M16-2 x 45mm 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 (50個/包)

The black oxide finish gives them a nice, even look and they seated perfectly in my fixture plates without any fuss. Threads were clean and the 12.9 hardness is exactly what I wanted for a high-torque clamping setup, so these are going to last.

I needed exactly M16-2 x 45mm for a jig I was rebuilding, and these threaded in smoothly with no binding. The hex socket drive gave a solid grip, and the 12.9 alloy steel feels plenty tough for the load.

The black oxide finish on these M16-2 screws held up perfectly when I torqued them into my fixture plates, no galling or stripped threads. The 12.9 alloy steel feels rock solid, and the hex socket drive makes them easy to seat even in tight spots. Exactly what I needed for precision assembly work.