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#45248 - 11/21/04 07:59 PM A Lesson In Screws
hypress Offline

Registered: 07/20/04
Posts: 132
Loc: Charleston WV
Today I was hanging a front poarch light on a friends house. The screws that mount the fixture to the mounting bracket were to long so I cut them off and tried to screw them into the bracket and they would not fit. No problem I got anouther 8/32 it would not fit ether both 8/32??? WRONG.It seems that the mounting screws were 4mm. Now I have been an electrician for 30 years and this is the first time I have seen metric screws on a residential light fixture. Now I have seen european process equipment that'sto be expected but residential lighting??? I guess we are going to have to get metric screw cuters now. Has any one else run across this. THANKS HYPRESS

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#45249 - 11/21/04 08:06 PM Re: A Lesson In Screws
e57 Offline

Registered: 05/27/03
Posts: 2837
Loc: S.F.,CA USA
Yep, all those high end LV hand blown glass too expensive for my house jobs. My favorite is metric mounting plates, holes are set wider than 3/0, and smaller than 4/0.
Mark Heller
"Well - I oughta....." -Jackie Gleason

#45250 - 11/21/04 09:04 PM Re: A Lesson In Screws
Speedy Petey Offline

Registered: 08/29/03
Posts: 175
Loc: Upstate, NY
I run across tham all the time. They are in many of the cheap crap Chinese fixtures sold in the big obnoxious stores.
Now I have nothing against the Chinese, or any other race, but the quality of their products is terrible.
Speedy Petey

"Anyone who has never made a mistake has never tried anything new." -Albert Einstein

#45251 - 11/21/04 09:59 PM Re: A Lesson In Screws
hbiss Offline

Registered: 12/16/03
Posts: 893
Loc: Hawthorne, NY USA
If you can use a regular screw (it's not a fancy brass thing) just run the 8-32 part of your triple tap through the hole. Then it will be 8-32.

You do carry a triple tap don't you?


#45252 - 11/22/04 01:56 PM Re: A Lesson In Screws
smokumchevy Offline

Registered: 02/14/03
Posts: 62
Loc: Ottawa, Ontario, Canada
Gotta luv those tripple taps.... don't leave home without one myself.


#45253 - 11/22/04 02:06 PM Re: A Lesson In Screws
pauluk Offline

Registered: 08/11/01
Posts: 7693
Loc: Norfolk, England
We have a similar problem here in England.

Around 1970 the electrical industry switched to metric, adopting 3.5 mm threads on device boxes. Prior to that, device fixing screws were 4BA (BA = British Association).

The diameter and threads look pretty much the same at first glance, but are not interchangeable. As there are still plenty of 1950s/60s boxes in use, it's annoying to find the screws supplied with a modern outlet or switch don't fit the old boxes.

#45254 - 11/22/04 03:42 PM Re: A Lesson In Screws
DougW Offline

Registered: 06/08/03
Posts: 1083
Loc: North Chicago, IL
Reminds me of "Chinese Standard Thread"

Usually 8.25 / 32 or thereabouts...

#45255 - 11/22/04 04:50 PM Re: A Lesson In Screws
dougwells Offline


Registered: 05/03/03
Posts: 1226
Loc: kamloops BC Canada
I bought some of these to supplement my Klein triple tap.
edited for spelling

[This message has been edited by dougwells (edited 11-22-2004).]

#45256 - 11/22/04 05:02 PM Re: A Lesson In Screws
Active 1 Offline

Registered: 02/22/03
Posts: 684
Loc: Grayslake IL, USA
I call those chinese 8/32. There just metric. What I hate is when you have those chinese 8/32 trim nuts. You can't tap it out cause it's not deep enough.

Maybe the rest of the world hate those american screws. They say why are they so fat?


#45257 - 11/22/04 05:33 PM Re: A Lesson In Screws
hbiss Offline

Registered: 12/16/03
Posts: 893
Loc: Hawthorne, NY USA
Those are nice Doug. Solves the problem of having to have a tap drill and a tap. Everybody should have at least a 10-32 for those times you need to install a ground screw.

Gotta get them myself!


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