HOLO-KROME 73078 براغي رأس مقبس 5/16-24 X 5/8" | محرك سداسي | سبيكة فولاذ أكسيد أسود حراري (100 / عبوة)

The black oxide finish on these screws looks clean and uniform, and they threaded into my jig without any binding. I used about half the box on a tooling setup and not a single one had a burr or rough edge.

The hex socket drive seated perfectly on my Allen wrench with zero wobble, and the thermal black oxide gave them a consistent, clean look across all 100. I used them to hold a jig together on the mill and not a single one stripped or rounded out.

The black oxide finish on these screws looks sharp and holds up well against oil on my shop bench. They seated cleanly into my fixture plate without any binding, and the hex drive grabbed every time. Solid choice for jig work.