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Old 05-18-2019, 01:45 PM   #1
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Shower faucet thread size?

I've got a sink faucet in my guest head thats too small to fit a "standard" aerator & just barely too big to fit a "junior" adapter. Finally took the shower hose from my other head and screwed it on to confirm thats what size it is.

Problem is i cant find anywhere on the internet that says what those thread dimensions are? Can anybody tell me? It's a female faucet. I'd like to buy an adapter to standard size, so i can screw an aerator on. Does such a product exist?
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Old 05-18-2019, 02:16 PM   #2
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Can you post a photo of the part?
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Old 05-18-2019, 02:22 PM   #3
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Its just a faucet.

But that shower hose fits on it.

It obviously was used as a wet bath shower at one point. But i just want to use it as a sink with a water conserving aerator on it. So i just need an adapter that can convert it to a standard size thread.
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Old 05-18-2019, 02:35 PM   #4
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I think shower hoses are 1/2” straight pipe thread. They always have gaskets.
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Old 05-18-2019, 06:41 PM   #5
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Well a 3/4 female adapter wouldnt quite fit on it, so i dont see how it could be 1/2 inch threads unless im misunderstanding semantics.
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Old 05-18-2019, 06:48 PM   #6
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Well a 3/4 female adapter wouldnt quite fit on it, so i dont see how it could be 1/2 inch threads unless im misunderstanding semantics.

*Btw in my initial post, i mistated it to be a female faucet. Its obviously a male faucet and i need a female adapter.
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Old 05-18-2019, 06:56 PM   #7
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Plumbing is my least favorite thing to do by far, so I usually just buy a new faucet and replace it when I have a problem with one on my 32 year old boat. I usually canít find parts anyway for these old faucets. I have one old one left and it is getting ready to be replaced when I put in the solid surface counter in the galley. I ordered the solid surface sheet today.
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Old 05-18-2019, 07:01 PM   #8
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Yeah, but i literally have a functioning faucet. Im just trying to put an aerator on the end of it to save water usage. If i cant find one, i'll just leave it how it is.
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Old 05-18-2019, 07:17 PM   #9
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Ok i think you're right about it being 1/2 inch. It seems standard faucet threads are measured differently than this type, so thats why a 3/4 adapter was too small.

Guessing i need a 1/2in pipe to standard faucet thread adapter. If such a thing exists...
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Old 05-18-2019, 11:09 PM   #10
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Here is an explanation of aerator sizes.
https://www.plumbingsupply.com/about...-aerators.html
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Old 05-19-2019, 01:53 AM   #11
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Thats great info. Probably all you would ever need to know.
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Old 05-19-2019, 04:36 AM   #12
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Replace the faucet with new for <$50.
It’s either standard 4” spacing or RV 3 3/8” spacing.
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Old 05-19-2019, 05:37 AM   #13
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A larger RV or travel trailer parts store should be able to help, or as suggested source a new faucet.

Should be 1/2 the price of a boat source.
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Old 05-19-2019, 07:15 AM   #14
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Check inside the fitting that's on the faucet where the aerator would be. There may be a hex inside, if there is, that's a good indication that the fitting is removeable. It appears that it may be an adapter that you're looking at, if so, it would have fine threads- aka aerator threads to attach to the faucet body. I suspect you may be trying to find an adapter for an adapter. Check closely, you may be able to back it out, try to get a pair of pliers on it with a non-distorting grip, e.g. rag or piece of rubber to work it back & forth to see if it's threaded into the faucet body. If the shower hose attaches to that fitting, it's probably 1/2" NPT or straight pipe thread as others suggested. But my bet would be an adapter in the faucet body.
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Old 05-19-2019, 09:35 AM   #15
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Just unscrew the current one and take it to home depot and match it. They have many sizes.
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Old 05-20-2019, 08:51 AM   #16
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Not sure about your area HD, but in ours the faucet boxes are all wired closed. I was replacing the galley faucet and took it in and did find an open box but the fittings are different, not to say I could make up adapters, just didn't feel like it, went to local expensive marine store and bought one that fit and connected perfectly.

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Just unscrew the current one and take it to home depot and match it. They have many sizes.
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Old 05-20-2019, 08:56 AM   #17
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Not the faucet section but in the plumbing parts section they have a large display of aerators.
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Old 05-20-2019, 09:00 AM   #18
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Oh ok, sorry - gotcha
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Old 05-20-2019, 12:59 PM   #19
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Menards has an excellent plumbing parts section as well...
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Old 05-20-2019, 05:50 PM   #20
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Try here: https://www.midlandhardware.com/sear...rch_return=all
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