M5 X 30mm 滾花杯頭內六角止付螺絲 | 合金鋼 (250個/包)

Was looking for a set screw that wouldn't strip under pressure, and these M5s with the hex socket drive handle torque really well. The knurled cup point grips the shaft securely without marring it.

These knurled cup points really bite into the shaft without needing a flat spot, which saved me a headache on a stubborn alignment jig. The hex socket drive makes them easy to torque down even in a cramped corner, and the whole box of 250 feels like a solid deal for the price.

The hex socket drive made tightening these in a cramped spot under my workbench a breeze. All 250 screws came uniform and the cup point bit held firm without slipping.