M36-4 x 170mm 六角頭螺絲 | 8.8級鍍鋅鋼 | 部分螺紋 (2/包)

The zinc plating looks clean and even out of the pack, and the partial threading made alignment on the flange a lot easier. These M36 bolts torqued down smooth with a socket and held firm during our press setup.

I was a bit worried about partially threaded bolts for a heavy duty project, but these have held up perfectly under load. The hex head gave my socket wrench a solid grip with no slipping.

Finally, an M36 bolt that actually fits the oversized machinery I'm working on — the partially threaded design made alignment way easier than expected. The hex head grabbed cleanly with my socket, and the zinc plating looks like it'll hold up well in my shop environment.