M8-1.25 X 70mm 內六角螺絲 | 圓頭內六角驅動 | 全牙 | 10.9級合金鋼熱處理黑氧化 (100顆/包)

I needed a stronger screw for a tooling fixture and the black oxide finish on these has held up perfectly without any surface rust after a week of use. The hex socket drive made installation a breeze with my Allen key.

The hex socket drive on these M8 screws makes tightening them in tight spaces much easier than I expected, and the black oxide finish looks clean on my jig setup. They seated perfectly in my precision assembly without any wobble.

These bolts fit perfectly in my jig setup, and the black oxide coating seems to be holding up better than cheaper hardware I've used before. The 10.9 steel gives me confidence they won't snap under heavy load.