M12-1.75 x 70mm 內六角螺絲 | 六角驅動 | 部分螺紋 | 12.9級合金鋼 熱處理黑色氧化 (50個/包)

I was nervous about getting the thread engagement right on a fixture jig, but the partially threaded shaft on these 70mm bolts made alignment a breeze. The hex drive seated perfectly without any cam-out, and the 12.9 alloy feels reassuringly rigid.

The black oxide finish on these M12 screws looks sharp and held up perfectly during my jig assembly. The hex socket drive made installation straightforward with no stripping issues. Exactly the high-strength class 12.9 hardware I needed for this tooling project.

I needed something tougher than standard screws for a jig setup, and these M12-1.75 x 70mm bolts with black oxide coating fit the bill perfectly—the partially threaded design let me secure deep fixtures without stripping.