M20-2.5 X 240mm 六角頭螺絲 | Class 10.9 鋼製無鍍層 | 半牙 (5入/包)

Used these for mounting a heavy conveyor section and the 10.9 grade steel gave me confidence they wouldn't shear under load. The partial threading made alignment a lot easier than a fully threaded bolt would have.

Installing these on a press frame and the partial threading made alignment much easier than dealing with fully threaded bolts. The 10.9 grade feels solid, and the hex head gave my socket a good bite without any rounding.

I’m working on a heavy machine base and these hex head cap screws fit the M20 threads perfectly without any binding. The 240mm length gives me just enough grip for a thick assembly, and the 10.9 steel feels solid enough to torque down hard.