M16 x 30mm 滾花杯端內六角止付螺絲 | 合金鋼 (50/包)

The hex socket drive made tightening these screws in a cramped machine frame so much easier than using a standard wrench. The knurled cup point grip is solid under high torque without slipping.

Bought these for adjusting clamping fixtures and the hex socket drive made torquing them down in tight spots a breeze. The knurled cup point held its grip firmly on the workpiece without slipping. For a pack of 50 at this price, they're solid.

I needed a set screw that could handle high torque without stripping, and these M16s with their hex socket drive fit the bill perfectly. The alloy steel feels really durable, and the 50-pack is great value for a job like mine.