M6-1 x 70mm 圓頭內六角螺絲 | 全牙 | 12.9級合金鋼 熱處理黑色氧化 (200顆/包)

The black oxide finish on these M6-1 x 70mm bolts is uniform and slick, so they thread into my fixture plates with barely any resistance. All 200 of them came perfectly deburred and the hex drive is a snug fit, which is exactly what I need for repeated tooling changes.

I needed some longer M6 screws for a jig build and these 70mm ones fit perfectly. The hex socket drive made installation quick without stripping the head.

The black oxide finish on these is honestly gorgeous—gives them a uniform, professional look that stands out on my jigs. The hex socket drive seated perfectly with my Allen key, and all 200 threads were clean with zero burrs right out of the box. Exactly what I needed for precision assemblies.