I buy and use angle stops all the time. I understand why the 1/2 inch nut has a hole, so it can let the water pipe fit through and uses a ferrule to use compression nut setup.

But why does the 3/8 nut have a hole for? I always use a water supply line to connect to the threads and toss out the nut with hole in it.

so who's using the hole through the nut for? Is it for some sort of copper tubing that is setup as a compression fit? Is it an old or new method?

Is this nut with a hole used a lot or do people normally just use a screw-on water supply line instead?

here is a photo of nuts with holes:
[drive.google.com]



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Yes, the 3/8 compression nut (5/8 in wrench size) is used with 3/8 copper tubing. I still use copper tubing for dishwasher water supply.
I use the 1/4 in compression nuts, with 1/4 in copper tubimg, for fridge and humidifier water supplies.

I guess copper tubing is not sold at the Home Depot. Do you get your copper tubes from a plumbing supply store in your area instead?



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The big box stores do sell copper tubing, both hard copper tubing and soft copper tubing. Common hard copper are from 1/2" to 3/4" to 1" in usually 10' lengths, and common soft copper in 1/2", 3/8", 1/4" in 25', 50' coils. The 3/8" soft copper tubing can be shaped to provide a more professional look on toilet supply installations and some pedestal sink installations where these lines are partially exposed.

I think they also carry soft copper coils in the air conditioning area for AC installation but the normalized sizes in that trade are a bit different from plumbing.

You can get copper tubing at plumbing supply stores as well. Sometimes when I need a short piece of soft copper in 1/2" and 3/4", say only 6' in lengths I could buy them by the ft in the supply store and not the entire coil like at the box stores.

oh great. So I can use the same water angle and add copper tubes with the ferrule and compression nut instead of those rubber flex water lines? I'd rather do that since chances of copper busting open when not home and flooding home is not as high a chance right?

Chances of properly installed copper tubing bursting = 0%. You can sleep well at night.

If you want to use copper for faucet or toilet supply, you should get ones pre-formed at one end
[www.homedepot.com]

For a more finished look, you can also get the soft copper tubes plated in chrome and many metallic finishes.

Home Depot in my area will only send it as a delivery. It's not sold in the store. So I can't get a look at it first at the store before buying.

What side goes into which item? I see open round end and then some sort of screw on one end or ?

Hard to tell by the photo they provide.

The preformed ball end will fit into the faucet. The other end, after the tubing is cut to the required length, fits into the angle stop.

Thanks for all your input! I'm going to give it a try...



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The chrome toilet supply is a classic look but very hard to do. Bending to the proper shape without kinking is difficult and no surprise why the braided hoses were immediately popular. Good luck and post a pic when you get it installed!



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