براغي مقبس ذات نقطة مخروطية 1/2-20 × 2" | فولاذ سبائكي (50/عبوة)

Installed these to secure a pulley on a motor shaft, and the hex socket drove them in without stripping even at high torque. The alloy steel feels solid, and the cone point bit in exactly as intended.

The cone point really digs into the shaft without walking, and the alloy steel feels sturdy enough for repeated adjustments. I used these to secure a pulley collar and they haven't budged.

The cone point seats perfectly in the dimple I drilled, and the hex socket drive let me get these torqued down properly in a tight spot. Fifty in a pack for this price, and they're alloy steel so I'm not worried about them stripping out on the next adjustment.