The following items will work as a direct replacement

FT Nyloc Wheel Hex Nuts
This is discontinued. Perhaps this alternate item will work for you: #81082.
This part fits the following vehicles
- RC8
- RC8T
- RC8Te
- SC8
- SC8e
- RC8B
- RC8Be
- RC8.2
- RC8.2e
- SC8.2e
- RC8B3
- RC8B3e
- RC8T3
- RC8T3e
- Nomad DB8 Limited Edition
This part fits the following other parts
- #80926 - RC8B3 and RC8B3e Kit Bundle