M10 X 12mm 滾花杯頭內六角止付螺絲 | 合金鋼 (250顆/包)

Finally, a set screw with a knurled cup point that actually grips the driver bit without stripping. I used these for a tight-access bracket assembly and the alloy steel held up perfectly. Definitely worth the buy if you need reliable fasteners for repeated adjustments.

The hex socket drive makes torquing these down in tight engine bays a breeze. I’ve used a full bag on a frame build and not a single one stripped. Exactly what my kit needed.

Finally got these to replace some stripped fasteners in a tight spot, and the hex socket drive makes all the difference for torque control. The knurled cup point holds firm under pressure, so no slipping during installation.