HOLO-KROME 06018 7/16-14 X 7/32" 內六角止付螺絲 | 六角驅動 | 合金鋼 (100 / 包)

The hex socket on these jam screws allows for a secure, flush fit without any exposed head. I used them to lock a critical adjustment on my milling machine, and they haven't budged under vibration. The alloy steel feels dense and precise, exactly what I needed for this job.

Was tired of standard set screws backing out on a high-vibration assembly, and these jam screws with the through hex drive solved it immediately. The alloy steel feels solid, and the 7/16-14 thread engagement is just right for locking down without stripping.

The 7/16-14 threads seated perfectly in my tapped hole, and the through hex socket made driving them with a standard hex key effortless even in tight spots. All 100 pieces in the package have consistent depth on the socket, which is exactly what I need for locking springs in place.