HOLO-KROME 64080 براغي رأس مقبس 1/2-13 X 1-1/2" | رأس زر بمحرك سداسي | فولاذ سبائك معالجة بأكسيد حراري أسود (25 / عبوة)

Finally got a chance to swap out the old bolts on my tooling fixture, and the black oxide finish on these screws looks and feels much more durable than the standard zinc ones. The hex socket drive seated perfectly with my Allen wrench, no stripping or wobble at all.

Used these for a jig fixture at work where I needed precise thread engagement, and the socket drive seated cleanly without stripping. The thermal black oxide coating held up nicely against light coolant splashes, and all 25 pieces came with consistent threads.

The black oxide finish on these screws is holding up perfectly in my machinery jig, no rust after weeks of use. Drive engagement with a hex key feels crisp and secure every time.