M12-1.75 X 140mm 六角頭螺絲 | 10.9級鋼 原色 | 部分螺紋 (125個/包)

Used these for a farm equipment repair where I needed partial threads to clamp down a bracket. The 10.9 grade steel held up perfectly under torque, no stripping at all.

These bolts worked perfectly for a heavy-duty jig I’m building, and the hex head gives a solid grip with a socket wrench. The 10.9 steel feels really tough, and the 140mm length was exactly what I needed to span a thick bracket.

The partial threading made alignment a lot easier when I was torquing these down on a frame jig, and the hex head grabbed the socket cleanly every time. Class 10.9 held up perfectly under heavy load without any stretch.