Product Description
Black Metric A2 Stainless Steel Acorn Dome Nuts – DIN 1587
Black A2 stainless steel dome nuts provide a neat, rounded finish over exposed bolt and stud ends. Also known as acorn nuts or domed cap nuts, they feature a closed top and a hexagonal base for tightening with a spanner or socket.
Manufactured to DIN 1587, these nuts combine an A2 stainless steel body with a black finish. Available in metric coarse thread sizes from M3 to M12 for assemblies where appearance and corrosion resistance matter.
Specifications
- Standard: DIN 1587
- Material: A2 stainless steel
- Finish: Black
- Style: Hexagon dome / acorn cap nut
- Thread: Metric coarse, right hand
- Sizes: M3, M4, M5, M6, M8, M10 and M12
- Drive: External hexagon for a spanner or socket
Dimensions and Spanner Sizes
All dimensions are in millimetres. Overall height includes the dome.
| Thread Size | Thread Pitch | Spanner Size | Maximum Overall Height |
|---|---|---|---|
| M3 | 0.50 | 5.5 | 6.0 |
| M4 | 0.70 | 7.0 | 8.0 |
| M5 | 0.80 | 8.0 | 10.0 |
| M6 | 1.00 | 10.0 | 12.0 |
| M8 | 1.25 | 13.0 | 15.0 |
| M10 | 1.50 | 17.0 | 18.0 |
| M12 | 1.75 | 19.0 | 22.0 |
Available Quantities
Available individually or in packs of 5, 10, 20, 50 and 100. Select your required thread size and quantity from the options.
Fitting Advice
Use with a matching metric coarse thread bolt or stud. Check that the projecting thread fits inside the closed dome without bottoming out before the nut clamps the assembly. Overall nut height is not the available internal thread depth.
Start the nut by hand and tighten with the correct size spanner or socket. Use care to avoid marking the black finish. These are standard dome nuts without a self-locking insert.
Related Products
Browse our nuts and washers, or consult our thread data guide for help choosing the correct thread.
