HOLO-KROME 33102 براغي ضبط ذات رأس مقبس بنقطة 5/16-24 × 1 بوصة | فولاذ سبائكي أسود حراري (100/عبوة)

These set screws bit into the shaft perfectly, and the black oxide finish hasn't shown any wear after a week of use. Exactly what I needed for a few stubborn collars on a conveyor build.

Finally got around to using these on a small shaft collar project and the cup point really digs in nicely without slipping. The hex drive engaged smoothly and the black oxide finish looks clean even after tightening.

These set screws came in a sturdy package and the hex drive works perfectly with my standard Allen keys. The black oxide finish is a nice touch, seems like it’ll resist rust well on the machinery I used them for.