固定螺絲，M6x22，內六角狗頭自鎖

Finally got these M6x22 set screws installed on my bench vise, and the dog point grabbed perfectly into the threaded hole. The self-locking nylon strip held tight even after a full day of heavy milling vibration.

The nylon strip on this M6x22 set screw really does its job—after a full day of milling, the fixure stayed rock-solid with zero hint of vibration loosening. The dog point gripped the shaft groove cleanly, and the hex socket gave me a snug, confident turn.

The dog point seated perfectly in my fixture’s locating hole, and those self-locking threads snugged up without any play once I torqued them down. Vibration from the mill didn’t budge them at all over a full afternoon of cutting.