براغي مقبس سداسي بنقطة كوب من النايلون 1/2-13 × 2 بوصة | فولاذ سبائكي (50 / عبوة)

The cup point bites into the shaft really well, so I don't worry about these backing out under vibration. The nylon pellet locks them in place firmly, and the alloy steel feels plenty tough for the torque I put on the hex socket.

The hex socket drive made seating these in a tight spot under my mill table way easier than wrestling with a wrench. The nylon pellet bites down firmly without scoring the shaft, and all fifty arrived with clean threads.

Needed these for a jig I was building and the hex socket drive made installation in tight spots a breeze. The nylon pellet cup point holds firmly without marring the shaft, exactly what I was hoping for.