براغي ضبط برأس مقبس بنقطة كروية مخددة مقاس 5/16-18 × 5/16" | فولاذ سبائكي مطلي بالزنك (100 / عبوة)

The knurled cup point really digs in nicely on my aluminum fixture, no slipping at all. I used these on a custom jig and the hex socket drive made installation in the tight spot a breeze.

I needed a small screw to fit a tight spot on a jig, and the knurled cup point tip grabbed securely without slipping. The hex socket drive let me apply plenty of torque even in that cramped corner.

The knurled cup point grips the shaft firmly without marring it, which was exactly what I needed for a stubborn pulley. The hex socket drive made torquing them down in a cramped spot a breeze, and all 100 arrived clean with no stripped threads.