براغي مقبس نقطة كوب HOLO-KROME 32082 #8-32 X 1/2" | فولاذ سبائكي أسود حراري (100 / عبوة)

Bought these for clamping a collar onto a motor shaft, and the hex socket drove in cleanly without stripping. The thermal black oxide finish gives them a nice even look and they seated firmly in the tapped hole. Solid purchase for the price.

The cup point on these set screws grabs the shaft really well—no slipping even on a hardened steel shaft I was working with. The black oxide finish looks uniform and should resist rust well in my shop. Exactly what I needed for a stubborn gear position.

Finally found some set screws that actually bite into the shaft without stripping—the cup point is sharp and holds tight under load. I used these on a small pulley assembly, and the black oxide finish keeps them from rusting in a damp shop.