براغي تثبيت ذات رأس كوبي مقاس #10-24 × 1/4 بوصة | فولاذ سبائكي (1000/عبوة)

The cup point really bites into the shaft, so my pulleys haven't budged since I torqued them down. For a thousand alloy steel screws at this price, the hex drive is clean and the threads are consistent.

I was a bit skeptical about buying a thousand of these, but the cup point grips really well on a small pulley shaft I was working on. The alloy steel feels solid, and every screw I've used so far has driven smoothly without any stripping.

The hex drive on these screws made tightening them into a pulley shaft much easier than with a standard slot. I used them on a small gear assembly and they held firm without stripping out. Will definitely order more for future projects.