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Old 12-15-2008, 03:58 PM   #1
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Electrical Box screw sizes


I need additional screws for several electrical boxes, some mounting a fixture, some for switches, some for covers. I just want to buy some boxes of machine screws to cover the various sizes of commonly used screws in electrical boxes and fixtures.

I think the threads on the most common screws are 6/32, 8/32 and 10/32. Can anyone confirm that these are the correct sizes for the common electrical screws?

Thanks
Jamie

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Old 12-15-2008, 04:27 PM   #2
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Electrical Box screw sizes


the screw that holds the device on is a 6-32, usually about 1 inch.

on steel boxes, the screw that holds the cover or plaster ring on is an 8-32, fairly short.


ground screws are usually 10-32

trim plate screws are 6-32 but they are painted to match the plates.

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Old 12-15-2008, 04:33 PM   #3
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Electrical Box screw sizes


Quote:
Originally Posted by nap View Post
the screw that holds the device on is a 6-32, usually about 1 inch.

on steel boxes, the screw that holds the cover or plaster ring on is an 8-32, fairly short.


ground screws are usually 10-32

trim plate screws are 6-32 but they are painted to match the plates.
Thanks! I have to put a box extension on, and have some fixtures to mount that didn't come with screws.

Thanks again for the info, I'll be able to wrap up a couple more projects. :-)
Jamie
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