Can I add a slot to reach a thread hole?
Can I add a slot to reach a thread hole?
(OP)
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.
Will removing approximately 1/4 the material the fitting screws into be too much to be sure of a secure fit?
Thanks for your help!
Will removing approximately 1/4 the material the fitting screws into be too much to be sure of a secure fit?
Thanks for your help!





RE: Can I add a slot to reach a thread hole?
Unfortunately, the slot will tend to chew up the strain relief as it's screwed into the panel, and even if that's not a problem, the strain relief may ooze into the slot after installation, and thereby fail to do its job.
The slot will also be fairly expensive to add. A punched slot would interfere with the tapping operation, so it has to be milled after tapping. ... unless a bandsawed slot would be acceptable; most shops would refuse to do it that way absent specific instruction.
IOW, absent considerable justification (a lot more than 'I want') in its favor, the slot is a terrible idea.
Mike Halloran
Pembroke Pines, FL, USA
RE: Can I add a slot to reach a thread hole?
RE: Can I add a slot to reach a thread hole?
... for which purpose you could pre-twist the wires, but half the time that will be done in the wrong direction, making matters worse.
... and you're probably paying way too much for strain reliefs, and for slots.
Mike Halloran
Pembroke Pines, FL, USA