براغي رأس مقبس 1/4-28 × 1/4" | محرك مقبس سداسي | صنع في الولايات المتحدة | سبيكة فولاذ بأكسيد أسود حراري (2500 / عبوة)

Installed these in a jig yesterday and the hex socket drove perfectly without any cam-out. Having 2500 in a package means I won't run out mid-project, and the consistent threading made assembly smooth.

I needed a bulk order of black oxide screws for jig building, and these 1/4-28 socket caps are uniformly threaded and drive perfectly with a hex key. The 2500-count package should easily cover my next several machinery projects without reordering.

The hex socket drive makes tightening these into my jig fixtures so much easier than a slotted head. I've used a hundred or so already and the black oxide finish looks consistent piece to piece.