SS304 / SS316 bolts, nuts, screws, washers and anchors — DIN / ISO / ASTM standards

DonMo Hardware manufactures a comprehensive range of stainless steel fasteners in SS304 (A2) and SS316 (A4) grades. Our fastener line covers hex bolts, hex nuts, machine screws, self-tapping screws, washers and anchors in metric and imperial sizes.
All standard parts are produced to DIN, ISO and ASTM specifications with full dimensional inspection. We maintain ready stock for popular sizes and offer custom lengths, threads and finishes for OEM orders.
Stainless steel fasteners are widely used in construction, marine equipment, chemical plants, food machinery, solar installations and outdoor furniture where corrosion resistance is essential.
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DIN933 / DIN931, M3–M24, full or half thread, SS304 / SS316.
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Wood screws, sheet metal screws, self-drilling screws, various head types.
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Flat washers (DIN125), spring washers (DIN127), lock washers, fender washers.
Request Quote →General-purpose stainless steel. Good corrosion resistance for indoor and mild outdoor environments.
Marine-grade stainless steel with molybdenum. Superior corrosion resistance for coastal, chemical and marine applications.
Grade 4.8 / 8.8 / 10.9 / 12.9. Available with zinc plating, hot-dip galvanizing or black oxide finish.
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