HOLO-KROME 60162 براغي مقبس 3/4-10 × 2 بوصة | رأس مسطح محرك مقبس سداسي | سبيكة فولاذ معالجة حرارياً بأكسيد أسود (25 / عبوة)

Installing these into a jig fixture was straightforward—the black oxide finish held up well against the wrench without any slipping. Used a set of four on a repair job and the threads engaged smoothly, no binding at all.

The flat head hex socket drive made install super easy with just a standard Allen key, and the black oxide finish hasn't shown any wear after a few months holding my workbench jig together.

Had to swap out a few stripped cap screws on a jig at work, and the socket drive made it easy to torque them down without camming out. The thermal black oxide finish is holding up fine so far, though I wish the pack came with a couple extras for the price.