有頭螺絲，10-32 x 1/2"，內六角

The socket head drove into my aluminum block without stripping, and the 10-32 threads caught perfectly with a standard hex key. Exactly what I needed for a tight assembly.

Bought a handful for a bench top jig and the 10-32 threading seated perfectly every time, no binding. The 1/2" length is just right for the thin plates I'm working with, and the socket head grips the hex key without slipping.

The threads are clean and the 1/2-inch length sits perfectly flush in my fixture plate, so it’s a solid pick for bench top work. No wobble when I torqued it down with a hex key, which is all I really need from a cap screw like this.