براغي ذات رأس أسطواني HOLO-KROME 72206 7/16-14 X 2-1/2" | سداسي داخلي | فولاذ سبائكي مؤكسد أسود حرارياً (50 / عبوة)

Used these to replace worn fasteners on a milling fixture and the black oxide finish hasn't chipped at all after a week of use. The hex drive seated perfectly in my driver without any wobble. Exactly the right thread engagement for my 2-inch plate.

Installed a dozen of these into a jig plate today and they seated perfectly with no binding. The hex drive took the torque evenly without any cam-out, which is exactly what I needed for this precision assembly.

The black oxide finish on these cap screws held up perfectly during my tooling setup—no galling at all. They threaded smoothly into the tapped holes without any binding. Exactly what I needed for a heavy-duty jig build.