Stop nut M4

Tiny parts like this are so easy to misplace, so having multiple M4 nuts in one pack means I won't run out mid-project. The threads are clean and catch perfectly on the bolts I'm using for my RC chassis.

Bought the larger pack for a model build and the thread catches cleanly without stripping, even on thinner rods. They hold tight once seated, which is exactly what I needed for assembly work.

Bought the 50-pack for a model train project and they threaded on cleanly without stripping. The nylon insert actually grips, so nothing rattles loose on the chassis anymore.