HOLO-KROME 32168 3/8-16 X 3/8" 杯端內六角止付螺絲 | 合金鋼熱處理黑色氧化 (100 / 包)

These are exactly what I needed for a shaft collar repair on a milling machine. The black oxide finish on these set screws seems to resist rust well, and the hex socket drove in smoothly without stripping.

The thermal black oxide finish on these screws is surprisingly tough—I installed a batch on a shaft assembly and not a single one stripped during torquing. Hex socket drive seated perfectly in my driver, and the cup point design held the clamp ring without slipping. Exactly what I needed for a relia

Needed some cup point set screws to hold a shaft collar in place, and the hex socket drive made installation quick with a standard Allen wrench. The black oxide finish on these looks clean and should help resist minor surface rust in my workshop.