7/8-14 × 1-1/4" براغي رأس أسطواني | محرك سداسي | ملولب بالكامل | فولاذ سبائكي مطلي بأكسيد أسود حراري (100 / عبوة)

The black oxide finish on these screws looks clean and professional, and they seated perfectly in my jig without any stripping. I've already used about 30 of them for a machinery rebuild, and the hex drive holds up well under torque.

I needed a bulk supply of socket cap screws for some custom jig work, and these fit the bill perfectly. The hex socket drive seated easily with my hex key, and the black oxide finish adds a nice layer of corrosion resistance.

The black oxide finish looks great on my jig fixtures and seems to resist rust so far. Threads are clean and the hex socket bites well without stripping. Shipping was fast but the box arrived slightly dented, though all 100 screws were accounted for.