NUT M4 / LOCKING FASTENERAlways OEM - Nothing generic, "equivalent" or off-brand.
A fastener is a hardware device that mechanically joins or affixes two or more objects together. In general, fasteners are used to create non-permanent connections (those that can be removed or dismantled without damaging the adjoined components).
A nut is a type of fastener with a threaded hole. Nuts are almost always used in conjunction with a mating bolt to fasten multiple parts together. The two partners are kept together by a combination of their threads' friction (with slight elastic deformation), a slight stretching of the bolt, and compression of the parts to be held together.
Click Image to Zoom In