For model enthusiasts seeking dependable fastenings, the Yokomo Black M4 Aluminum Nylon Flange Lock Nuts are tailored for 4mm screws and precision applications. They secure axle assemblies and other key components while contributing a durable black alumite finish.
These nuts use a lightweight aluminum body to keep mass down and a nylon locking collar to maintain clamping under vibration. That combination makes them a sensible choice where preventing loosening is important without adding bulk.
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