هولو-كروم 32272 براغي تثبيت برأس مقبس بنقطة كوب 3/4-10 × 3 بوصة | سبيكة فولاذية بأكسيد أسود حراري (10 / عبوة)

The hex socket drive grabbed perfectly with my Allen key, and the black oxide finish feels tough. These cup points held tight on a shaft for a motor mount I was repairing, no slipping at all.

The cup point bites into the shaft exactly where I need it, and the black oxide finish makes them look proper in the machine. All ten came clean with no burrs on the threads, so they threaded in smooth right out of the package.

I needed set screws that wouldn't strip under high torque, and these hex socket ones hold firm in a tight threaded hole. Only minor complaint is the black oxide finish smudges a bit on my fingers during installation.