M42-4.5 x 280mm 外六角螺絲 | 10.9 級鋼 原色 | 半牙 (1入/包)

Installing these on a tractor linkage, the 280mm length gave me just enough thread engagement without bottoming out. The hex head grabbed securely with a standard socket, no slippage at all. Solid Class 10.9 steel, these feel built to last.

Needed these for a heavy equipment repair, and the hex head gave my socket wrench solid bite without any rounding. The partially threaded design made alignment easier than I expected on the first try.

The partial threading on these M42 bolts made it easy to get the right grip depth on the assembly jig. The hex head sat perfectly in my socket without any wobble, and the 10.9 steel feels solid enough for heavy machinery.