Electronics > Beginners
Proper way to mount binding posts in a metal front panel?
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Jeroen3:
Shorting to chassis is not a problem with proper binding posts. Stop buying that cheap stuff.
930103101 -  Binding Post, PKI 10 A Series

This one has plastic bushing in and around the hole on both sides.
Look for yourself in this this model.

David Hess:
Binding posts intended for a metal panel include an insulating flange.  Hardware kits for some power packages like TO-220 also include an insulating washer with a flange to isolate the tab from the mounting hardware.

I like Ian.M's o-ring idea but have not used it myself.  I think o-rings would be more reliable than heat shrink tubing and as good if not better than a small insulating washer that fits inside the hole in the chassis.
Gyro:
I've never seen terminals with absolutely no locating flanges. It will be very difficult to make them look straight unless you introduce some form of rigid insulating spacers - that probably rules out anything flexible (rubber).

@OP: You say 5-way binding posts, the ones you show are 2-way, any pictures of the actual ones? Is it a case of the end terminals having flanges and the intervening ones not? (You didn't trim them off so you could use smaller holes did out?  ;))


EDIT: You want someting like these, designed for the job... https://uk.rs-online.com/web/c/fasteners-fixings/spacers-standoffs/screw-insulators/

Brumby:
The only problem with things like this: is the flange at one end.

There's no room for them without lifting one side off the panel, cutting the flange off or some other mechanical modification.

Edit: By cutting off the flange, you create the plastic washer I mentioned above.
Nusa:

--- Quote from: Gyro on December 10, 2018, 07:22:17 pm ---@OP: You say 5-way binding posts, the ones you show are 2-way, any pictures of the actual ones? Is it a case of the end terminals having flanges and the intervening ones not? (You didn't trim them off so you could use smaller holes did out?  ;))

--- End quote ---

Depends on how you choose to count the ways:
(From http://www.ietlabs.com/pdf/GR_Experimenters/1952/GenRad_Experimenter_June_1952.pdf )
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