M22-2.5×170mm 육각 머리 캡 나사 | 클래스 8.8 강철 무도금 | 부분 나사산 (30개/팩)

I used these for a heavy machinery bracket, and the hex head gripped perfectly with a socket wrench. The 170mm length was just right for the deep assembly, and the 8.8 steel feels solid.

The partially threaded design made installing these M22 screws into a prefabricated machine frame much simpler, as the smooth shank helped align the joint before the threads engaged. I've used a few different suppliers for 8.8 steel hardware, and these cut clean threads without binding or galling, w

These bolts have a clean hex head that made torquing them down with my socket wrench really easy. The 170mm length was exactly what I needed for that heavy machinery frame, and the partial threading let me seat them deep. No issues with the steel holding up so far.