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A4 (AISI 316) cap nut for protecting exposed thread ends in metric assemblies exposed to more corrosive environments. Sold per piece.
Choose a size below and add it to your quote. We typically reply within one business day.
A4 (AISI 316) hexagon cap (dome) nuts to DIN 1587 for covered, finished thread ends in corrosive environments.
Use A4 cap nuts on coastal balustrades, marine fittings, pool surrounds, and exterior architectural fixings where both appearance and chloride resistance matter. Match with A4 bolts or rod and verify thread protrusion fits within the dome. Available metric sizes are in the table above.
Sold per piece with a 50–100 piece minimum order depending on size. Include sizes and quantities in your quote request.
A4-70 / AISI 316
DIN 1587
Stainless Steel
Cap Nut
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