براغي تثبيت سداسية برأس كوب 1/4-28 × 3/16 بوصة | فولاذ سبائكي مطلي بالزنك (500/عبوة)

Finally got around to installing these in a fixture that needs frequent adjustment – the hex socket drive makes tightening and loosening a breeze even in cramped spots. The cup point grips firmly without stripping the threads. Exactly what I needed for a precise setup.

Installed these in a custom fixture plate and the hex socket drive let me get them flush without stripping. The zinc plating seems decent so far, no rust after a week of assembly work.

Finally got these for a CNC jig I'm building and the cup point grips perfectly on the shaft. The zinc coating seems consistent across all 500 screws, which I appreciate for corrosion resistance.