How do garden hose threads work?

[fuzzybabybunny]

I'm trying to get an adapter that converts a male threaded garden hose spigot to a 1/2" ID hose barb.

BrassCraft 1/2-in x 3/4-in Barbed Barb x Garden Hose Adapter Fitting

https://m.lowes.com/pd/BrassCraft-1-2-in-x-3-4-in-Barbed-Barb-x-Garden-Hose-Adapter-Fitting/50380954

But garden hoses come predominantly in 5/8". So why does the link above say it's for a garden hose? And what is 5/8" even referring to?

When I measure the spigot, the dimensions are:

5/8" inner diameter
15/16" diameter not including thread
1-1/16" with thread

I measure another spigot and it's

3/4" inner diameter
15/16" diameter not including thread
1-1/16" with thread

What the hell?

 

[Ferzerp]

Garden hose threads work here: https://forums.anandtech.com/forums/home-and-garden.67/

 

[pete6032]

How do garden hose threads work

Usually the OP posts a question about garden hoses and then people with experience respond to the question.

 

[BoomerD]

Garden hoses should readily be available in 1/2, 5/8' & 3/4".

 

[preCRT]

Hoses come in different sizes and widths,

 

[[DHT]Osiris]

Usually the OP posts a question about garden hoses and then people with experience respond to the question.

So would you say this is a garden hose thread? Or a garden hose thread thread? Or a garden hose thread about threading thread? If we created a blanket that looked like this thread, would it use garden host thread about threading thread thread thread?

 

[fuzzybabybunny]

Garden hoses should readily be available in 1/2, 5/8' & 3/4".

What are those measurements referring to? Inner hose diameter? Outer hose diameter? Spigot thread?

I'm guessing that the spigot thread size should be universal and the 1/2", 5/8", and 3/4" numbers are all referring to the inner diameter of the hose? You should be able to hook all of these different hoses to the same spigot without an adapter.

 

[herm0016]

What are those measurements referring to? Inner hose diameter? Outer hose diameter? Spigot thread?

I'm guessing that the spigot thread size should be universal and the 1/2", 5/8", and 3/4" numbers are all referring to the inner diameter of the hose? You should be able to hook all of these different hoses to the same spigot without an adapter.

Yes. but i do not understand what you are trying to do. sounds like you just need a garden hose end. https://www.newegg.com/Product/Product.aspx?Item=9SIA1SZ50D3943

 

[BrainEater]

Yes , spigot thread.
A 'garden hose thread' is a 3/4 inch concentric thread.it's not the same as 3/4 inch NPT.
You need a 3/4 NPT to 3/4 'hose end' adapter first....then you can screw whatever you need to the NPT side.
edit ;
After checking that link , that's what you want.it's 3/4" hose thread to 1/2 " hose barb.

 

[BoomerD]

What are those measurements referring to? Inner hose diameter? Outer hose diameter? Spigot thread?

I'm guessing that the spigot thread size should be universal and the 1/2", 5/8", and 3/4" numbers are all referring to the inner diameter of the hose? You should be able to hook all of these different hoses to the same spigot without an adapter.

Correct. Hose sizes are i.d.
Hose bibs (spigots) in the USA generally have universal threads. (Garden hose threads are garden hose threads)

That adapter in the OP should work just fine.

 

[IronWing]

Righty tighty, lefty loosy.

 

[fuzzybabybunny]

Yes , spigot thread.
A 'garden hose thread' is a 3/4 inch concentric thread.it's not the same as 3/4 inch NPT.
You need a 3/4 NPT to 3/4 'hose end' adapter first....then you can screw whatever you need to the NPT side.
edit ;
After checking that link , that's what you want.it's 3/4" hose thread to 1/2 " hose barb.

See photo.

The outside diameter of this garden hose spigot from thread tip to thread tip is ~1-1/16". The outside diameter if you were to remove the threads is ~15/16". The inner diameter of this spigot is 5/8". There is nothing that measures 3/4" anywhere here.

This spigot is coming from a water drum, but garden hoses hook up to it just fine.

 

[dullard]

Garden hoses should readily be available in 1/2, 5/8' & 3/4".

5/8 feet? I highly doubt that garden hoses are readily available in that size.

 

[Sukhoi]

Nominal sizing

 

[nakedfrog]

Magnets.

 

[fuzzybabybunny]

See photo of the female end of a hose:

Internal diameter of the hose itself is 5/8".

Internal diameter of the spigot thread fitting is ~1-1/16".

Still, nothing that measures 3/4" anywhere.

 

[IronWing]

See photo.

The outside diameter of this garden hose spigot from thread tip to thread tip is ~1-1/16". The outside diameter if you were to remove the threads is ~15/16". The inner diameter of this spigot is 5/8". There is nothing that measures 3/4" anywhere here.

This spigot is coming from a water drum, but garden hoses hook up to it just fine.

Is that marketed as a hose fitting? Looks like a big cooler.

 

[gorcorps]

You are making this far too difficult. A garden hose end is a garden hose end, the adapter you linked will fit onto the male end of a garden hose spigot

I believe the 3/4" mentioned in the adapter is the length of the barbed end, nothing to do with the garden hose side as far as I can tell

 

[herm0016]

3/4 and 1/2 pipe are the references. those pipe sizes don't measure .5 or .75 in any dimension.

Pipe sizes do not refer to any physical dimensions. The outside diameter of each pipe must be measured for size identification. For example, a 3/4" NPT pipe thread has an outside diameter of 1.050 inches.

rain barrel??


I have a 275 gallon rain water tank. works well.

 

[Sukhoi]

You are making this far too difficult. A garden hose end is a garden hose end, the adapter you linked will fit onto the male end of a garden hose spigot

I believe the 3/4" mentioned in the adapter is the length of the barbed end, nothing to do with the garden hose side as far as I can tell

The 3/4" is the size of the garden hose side. Again, nominal sizing.

 

[BrainEater]

Yep.
Here , this will help ;
https://www.plumbingsupply.com/pipethreadsizing.html

 

[Micrornd]

How 'bout a summation? -

1) Garden hose thread (GHT) is a straight, non-taper thread and depends on a gasket or o-ring to seal.
2) Garden hose size is the nominal ID of the hose itself, not the connector, not the valve and not any attachments.
3) GHT and NPT are not interchangeable, but are close enough that one can be screwed into the other. If pressure is kept low enough, they may even not leak
4) As others mentioned, what the OP appears to have is a rain barrel. These are normally equipped with a valve that has GHT, so that the water in the barrel can be used to water plants.
5) The OP's 1st post links a repair fitting used for the female end of a 1/2" garden hose. It is a cheap, non-rotating female end that he will wish he had spent the time and money on finding a rotating end female repair fitting on, if he connects and disconnects it on a regular basis.
6) 3/8, 1/2, 5/8 and 3/4 GHT all use the same size OD couplers. GHT is also available in 1" and 1-1/4" sizes and the couplers and fittings are upsized. While 1-1/2" and up hoses are normally referred to as FHT (fire hose thread), they follow the same pattern of straight non-tapered threading depending on a gasket or o-ring to seal, that will in most cases successfully connect to NPT, if pressures are kept low enough.

 

[NutBucket]

So as usual, FBB is making things way more complicated than they really are.

 

[BrainEater]

No , actually pipe sizing / thread sizing is a giant pain in the ass.It's the thing that's more complicated than it needs to be.
You have to understand , pipe size and thread specifications have been developed in many different countries, over a hundred years at least.They are all effing different.

I help run a brewery.I have equipment from every part of the world.I personally deal with 10 different thread types damn near every day.
I have had to stop trying to 'figger out' what thread it is , and just TIG weld an NPT on there.
-----
Here's what 'Nominal Sizing' means :
https://en.wikipedia.org/wiki/Nominal_size

This is just the beginning of the vagueness.
-----
Once you Americans get with the metric system , we can move on and fix all this.*



*edit: If we start now , it'll be 100 years and we will all have understandable , common to everyone pipe and threads, the world over.

 

[Scarpozzi]

As stated Garden hoses are 3/4"... MGHT or GHT is usually what they're coded as. Just remember that they aren't all that complicated and can be brass or polymer(nylon) whatever. You just have to remember not to overtighten the non-metal fittings because ultimately the gasket on the female side of the connection is what makes it watertight (10% of the time).