HOLO-KROME 32146 براغي ضبط بنقطة كوب 5/16-18 × 1/2" بمقبس | فولاذ سبائكي مؤكسد حراريًا أسود (100 / عبوة)

The hex socket drive seated perfectly on my Allen key, and the cup point bit into the shaft without slipping during assembly. The black oxide finish looks uniform across all 100 pieces, so no rust worries in my shop.

The hex socket drive seated perfectly on these cup point screws, and the black oxide finish hasn't chipped during installation. They clamp components securely in the tapped holes without any wobble.

Was worried these might strip under heavy torque, but the hex socket held solidly and the black oxide coating is a nice touch. Exactly what I needed for securing a pulley on a motor shaft.