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Marine Grade Bolts

Marine grade bolts and screws all offered in A4 grade stainless steel, with some available in the stronger A4-80 grade. Fully threaded and partially threaded marine grade bolts, fully and partially threaded machine screws and hex key drive cap heads and button heads. See also our Marine Hardware section for a selection of specialist marine fasteners and our A4 grade Hoseclips and Hoseclamps options.
Material Key
A4 Stainless Steel - also known as grade 316 or 18/8/3. A higher corrosion resistant, marine grade of stainless steel.
A4-80 Stainless Steel - identical corrosion resistance to A4-70 but with a higher tensile strength equivalent to that of 8.8 high tensile steel.