Pin, M4x15

Exactly 4.00 mm as advertised, slid right into the jig without any force. Used it to align two small plates for drilling, and the fit was tight enough that my setup didn’t shift at all.

Arrived in perfect condition — the hardened surface is nice and smooth, no burrs. Slipped right into the bore with just the right amount of press fit for a clean assembly on my lathe project. Exactly what I needed for a cheap replacement part.

I needed a precise 4mm dowel pin for a jig I was building, and this one slid into the hole with almost no slop. The 15mm length was just enough to hold the alignment without being too long. Satisfied for the price.