Dome nuts finish a bolt end with a closed cap that covers the thread, protecting people from sharp edges and the thread from damage. We stock DIN 1587 in Umm Al Quwain from M3 to M30 in stainless A2 / A4, zinc-plated steel and brass.
A dome nut (cap nut, acorn nut) is a hex nut with a domed closed end. It is used on exposed bolt ends in handrails, playground equipment, furniture, vehicle bodies and architectural fixings, both for safety and for a clean finish. Because the cap is closed, the bolt must not project beyond the nut thread depth — length is critical. High (DIN 1587) and low (DIN 917) forms are available.
Applications
- Handrails, balustrades and glass fixings
- Playground and public furniture
- Bus, truck and trailer bodies
- Signage, façade and canopy fixings
- Machine guards and covers
- Marine and pool fittings (A4)
Standards, grades & finishes
Nuts to DIN 1587 (high form) and DIN 917 (low form), stainless A2-70 / A4-80 to ISO 3506-2, carbon steel class 6 zinc plated, brass CW614N, threads ISO 965 6H. Two-piece (welded cap) or one-piece (solid) construction. Polished stainless on request.
This item is imported from approved mills and held in stock in our Umm Al Quwain warehouse alongside the anchor bolts, studs and plate washers we manufacture ourselves, so complete bolt sets ship from one source. Tensile, hardness and chemical testing is carried out by independent UAE-accredited laboratories, and EN 10204 3.1 certificates are issued with every batch. We supply across the GCC, MENA and Africa.