HOLO-KROME 87213 M16-2 x 45mm 內六角螺絲 | 平頭內六角驅動 | 合金鋼熱處理黑色氧化 (25入/包)

I was pleasantly surprised at how precisely these M16-2 x 45mm screws fit into my jig setup—no wobble at all. The hex socket drive made installation really quick with my Allen key, and the black oxide finish seems durable so far.

The black oxide finish on these screws is flawless and the hex drive seated perfectly in my socket without any wobble. Used them to secure a jig fixture on my mill, and they held tight under heavy vibration. Exactly what I needed for precision assembly work.

Pulled these out of the package and the M16-2 threads are cut cleanly—screwed right into a jig without any binding. The flat head fits flush against the surface, which is exactly what I needed for the assembly.