Black Dome Cap Nuts M3–M10 — A2 Stainless Steel DIN 1587
Black Dome Cap Nuts M3–M10 — A2 Stainless Steel DIN 1587
Why choose these Black Dome Cap Nuts
Our Black Dome Cap Nuts are manufactured from A2 (18/8) stainless steel and finished in a hard-wearing matte black coating — combining the corrosion resistance of stainless with a clean, recessive appearance that suits modern joinery, marine fit-outs and decorative ironmongery. Made to DIN 1587, the domed acorn profile fully encloses the bolt thread, protecting hands and clothing from sharp ends while giving a tidy, finished look.
Sizes available
- M3 — for light fittings and small craft assemblies
- M4 — joinery, electronics enclosures and brackets
- M5 — furniture, fencing and panel work
- M6 — handrails, signage and general fabrication
- M8 — marine fittings, balustrades and machinery covers
- M10 — structural and heavy-duty applications
Pack options
Choose a pack of 10 units for repairs and small projects, or 20 units for larger installs and trade work. Each nut is individually inspected before packing.
Typical uses
- Marine and boatbuilding — covering exposed bolt ends on deck fittings, cleats and rails
- Garden furniture, decking handrails and outdoor signage
- Black-finish ironmongery, gate hardware and architectural metalwork
- Bicycle, motorbike and trailer trim where a stealth black look is required
How to fit
Thread the dome nut onto a standard metric bolt or stud and tighten with a hex spanner or socket — the closed top means a torque wrench can be used without marking the cap. For best results, leave 1–2 threads protruding beyond a plain nut and cap with the dome nut, or use long enough threaded length to engage the full depth of the cap.
Delivery
Same-day dispatch on orders placed before 2pm, Monday to Friday. Free UK delivery on orders over £20. Tracked options available at checkout.
