Product Description
BA Solid Brass Acorn Dome Cap Nuts – 2BA and 6BA
Solid brass dome cap nuts with British Association threads, available in 2BA and 6BA sizes. Also known as acorn nuts or cover nuts, their closed domed tops cover the ends of mating screws or studs to provide a neat finished appearance.
The hexagon base allows tightening with a suitable spanner or socket. These nuts are useful for model engineering, restoration and general assemblies requiring BA threaded brass fixings.
Specifications
| Product type | Acorn dome cap nut |
|---|---|
| Material | Solid brass |
| Thread system | British Association — BA |
| Available thread sizes | 2BA and 6BA |
| Nut style | Hexagon base with a closed domed top |
| Drive | External hexagon |
Available Sizes
| Thread size | Approximate threads per inch |
|---|---|
| 2BA | 31.4 TPI |
| 6BA | 47.9 TPI |
4BA is currently unavailable. Select from the sizes shown in the product options.
Pack Quantities
Available in packs of 5, 10, 20, 50 and 100 nuts. Select the required thread size and pack quantity from the options above.
Typical Applications
- Model engineering and small mechanical assemblies.
- Restoration of equipment using BA threaded fixings.
- Decorative brass fastening details.
- Covering exposed screw or stud ends.
Fitting Information
Use with a matching BA screw or stud. BA threads are not interchangeable with metric, UNC or UNF threads, even where the diameters appear similar.
Check that the projecting thread fits within the closed dome. The nut must seat against the component before the screw or stud reaches the inside of the cap.
Use a correctly fitting spanner or socket and avoid overtightening. Please check with us before ordering if the spanner size, overall height or usable internal depth is critical to your assembly.
