Toggle switch movement

[JCook]

After a toggle switch is screwed down onto a panel's backplate, what technique is used to prevent the toggle from rotating in place?

[cichlidfan]

After a toggle switch is screwed down onto a panel's backplate, what technique is used to prevent the toggle from rotating in place?

 

Many toggle switches include an anti-rotation washer. There is a notch in the threaded barrel of the switch which keeps the washer from rotating. The outer edge of the washer has a small tab at a right angle. A small hole or divot can be made in the back of the panel to accept the tab.

 

I know that make little or no sense. I will see if I can find a picture.

 

EDIT: OK.

 

 

 

Another option used is a standard internal tooth lock washer.

 

EDIT 2: If you look the data sheet for a switch like this will give you the correct hole pattern dimensions.

 

DM would probably know for sure but IIRC all mil-spec switch have the washer pictured.

Edited August 3, 2012 by cichlidfan

[JCook]

Thanks - that does make sense. I figured it was something like that. Apparently none of the toggle switches I've purchased have this feature.

[cichlidfan]

Thanks - that does make sense. I figured it was something like that. Apparently none of the toggle switches I've purchased have this feature.

 

I am not surprised. I am familiar with it from working DOD contracts so every switch I specified was like that. An internal tooth washer will do the job as long as you tighten everythiing well.

 

...or a little dab of Loctite. ;)

Edited August 3, 2012 by cichlidfan

[JG14_Smil]

Some hot glue on the backside can do it.

[Deadman]

Yes that is the Anti torque locking ring all of my mil spec switches have it