This Tamiya flat-head screw is intended for TRF421 hop-up assemblies and similar small component attachment points. It is the same 3x6mm countersunk profile commonly used in those hop-up packs and kit variants.
Purpose: These screws secure small structural parts such as chassis plates, shock towers and gearbox mounts on TRF421-compatible machines. They are intended for replacing lost or corroded fasteners and for general upkeep of tuned components.
Fitting advice: Use the original threaded bosses or compatible inserts, and tighten to a secure feel without stripping threads. Align mating parts before the final turn to preserve component geometry and fit.
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