When you’re working on projects exposed to the elements—especially in coastal or marine environments—standard fixings simply won't last. Our collection of A4 316 marine-grade stainless steel wood screws is specifically designed to withstand the harshest conditions without rusting or degrading. Unlike standard A2 stainless, the higher nickel content and the addition of molybdenum in A4 grade provide superior protection against salt spray and chlorides, making these the go-to choice for boat building, seaside decking, and outdoor joinery.
In this range, you’ll find traditional slotted drives, including both flat countersunk and raised countersunk options (DIN 95). These are particularly popular for restoration work and high-end woodworking where a classic, heritage aesthetic is just as important as structural integrity. The slotted head offers a clean, vintage look that modern pozi or torx drives often lack, making them ideal for traditional boat interiors or period property repairs.
We stock a variety of gauges and lengths to suit different timber thicknesses and load requirements. By choosing marine-grade wood screws from Duchy Fasteners, you’re investing in professional-quality hardware that won't bleed rust streaks down your timber or snap under environmental stress. Whether you are securing trim on a yacht or building garden furniture in a salt-heavy atmosphere, these screws offer the longevity you need to ensure the job is built to last.
