HOLO-KROME 32222 1/2-13 x 1" 杯端固定螺絲 | 合金鋼熱處理黑色氧化 (50 / 包)

The black oxide finish on these 1/2-13 cup point screws holds up well against rust in my shop, and the hex socket gives a solid grip even with torque. They snugged down tight on a pulley I repaired without stripping, exactly what I needed. Good value for a full pack of 50.

I needed these for a shaft-mounted clamping application, and the hex socket cup point design made installation straightforward with good hold. The black oxide has a clean, professional look that resists surface rust better than bare steel I’ve used before.

The black oxide finish on these set screws made them easy to see against the steel shaft I was working on, and the hex socket drive took the Allen key without any slipping. They seated firmly in the tapped hole on the first try, exactly as needed for holding a collar in place.