Nut, M5

Grabbed a handful of these for my mini mill, and they fit the M5 tap perfectly without any wobble. The zinc coating feels nice and consistent, so they should resist rust in my humid garage. Exactly what I needed for basic jig building.

Threads cut perfectly clean on my lathe, no burrs or wobble when I torqued them down. Fit the M5 tap without any resistance, which is exactly what you want for a bench fixture.

The threading is clean and seats snugly on the bolt without any wobble, which is exactly what I need for my bench top setup. For a plain M5 nut, it's solid and consistent across the pack I got.