Those "8-32" Screws That Come With Light Fixtures - Electrical - Contractor Talk

Those "8-32" Screws That Come With Light Fixtures

 
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Old 09-04-2015, 05:43 PM   #1
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Those "8-32" Screws That Come With Light Fixtures


Just wondering....

...are the screws that come with light fixtures really supposed to be 8-32's or are they something else? They are such wobbly [email protected], being a hair narrower. What's the story? Are they really intended for the screwing the crosspiece into the jbox? I always use my own screws that are more snug, but just wondering why they supply that junk.

Last edited by MarkJames; 09-04-2015 at 06:20 PM. Reason: speling :)
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Old 09-04-2015, 05:50 PM   #2
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Re: Those "8-32" Screws That Come With Light Fixtures


cuz the DIY'ers don't have their own screws like most of us do....

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Old 09-04-2015, 05:52 PM   #3
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Re: Those "8-32" Screws That Come With Light Fixtures


Wow, you get screws for that?

If supplied, the screws usually work well for metal boxes. With plastic boxes, I usually wind up using short deck screws.
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Old 09-04-2015, 05:56 PM   #4
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Re: Those "8-32" Screws That Come With Light Fixtures


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Originally Posted by Tinstaafl View Post
Wow, you get screws for that?

If supplied, the screws usually work well for metal boxes. With plastic boxes, I usually wind up using short deck screws.
I'd have to disagree. They're too loose for metal boxes most, if not all of the time. More peace of mind to spend $10 box of 8-32's in the electrical aisle.

Last edited by MarkJames; 09-04-2015 at 06:01 PM.
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Old 09-04-2015, 06:00 PM   #5
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Re: Those "8-32" Screws That Come With Light Fixtures


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Originally Posted by griz View Post
cuz the DIY'ers don't have their own screws like most of us do....
On the plus side, I think it adds to DIY uncertainty. Just like the lousy wall anchors in TP holder packs.
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Old 09-04-2015, 06:07 PM   #6
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Re: Those "8-32" Screws That Come With Light Fixtures


Pure economics - they save $10 on every 3 billion boxes, by supplying crappy screws.
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Old 09-04-2015, 06:29 PM   #7
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Re: Those "8-32" Screws That Come With Light Fixtures


Fixture boxes come with their own screws.
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Old 09-04-2015, 06:49 PM   #8
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Re: Those "8-32" Screws That Come With Light Fixtures


...

Last edited by MarkJames; 09-04-2015 at 06:52 PM.
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Old 09-04-2015, 06:51 PM   #9
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Re: Those "8-32" Screws That Come With Light Fixtures


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Originally Posted by Inner10 View Post
Fixture boxes come with their own screws.
Yes, of course. And I use them if they're still there. But in old houses, after years of lighting swaps, you see everything else, too. Today I replaced a hunter ceiling fan who's mounting plate was lagged into plaster and barely into wood. It came loose as soon as started to unscrew it.
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Old 09-04-2015, 07:02 PM   #10
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Re: Those "8-32" Screws That Come With Light Fixtures


I thought outlets and devices used 8/32 , covers use 6's and fixture bracket are 10
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Old 09-04-2015, 07:10 PM   #11
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Re: Those "8-32" Screws That Come With Light Fixtures


the problem may be in the old boxes...........or your buying junk fixtures.
I dont run into often but sometimes some jackhole cross threads.

Buy long 8-32 and you can always cut them down......theres always a handfull in my toolbags just incase.
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Old 09-04-2015, 07:12 PM   #12
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Re: Those "8-32" Screws That Come With Light Fixtures


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Originally Posted by Tom M View Post
I thought outlets and devices used 8/32 , covers use 6's and fixture bracket are 10
No, single gang device boxes are 6-32, octagonal fixture boxes, 4" and 4-11/16 are 8-32.
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Old 09-04-2015, 08:15 PM   #13
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Re: Those "8-32" Screws That Come With Light Fixtures


Quote:
Originally Posted by Red Adobe View Post
the problem may be in the old boxes...........or your buying junk fixtures.
I dont run into often but sometimes some jackhole cross threads.

Buy long 8-32 and you can always cut them down......theres always a handfull in my toolbags just incase.
It's definitely the cheap screws that come with these fixtures, like typical bix box stuff and lots of online stuff, too. It's not from cross-threading ( or hardly ever, anyway) because better screws work perfectly. Yes, I cut them if necessary, really like my Kleins.
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Old 09-05-2015, 08:05 AM   #14
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Re: Those "8-32" Screws That Come With Light Fixtures


Probably 99.5% of cheap light fixtures are made in China or some other third-world Asian country. Quality is usually nonexistent.

The "steel" those screws are made of is only slightly tougher than aluminum.
I would imagine the tooling used to make the screws is what you'd call accurate. They are nearly all undersized and can be infuriating to use.
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Old 09-05-2015, 10:52 AM   #15
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Re: Those "8-32" Screws That Come With Light Fixtures


Quote:
Originally Posted by Speedy Petey View Post
Probably 99.5% of cheap light fixtures are made in China or some other third-world Asian country. Quality is usually nonexistent.

The "steel" those screws are made of is only slightly tougher than aluminum.
I would imagine the tooling used to make the screws is what you'd call accurate. They are nearly all undersized and can be infuriating to use.
A friend of mine owns a manufacturing co. , they sometimes change dies every day depending on production. The China co.s change them monthly if that. When the dies are worn and the screw is off sized sometimes you are nearly stripping the box the first time you put the screw in.
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Old 09-05-2015, 11:43 AM   #16
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Re: Those "8-32" Screws That Come With Light Fixtures


I have a couple compartment boxes of electrical screws for fixtures, outlets, switches, boxes, etc. of various lengths. They always go in with me on those types of jobs. And, about half the time, I need to cut to length.
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Old 09-05-2015, 01:01 PM   #17
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Re: Those "8-32" Screws That Come With Light Fixtures


So where are the 10's used? I know I have acquired some from exterior flood lights and maybe inside the box? those screws for wire clamps.

Last edited by Tom M; 09-05-2015 at 01:19 PM.
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Old 09-05-2015, 01:50 PM   #18
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Re: Those "8-32" Screws That Come With Light Fixtures


Quote:
Originally Posted by Tom M View Post
So where are the 10's used? I know I have acquired some from exterior flood lights and maybe inside the box? those screws for wire clamps.
I clipped this from elsewhere:


6-32 screws will generally be used to screw receptacles and switches into plastic boxes and steel mud rings, they are also used to attach cover plates to miscillaneous devices (receptacles and switches).

8-32 screws will commonly be used in steel electrical boxes (4" square and larger)

10-32 screws will commonly be found in light fixtures and most ground screws have 10-32 threads

1/4-20 and 3/8-16 are more bolts than screws....they will generally be used to bolt equipment to walls, floors, etc...
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Old 09-05-2015, 03:23 PM   #19
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Re: Those "8-32" Screws That Come With Light Fixtures


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Originally Posted by MarkJames View Post
I clipped this from elsewhere:


6-32 screws will generally be used to screw receptacles and switches into plastic boxes and steel mud rings, they are also used to attach cover plates to miscillaneous devices (receptacles and switches).

8-32 screws will commonly be used in steel electrical boxes (4" square and larger)

10-32 screws will commonly be found in light fixtures and most ground screws have 10-32 threads

1/4-20 and 3/8-16 are more bolts than screws....they will generally be used to bolt equipment to walls, floors, etc...
Sort of.

6-32 - Device mounting and plates
8-32 - Fixture and general junction box screws; 4"sq, 4" oct, 4-11/16"sq
10-32 - Ground screws, clamp screws on metal gem boxes, fan box screws (NOT generally found in light fixtures)
10-24 - Fixture mounting screws on most round weatherproof boxes
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Old 09-05-2015, 11:08 PM   #20
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Re: Those "8-32" Screws That Come With Light Fixtures


Quote:
Originally Posted by Inner10 View Post
Fixture boxes come with their own screws.
But they are usually gone by the time I get to it, that's why I carry them with me because the lighting company figures they'll be there also and they don't supply them either.

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