M16-2 x 110mm 內六角螺絲 | 六角驅動 | 全牙 | 12.9級合金鋼熱處理黑氧化 (25入)

The 12.9 grade hardness is exactly what I needed for my jig setup, and the fully threaded length gives me plenty of adjustment room. They threaded into the tapped holes without any binding, which says a lot about the tolerances. Solid purchase for a precision assembly.

The hex socket drive on these M16-2 screws made installation a breeze, and the fully threaded design provides excellent grip. I used them for a jig assembly, and the thermal black oxide finish looks professional.

Black oxide finish on these M16 screws held up perfectly when I torqued them down in a milling fixture—no galling at all. The hex socket drive made installation straightforward with no stripped heads. Solid choice for tooling work.