M36 X 180mm 內六角螺絲 | 六角驅動 | 12.9 級合金鋼 (16 顆/包)

Used these on a heavy-duty fixture base and the head clearance is spot-on for a 27mm socket. The 12.9 hardness is no joke though—they tightened down with zero deformation and the threads felt clean out of the pack. Fourteen of them held a load that would’ve stripped cheaper bolts, so I’m ordering an

Installed these on a large press jig I’m building, and the hex socket drive made torquing them down effortless. The 12.9 grade alloy steel feels incredibly solid — no flex at all under heavy load.

I needed a heavy-duty cap screw for a large press jig, and these M36 x 180mm bolts with the hex socket drive seated perfectly without any binding. The Class 12.9 alloy steel feels rock-solid, and the sixteen-pack is great for having spares on hand.