HOLO-KROME 64034 #10-24 X 3/4" 套筒帽螺絲 | 圓頭六角套筒驅動 | 合金鋼熱處理黑色氧化 (100 / 包)

I needed these for a tooling fixture at work, and the black oxide coating held up perfectly to some oily handling without any rust spots. Drive engagement with a hex key felt snug and precise on every single screw out of the bag.

The finish on these is flawless, every single screw in the bag looks uniform and the black oxide gives them a nice, consistent grip. I’ve used them in a jig setup and they snugged down perfectly without any stripping on the hex drive. Honestly, for a hundred pieces, the quality feels like it’s from

The black oxide finish on these screws has held up perfectly during assembly of a small jig, no chipping or wear after tightening. They seated flush and the hex drive gripped firmly without stripping. Exactly what I needed for precision work.