M20-2.5 X 210mm 外六角螺絲 | 8.8級鋼本色 | 半牙 (10個/包)

Needed these for a heavy equipment jig I was building, and the 8.8 class steel holds torque perfectly. The partially threaded shank gave just enough grip without binding.

The hex head on these is clean and solid, so my socket wrench bites without slipping. Class 8.8 steel feels reassuringly tough for the heavy equipment frame I bolted up. Exactly the right length at 210mm for my spacer setup.

I needed some heavy-duty bolts for securing a base plate, and these M20s fit perfectly with a wrench. The hex head gives a solid grip, and the partially threaded shaft let me adjust the depth just right.