HOLO-KROME 07012 براغي مقبس قفل 1/4-28 × 1/8 بوصة | محرك مقبس سداسي | فولاذ سبائكي (100/عبوة)

The hex drive in these jam screws is machined cleanly, so my 5/32" allen key fits without any wobble. Used a few to lock down a misbehaving cam follower on a mill fixture, and they've held tight through a full shift.

Had a weird vibration in a linear actuator that these jam screws fixed completely—the through hex socket makes installation a breeze with a standard Allen key. They hold tight even after hours of runtime.

Perfectly flush once seated, these jam screws lock up tight without any protruding heads. The through hex drive made installation straightforward even in that cramped panel I was working on.