براغي هولوكروم 73066 ذات رأس أسطواني مقاس 1/4-28 × 1-1/4 بوصة | محرك سداسي | فولاد سبائكي مؤكسد حراري أسود (100/عبوة)

Pulled these out for a jig I was rebuilding and the alloy steel feels rock solid, the black oxide finish gives them a nice uniform look that resists fingerprints. I’ve used cheaper packs before where the threads bind halfway in, but these seated clean and torqued down without any hesitation.

I needed some quality fasteners for a jig I’m building, and the black oxide finish on these is a perfect match for the look I wanted. The socket drive engaged my hex key smoothly, and the whole pack had consistent threading.

Perfect threads on every single one out of a hundred, and the black oxide finish looks great in my jig assembly. I've had no issues with them stripping, even when torqued down fairly hard against the fixture.