براغي تثبيت بنقطة كوب 1/4-28 × 3/8 بوصة | فولاد سبائكي مطلي بالزنك (500 / عبوة)

Bought these for a jig I keep tweaking, and the hex socket drive lets me get a wrench in where a regular screwdriver never fits. The cup point bites into the shaft without marring it, and all 500 arrived clean and uniform.

Got a machine setup that rattles loose every time - these cup points bite deep and stay put. The zinc plating's held up fine so far, and the hex socket drive makes them easy to torque down even in awkward spots.

Packed 500 to a bag and every one has a clean, deep hex socket that took my driver without slipping. Installed a dozen on a jig and they all threaded in smoothly—no duds in the batch. Exactly what I needed for replacing worn set screws on machinery.