are the industry standard. Unlike standard A2 stainless, A4 grade is specifically designed for marine environments, coastal locations, and industrial settings where exposure to salt spray or chemicals is a constant factor. These screws are built to last in the toughest conditions without rusting or degrading.
We stock a versatile selection of drive types and head styles to suit every application. Whether you prefer the classic slotted drive, the high-torque security of a 6-lobe Torx drive, or the ubiquitous Pozi drive, we have you covered. Our range includes countersunk heads for a flush finish in timber and metal, as well as pan heads for when you need a larger clamping surface area.
These self-tappers are ideal for boat building, architectural metalwork, and outdoor installations near the coast. By choosing DIN-standard fasteners, you’re ensuring precision and reliability for your trade or DIY projects. With competitive trade pricing and rapid UK-wide shipping, you can get the marine-grade fixings you need delivered straight to your site or workshop without delay.
