M8-1.25 X 35mm 內六角螺絲 | 六角驅動 | 尼龍防鬆 | 全牙 | 12.9 級合金鋼熱處理黑氧化 (300 / 包)

The black oxide finish wiped clean easily and left no residue on my fingers, which was a nice surprise for a bulk pack. Threaded all 300 into jig fixtures without a single stripped drive or binding issue. These are solidly built for the price.

Threading these into a precision assembly was a breeze thanks to the nylon patch, which held them snugly without any extra Loctite. The black oxide finish looks great on my machine tooling, and the 300-count box means I’ve got plenty for future projects. Really solid feel for the price.

Used a handful of these for a jig I was building and the black oxide finish gives them a nice consistent look. The hex socket drive fits my Allen key perfectly with zero wobble.