Order M4 Threaded Insert Threaded Wood Insert Nuts - M4, M6, M8 Sizes, Hex Drive (Type E) For Strong Screw Fixings In ...

These are impact nuts (also called insert nuts or rivet nuts) for metric screws, ranging in size from M4 all the way up to ...

There’s a variety of ways to add threaded holes to 3D printed objects. You can tap a hole, but the plastic isn’t always strong enough. Nut traps work, but aren’t very attractive and can be difficult ...