براغي رأس كوبي M20 × 55 مم | فولاذ سبيكة (25/عبوة)

The cup point really bites into the metal shaft, so I'm not worried about these backing out under heavy vibration. Used them to lock down a gear on a custom jig, and they hold that adjustment perfectly.

These M20 set screws really bit into the shaft on my gear coupling thanks to the cup point tip. The alloy steel feels tough and the hex drive allowed me to tighten them down securely without stripping.

The hex socket drive made torquing these into a tight spot under my workbench a breeze, and the cup point bites down hard on the shaft. For the price per pack, the alloy steel feels solid and the threading ran clean without any binding.