براغي تثبيت برأس كوب مقاس 1/2-20 × 1-1/2 بوصة | فولاذ سبائكي (100 / عبوة)

Threads were sloppy on a cheaper set I grabbed last time, but these 1/2-20s cut clean and the hex socket drive made snugging them down in a tight spot a breeze. The alloy steel feels dense and solid right out of the box, and the cup point is already holding firm against a steel shaft I’ve got in a j

The cup point really bites into the shaft without damaging it, and the hex socket drive made tightening them in a tight motor mount a breeze. Exactly the grip I needed for a steady hold.

Installed these on a new indexing fixture and the hex socket held up to repeated high-torque adjustments without rounding out. The alloy steel feels more substantial than the cheap zinc ones I’ve used before.