O.S. Engine OS55500005 Nord Lock Washer M6 for RC Fasteners  [OS55500005]

Nord Lock M6 Washer Overview

This Nord Lock style M6 washer from O.S. Engine OS55500005 is an RC-scale locking washer created to keep M6 fasteners secure where vibration and shock would otherwise cause loosening. It suits engine mounts, motor and gearbox fixings, and other high-vibration attachment points found on RC cars, buggies, and nitro or gas-powered models.

Installation is simple: place the matched washer pair on a clean, flat mating surface with the wedge faces opposing, then fit the M6 screw or nut. The wedge-lock mechanism converts small bolt rotation into retained tension under vibration, so correct seating and matched orientation are essential for consistent performance. Do not use on damaged threads or uneven contact areas.

For tuning and maintenance the washer acts as a preventative measure rather than an adjustment item: fit it where repeated loosening affects handling or reliability, such as engine mounts, motor brackets, or gearbox fastenings. It works alongside correct thread engagement and proper torque practice to cut down on repeated re-tightening during running sessions.