Browse our full range of stainless steel fasteners in A2 304 and A4 316 marine grade at Duchy Fasteners. A2 stainless is ideal for general outdoor, food-safe and corrosion-resistant applications. A4 316 grade contains molybdenum for superior resistance to salt water and chlorides, making it the correct specification for marine, coastal and highly corrosive environments. Our range includes bolts, screws, nuts, washers, studding, eyebolts and coach screws. Material certification available on request. Supplied in trade quantities with fast UK delivery. Free delivery on orders over £75.