M16-2×140mm 內六角螺絲 | 六角驅動 | 半牙 | 強度等級12.9 合金鋼 鍍鋅 (10顆/包)

The hex socket drive on these M16 bolts made installation on my press jig much easier than using standard hex keys. The zinc plating looks consistent and the partially threaded design held firm under load. Exactly what I needed for precision assembly work.

Had to swap out some worn bolts on a heavy press, and these cap screws fit perfectly with no wobble. The zinc plating looks clean and consistent, which gives me confidence they'll hold up in the shop.

Installed these in a jig fixture and the partially threaded design really helped with alignment during assembly. The zinc plating held up fine against the occasional coolant splash.