Thanks Mike for your help. You're right, the slot is for radial assembly of the wires passing through the strain relief fitting. The fitting itself though is made of nickel plated brass, with material inside that is compressed around the wires as a nut is tightened. Given this, do you still...
I am designing a panel with an M8 x 1.25 threaded hole through the panel. I want to add a slot, 0.180" wide, that reaches from the edge of the panel to the threaded hole. I have a strain relief fitting that I would like to thread into the hole. But this fixture will be subject to vibrations...