براغي رأس أسطوانية 3/8-16 × 1-1/4 بوصة | رأس زرية محرك سداسي | صنع في الولايات المتحدة | ملولبة بالكامل | فولاذ سبائكي مؤكسد أسود حراري (150 / عبوة)

The black oxide finish on these screws matches perfectly with my existing tooling hardware, and the hex socket drive made installation a breeze. I’ve already used a dozen for a machinery frame repair, and they threaded in smoothly without any stripping.

I needed these for a jig I was building, and the fully threaded design let me cut them to exact length without any waste. The black oxide finish also seems really durable and hasn't chipped during assembly.

Finally a batch of button head screws where every single one threads cleanly by hand without any binding. The black oxide finish on these is consistent across all 150 pieces, no bare spots or uneven coating.