براغي تثبيت بنقطة كوب | 5/16-24 × 2-1/4" | فولاذ سبائكي (100 / عبوة)

They fit perfectly in a tight spot on my milling machine where I needed a longer set screw to reach through a fixture plate. The hex drive grabbed nicely and the cup point bit into the shaft without slipping.

Swapped out some old grub screws on a milling fixture and these cup points seated perfectly without slipping. The 5/16-24 thread cut cleanly into the alloy steel, and the hex socket drive made final tightening a breeze.

I was pleasantly surprised by how well the hex socket drive grabbed onto my Allen wrench—no stripping even under heavy torque. The alloy steel feels solid and durable, perfect for securing machine components. Only wish the cup point was a bit sharper for better bite on softer surfaces.