HOLO-KROME 72278 براغي رأس مقبس 5/8-11 × 2-3/4" | محرك مقبس سداسي | فولاذ سبائكي بأكسيد أسود حراري (25/عبوة)

I needed some serious fasteners for a jig I was building, and these alloy steel screws with the thermal black oxide finish held up perfectly under heavy torque. The threads engaged smoothly, and the hex socket drive didn't strip at all. Really solid product for the price.

Needed high-strength fasteners for a press tool rebuild, and these socket caps threaded smoothly into the tapped holes without any binding. The black oxide finish gives them a nice grip for the hex key, and the whole lot felt solid during assembly.

Used a full box on a jig build for the shop, and every single one threaded in smoothly and sat flush. The black oxide finish gives them a nice, consistent look, and they held up well under the impact wrench. Only small complaint is the box was a bit tight to reseal.