These 3RACING 4mm purple aluminium lock nuts combine practical security with clear colour coding to make maintenance and assembly more efficient for model builders.
Designed around a common 4mm size, these nuts fit a variety of small fastenings across model car and truck components. They are suited to replacement work and routine rebuilds where vibration resistance matters.
Lightweight aluminium construction minimises added mass while offering durable fastening for regular hobby use. The purple finish speeds up part identification during checks and repairs.
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