براغي مقبس بنقطة كوب من النايلون 1/2-20 × 1/2 بوصة | فولاذ سبائكي (100/عبوة)

Exactly the right fit for those soft materials where you don't want to mar the surface. The hex drive makes cinching them down in a tight spot much easier than a standard slotted screw.

The nylon pellet tip bites into the shaft without mangling the threads, and the hex socket lets me torque them down in spots where a wrench won't fit. Hundred-count box means I've got plenty for spares, and the alloy steel feels solid for the price.

These set screws fit perfectly in my jig and the hex drive made adjusting them in tight spots much easier than I expected. The cup point holds the nylon pellet securely without slipping. Exactly what I needed for this project.