M12-1.75 X 200mm 六角頭螺絲 | 10.9級鋼素面 | 部分螺紋 (25入/包)

The 200mm length with partial threading gave me just the grip I needed on a steel frame joint, and the hex head seated cleanly with a socket wrench. Class 10.9 hardness handled the torque without any flex.

I needed extra-long bolts for a heavy bracket mount and these 200mm caps fit perfectly. The hex head grabbed nicely with a socket, and the 10.9 steel feels solid under torque.

The partially threaded design made these perfect for a jig I was building where I needed the grip but didn't want threads chewing up the wood. The hex head seated firmly in my socket without slipping, which was my main worry with cheaper bolts.