HOLO-KROME 32118 براغي رأس مقبس نقطة كوب 1/4-20 × 3/8 بوصة | سبيكة فولاذ أكسيد أسود حراري (100/عبوة)

The hex socket drive made installing these in a tight spot a breeze, and the black oxide finish feels durable. Perfect for clamping a pulley onto a shaft without any slipping.

Used these to lock a gear onto a motor shaft and the cup point really bites into the metal without rounding off. The black oxide finish gives them a nice grip and they haven't stripped after a few adjustments. Solid little fasteners for the price.

I needed a few extras for a shaft collar repair and these came in a decent quantity. The hex socket cut was clean and the cup point grabbed the shaft just right without slipping. Black oxide finish matches well with industrial equipment.