Kyosho 1-N3043NA-S 5-Pack M3x4.3 Aluminium Silver Nylon Lock Nuts  [KY-1-N3043NA-S]

M3 nylon locking nut overview

The Kyosho 1-N3043NA-S nut is supplied in a set of five and specified at M3x4.3, featuring a nylon locking insert beneath an aluminium silver exterior. It is designed to secure small-scale components on model cars, planes, and other hobby assemblies, reducing the risk of threads working loose in service.

Fitting is simple: match with an M3 threaded bolt or shaft, position the nut against the mounting surface, and tighten to the recommended torque for your model hardware. The nylon core increases resistance to vibration-related backing off, while the aluminium surface improves wear resistance and helps against mild corrosion.

Apply this nut where a compact locking fastener is needed, such as on control linkages, brackets, or accessory mounts. It is not intended for mismatched thread sizes or heavy industrial applications.