براغي رأس مقبس نقطة كوب بلاستيكية 1/2-13 × 1/2 بوصة | فولاذ سبائكي (100/عبوة)

Finally a set screw that actually stays put under vibration—the nylon pellet really does the trick. Used these to lock down a jig on my mill and haven't had to retighten once.

Perfect fit for my indexing fixture—the nylon pellet really does protect the workpiece surface. Installed a dozen so far without any stripped threads, and the alloy steel feels plenty tough.

The nylon pellet tip on these set screws worked perfectly for adjusting a jig without marring the surface. They’re a solid upgrade from plain cup point screws I’ve used before, and the hex drive made installation in tight spots much easier. Good value for a full pack of 100.