3RACING 3RAC-NS40/BU 4mm Blue Serrated Locknut Set (8pcs) - Track and Trail  [3RAC-NS40/BU]

Keep Critical Joints Tight with 3RACING 3RAC-NS40/BU

The reliability of small fixings is key to consistent model performance. The 3RACING blue 4mm serrated aluminium locknuts are a straightforward way to improve joint retention on both track cars and trail rigs. They are compact, light, and simple to fit during routine maintenance.

Improved Retention for Demanding Use

Serration on the nut face increases friction under load, helping prevent self-loosening from vibration. Their aluminium construction reduces added weight, preserving handling characteristics while improving fastener security.

Flexible Use Across Common RC Parts

These 4mm locknuts are useful on wheels, suspension links, shock mounts and other threaded connections where secure clamping matters. The blue anodised finish also makes it easier to spot upgraded hardware when you inspect your model.