3RACING 3RAC-NS40/BU 4mm Blue Serrated Locknut Set (8pcs) - Performance Fit  [3RAC-NS40/BU]

Secure Fastening with 3RACING 3RAC-NS40/BU

For model setup stability, reliable fasteners are essential. The 3RACING blue 4mm serrated aluminium locknuts offer a simple way to reduce loosening and keep suspension and wheels firm under load. They are a handy upgrade for anyone tuning handling or preparing for local club events.

Designed to Resist Loosening Under Vibration

The serrated face increases friction at the contact surface to help prevent the nut from backing off during rough runs. Their light aluminium body keeps unsprung weight down, which is useful for precise handling and quick steering response.

Where to Use These Locknuts on Your Model

These 4mm locknuts work across many common RC fittings, from hubs and wheel hexes to shock mounts and turnbuckles. The blue colour gives a tidy look to customised builds and helps identify upgraded hardware during maintenance.