1/2-13 × 2-3/4" براغي ضبط بنقطة كوب | فولاذ سبائكي (50 / عبوة)

These went in smoothly with a socket wrench, and the alloy steel feels sturdy enough for heavy use. Exactly what I needed for a tight spot where a regular hex key wouldn't fit.

The hex socket drive on these set screws made installing them in a tight spot on my milling machine much easier than using a slotted screwdriver. All 50 pieces were consistent in thread and length, which saved me a return trip to the hardware store.

The hardened alloy steel took the hex wrench without stripping, even when I torqued it down hard in a blind spot on the machine frame. All fifty cup points seated perfectly and held their grip, which is exactly what I needed for this setup.