M20-1.5 X 140mm 外六角螺絲 | Class 10.9 鋼本色 | 部分螺紋 (10入/包)

I used these to secure a heavy conveyor frame and the 10.9 grade steel handled the torque without any sign of stripping. The hex head fit my socket wrench perfectly, no slipping at all.

The partial threading on these M20 bolts made aligning them in tight spots way easier than I expected, and the hex heads grabbed my socket cleanly without any slip. I’ve used a dozen so far on a heavy equipment frame and they’ve held rock solid, no complaints.

Using my torque wrench, these threaded in smoothly without binding, and the 10.9 grade held firm when I tightened them down on the base plate. For the price, the partial threading gave me exactly the grip I needed without extra hassle.