براغي تثبيت سن داخلية نقطة كوب مع كرة نايلون 7/8-9 × 1-1/2 بوصة | فولاذ سبائكي (25/عبوة)

These screws were exactly what I needed for a heavy machinery adjustment, and the hex socket drive made it easy to get them tight even in a cramped spot. The nylon pellet on the cup point really does keep the tip from digging in too hard.

I needed a set screw that wouldn't mar a precision shaft, and these alloy steel ones with the nylon pellet tip are perfect for holding firm without damage.

The nylon pellet tip grips the shaft firmly without marring it, and the cup point holds its position even under heavy vibration. The alloy steel body feels dense and durable, and the hex socket gives you plenty of leverage in tight spots. These seated cleanly and haven't budged since installation.