براغي ذات رأس مسطحة ومقبس سداسي HOLO-KROME 60150 5/8-11 X 2-1/4 بوصة | فولاذ سبائكي مع أكسيد أسود حراري (25 / عبوة)

The black oxide finish on these screws is really nice and clean, they threaded perfectly into my steel jig plate without binding. Exactly what I needed for precise assembly work.

I needed some heavy-duty fasteners for a jig I’m building, and these socket cap screws threaded in smoothly with no stripping. The 2-1/4" length gave just the right grip for my setup, and the black oxide finish looks clean and professional.

The black oxide finish on these screws is holding up well in my jig setup—no surface rust yet after a week of use. They threaded cleanly into tapped holes without any binding. Exactly the quality I expect for tooling applications.