براغي ضبط برأس كأسية مقاس 1/2-13 × 5/8 بوصة | سبائك فولاذية مطلية بالزنك (100/عبوة)

The hex socket drive on these makes cinching them into tight spots a breeze, and the zinc plating looks clean and even across all 100. My stubborn machine vibration issue is gone after swapping these in.

Had to tighten a set screw in a really awkward spot on a machine base, and the cup point bit right into the shaft without slipping. All 100 screws arrived uniformly threaded and the zinc coating looks clean. Exactly what I needed for a high-torque application.

The hex socket drive made tightening these set screws into a machine slide a breeze, even in a cramped spot. The cup point tip really bit into the shaft without any slippage, and all 100 in the package were clean and well-formed.