HOLO-KROME 08066 1/2" X 1/2" براغي كتف مقبس | رأس مقبس | محرك مقبس | سبيكة فولاذية أكسيد أسود حراري (25 / عبوة)

The hex drive seated perfectly without stripping, and the black oxide finish makes them look clean in my assembly. Used these for a bearing surface on a jig, and the precision ground shoulder definitely lives up to the description.

Installed these as pivot points on a custom jig and the hex drive made tightening them into blind holes a breeze. The black oxide finish seems sturdy so far.

The precision ground shoulder on these screws is perfect for a small pivot axle I needed on a jig — spins smooth and true. They seat flush with no wobble, and the black oxide finish looks clean.