Overview
The Crown Automotive J4006956BLK is a black acorn style 1/2-20 lug nut, catalogued as a single nut with a key or wrench head. It is a wheel lug nut that clamps a wheel to its studs and carries a universal fit listing from the brand.
This nut has a black finish and a 1/2×20 thread, which must match the studs on your wheel. Its seat is acorn style.
Key features
- Black finish
- Acorn style
- 1/2×20 thread size
- Part number J4006956BLK with UPC 848399062250
Seat and finish care
Acorn seats are cone shaped and center the nut inside the wheel’s tapered bore. That centering keeps the wheel true to the hub and spreads clamping force evenly. A seat that does not match the wheel can look tight while still letting the wheel work loose, so the seat style is worth checking before the first installation.
A black finish protects the nut from the weather but can scratch during installation. Keep the nuts clean of grit before running them on, and avoid forcing them with an impact tool set too high. Dirt trapped between the seat and the wheel is a common reason for a nut to loosen.
Inspect the seats each time the wheels come off. Look for dents, flattened areas or a ring of wear where the nut bears on the wheel. Replace damaged nuts and any wheel with a worn seat area.
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | J4006956BLK |
| UPC | 848399062250 |
| Style | Acorn |
| Color | Black |
| Size | 1/2×20 |
| Lug nut type | Key or wrench |
| Count | 1 |
Vehicle fitment
Universal fit is the only fitment statement here; no year, make, model or trim is named. Use the stud thread and acorn seat to check fit.
Confirm your vehicle’s year, model and trim before ordering.
What’s included
One black acorn lug nut.









