M22-2.5 x 70mm 內六角螺絲 | 六角驅動 | 全螺紋 | 12.9級合金鋼 熱處理黑色氧化 (10顆/包)

Installed these on a heavy-duty jig and the M22 thread engagement felt rock solid. The hex socket drive made tightening them down in tight spaces much easier than a standard bolt head.

The black oxide finish is holding up beautifully on my jig setup—no rust after days of coolant exposure. These are rock solid at 12.9 grade, and the fully threaded shaft made alignment a breeze. Exactly what precision work calls for.

The hex socket drive on these M22 screws made tightening them into my jig a breeze with just a standard Allen key. The black oxide finish seems durable and hasn't chipped during assembly, so they should hold up well under pressure.