براغي ضبط ذات رأس كوب 7/16-20 × 5/16 بوصة | فولاذ سبائكي (25 / عبوة)

I needed a set screw that wouldn't strip under heavy torque, and the alloy steel on these feels much tougher than the cheap ones I've used before. The cup point tip really bites into the shaft, holding firm even after a few adjustments.

The hex socket drive made installation in a tight spot under my lathe much easier than I expected. All six screws seated flush and have taken the vibration without loosening a bit.

These little set screws held rock solid when I used them to secure a pulley on a shaft; the cup point really digs in without slipping. As a 25-pack, it’s nice having spares for future adjustments.