براغي سوكيت ذات نقطة كوب من HOLO-KROME 32178 3/8-16 X 7/8" | فولاد سبائكي مع أكسيد أسود حراري (100 / عبوة)

The hex drive fit my socket wrench perfectly without any slipping, and the black oxide finish looks clean on exposed shafts.

Threaded a whole batch of these into a shaft collar setup and the hex socket drive seated perfectly every time—no stripped heads, no fuss. The cup point bit in nicely and held firm under vibration. Exactly what I needed for the job.

The black oxide finish is a nice touch—it doesn't chip off during installation like some cheaper coatings. These cup point screws hold onto my shaft collars firmly, and the hex socket drive makes tightening them in tight spaces much easier.