M22-2.5 X 100mm 內六角螺絲 | 六角驅動 | 部分螺紋 | 12.9級合金鋼熱處理黑氧化 (10 / 包)

The hex socket drive on these M22 screws gripped perfectly without any cam-out during assembly. The black oxide finish looks clean and industrial on the jig I built. They fit tight and feel solid for heavy tooling work.

These M22 socket cap screws are partially threaded, which made setting the exact depth on my jig much easier than with fully threaded bolts. The hex socket drive seated firmly without any stripping, and the 100mm length was perfect for my heavy machinery build.

The black oxide finish leaves a nice, even matte look, and the threads cut cleanly when I drove them into my fixture plates. For a 12.9-grade screw this size, they feel reassuringly solid and haven’t stripped under heavy torque.