M16-2 X 35mm 插座螺絲帽 | 六角插座驅動 | 全螺紋 | 12.9 級合金鋼 熱處理黑氧化物 (50 入/包)

Installed these on a heavy jig fixture and the black oxide finish gives them a nice, uniform look while the threads cut cleanly. For a class 12.9 cap screw, they seat firmly with a hex key and haven’t stripped after repeated torque.

I needed some high-strength bolts for a jig I was building, and these M16s fit perfectly with the Class 12.9 rating. The hex socket drive made installation easier than using a hex key on a standard hex head. Glad I found these.

Installed these in a jig I’m building and the hex socket drive made tightening them up a breeze. The black oxide finish seems like it’ll hold up well in a tooling environment.