What is the exact tap & die size for a USA garden hose thread (it's not NH)
Brent
USA garden hose thread; but one needs to know the exact size of the GHT
which seems to be an openly held secret.
Can we confirm what the typical USA garden hose thread tap and die size
would be?
According to research, it's NOT National Hose (NH) thread; although it's
similar, it's Garden Hose Thread (GHT).
The best I can find that describes GHT is this obscure Yahoo reference:
http://answers.yahoo.com/question/index?qid=20070131022106AAKkLuz
If that's right, the tap and die size for GHT would be:
O.D. 1.0625 at 11.5 threads per inch
But, does anyone truly know what GHT taps and die sizes are
(and where we can get a real GHT tap and die set)?
Terra Arcane
> If that's right, the tap and die size for GHT would be:
> O.D. 1.0625 at 11.5 threads per inch
Wikipedia concurs at an outside diameter of 1.0625 inches and a pitch of
11.5 tpi ( http://en.wikipedia.org/wiki/Garden_hose ) but
rec.crafts.metalworking say it's O.D. is 1.031. and has 11.5 TPI.
Early in April of 2004, the folks at rec.crafts.metalworking had some
information but not enough (http://tinyurl.com/az4p9). They concluded
nobody makes taps and dies for garden hose thread, I believe.
"A garden hose connector has a nominal size designation of 1 inch, the
actual O.D. is 1.031. and has 11.5 TPI. 1.031 is real close to the O.D.
of 3/4 inch pipe (1.050) but 3/4 inch pipe is threaded at 14 TPI. 1-inch
pipe has an O.D. of 1.315. and has 11.5 TPI. So it looks like straight or
tapered isn't the problem, no pipe die is near the correct size."
and
"Hose coupling threads do not match any standard NPS or NPT thread.
The pitch diameter (0.9875"-1.0060") is almost the same as 3/4"-NPS
(0.9820"-0.9873"), but the 11.5 TPI pitch matches 1"-NPS, not
3/4"-NPS (14 TPI)."
and
"The thread spec. for garden hose fittings is ANSI/ASME B1.20.7 (see
Machinery's Handbook) and the designation is NHR" 1-800-993-4353 (Field
Tool Supply).
Those at misc.consumers.frugal-living found a freely available tap and die
set but I can't seem to find their link anymore.
http://www.craftkb.com/Uwe/Forum.aspx/metalworking/11243/Tap-Die-for-hose-threads
"If you mean garden hose, the proper designations are:
.75-11.5NH (cut, formed, or rolled)
.75-11.5NHR (thin wall formed)
However, I don't see how you could make these with just a tap or die,
as they involve a pilot, a relief, and a different lead-in thread angle,
not just threads. Google ".75-11.5NH tap die" = 0 hits."
Orak Listalavostok
> However, I don't see how you could make these with just a tap or die,
> as they involve a pilot, a relief, and a different lead-in thread angle,
> not just threads. Google ".75-11.5NH tap die" = 0 hits."
http://www.diy-forum.net/re-garden-hose-end-re-thread-die-t120356.html
"As noted, you're probably not going to find a die or tap for a garden
hose thread. The problem is, the male ends aren't cut threads anyway
on anything except perhaps the brass NPT/hose adapters--they're formed.
The female ends are so shallow that you would need a bottom tap and
probably couldn't reach but a portion of the first thread, anyway, even
if you had one."
Harold & Susan Vordos
"Orak Listalavostok" <or...@listalavostok.net> wrote in message
news:i3tcac$qs9$1...@speranza.aioe.org...
> On Tue, 10 Aug 2010 22:23:13 -0700, Terra Arcane wrote:
>> However, I don't see how you could make these with just a tap or die,
>> as they involve a pilot, a relief, and a different lead-in thread angle,
>> not just threads. Google ".75-11.5NH tap die" = 0 hits."
>
> http://www.diy-forum.net/re-garden-hose-end-re-thread-die-t120356.html
the male ends aren't cut threads anyway
> on anything except perhaps the brass NPT/hose adapters--they're formed.
Not always. There are machined brass ends available---but rarely (if ever)
found on cheap hoses.
I have machined brass ends on many of my hoses (I am a retired machinist---I
know the difference).
Harold
woodworker88
> Not always. There are machined brass ends available---but rarely (if ever)
> found on cheap hoses.
> I have machined brass ends on many of my hoses (I am a retired machinist---I
> know the difference).
>
> Harold
Machined maybe, but not with a tap. More than likely they're either a
cut on a CNC lathe or thread milled or whirled on a dedicated machine.
DanG
http://www.tamparubber.com/product_pages/coupgard.htm
Go to any hydraulic hose repair shop, they often have the fittings
or make up garden hose sections from high quality air hose
material. They even survive getting driven over.
--
~~~~~~~~~~~~~~~~~~~~
DanG
Keep the whole world singing . . .
"Brent" <beemd...@Use-Author-Supplied-Address.invalid> wrote in
message news:08eaf0751cc7813a...@tioat.net...
Monkey Butler
> On Wed, 11 Aug 2010 05:07:34 +0000 (UTC), Brent wrote:
> > If that's right, the tap and die size for GHT would be:
> > O.D. 1.0625 at 11.5 threads per inch
>
> Wikipedia concurs at an outside diameter of 1.0625 inches and a pitch of
> rec.crafts.metalworking say it's O.D. is 1.031. and has 11.5 TPI.
>
> Early in April of 2004, the folks at rec.crafts.metalworking had some
> information but not enough (http://tinyurl.com/az4p9). They concluded
> nobody makes taps and dies for garden hose thread, I believe.
>
> "A garden hose connector has a nominal size designation of 1 inch, the
> actual O.D. is 1.031. and has 11.5 TPI. 1.031 is real close to the O.D.
> of 3/4 inch pipe (1.050) but 3/4 inch pipe is threaded at 14 TPI. 1-inch
> pipe has an O.D. of 1.315. and has 11.5 TPI. So it looks like straight or
> tapered isn't the problem, no pipe die is near the correct size."
>
> and
>
> "Hose coupling threads do not match any standard NPS or NPT thread.
> The pitch diameter (0.9875"-1.0060") is almost the same as 3/4"-NPS
> (0.9820"-0.9873"), but the 11.5 TPI pitch matches 1"-NPS, not
> 3/4"-NPS (14 TPI)."
>
> and
>
> "The thread spec. for garden hose fittings is ANSI/ASME B1.20.7 (see
> Machinery's Handbook) and the designation is NHR" 1-800-993-4353 (Field
> Tool Supply).
>
> Those at misc.consumers.frugal-living found a freely available tap and die
>
> "If you mean garden hose, the proper designations are:
>
> .75-11.5NH (cut, formed, or rolled)
> .75-11.5NHR (thin wall formed)
>
> However, I don't see how you could make these with just a tap or die,
> as they involve a pilot, a relief, and a different lead-in thread angle,
> not just threads. Google ".75-11.5NH tap die" = 0 hits."
http://www.widell.com/popular%20special%20supplement%2004-09-01.pdf
Scroll down to 3/4-11-1/2. You will see a garden hose size tap listed.
Don't know about the die though.
Kat Rabun
> Good machined solid brass are available:
> http://www.tamparubber.com/product_pages/coupgard.htm
What most people do to clean up a garden hose is take an old garden hose
with good GHT fittings and slice a sharp channel crosswise across the
threads with a triangular file. This self-tapping channel should be shallow
at the beginning and as deep as you can get it near the bottom.
Then they use this "thread cutter" as a thread chaser on all their garden
hoses. Works both for the male and female ends of your lawn garden hose.
If you can find steel garden hose repair fittings, it works even better
than the sliced brass garden hose fittings to clean up the threads.
mkir...@rochester.rr.com
Address.invalid> wrote:
> What most people do to clean up a garden hose is take an old garden hose
> with good GHT fittings and slice a sharp channel crosswise across the
> threads with a triangular file. This self-tapping channel should be shallow
> at the beginning and as deep as you can get it near the bottom.
No, "most people" certainly do not bother. They will either cut the
hose and install a repair end, or throw the entire hose away.
The garden hoses I see for sale, even the so-called "good" ones, have
stamped brass ends. These are not re-threadable, or repairable in any
way. They must be sliced off and replaced.
Ed Huntress
<mkir...@rochester.rr.com> wrote in message
news:0883a921-2d15-481f...@j8g2000yqd.googlegroups.com...
Ho-ho! You must be in another newsgroup. Here on RCM, we'd machine a female
die from A1 tool steel, calculate a appropriate load of Red Dot powder and
primer, and re-shape the end with explosive forming. As a bonus, it would
really clean out the inside of that hose.
It couldn't take more than four or five hours of work to save us from having
to buy a $3 replacement end. d8-)
--
Ed Huntress
dpb
...
> Ho-ho! You must be in another newsgroup. Here on RCM, we'd machine a female
> die from A1 tool steel, calculate a appropriate load of Red Dot powder and
> primer, and re-shape the end with explosive forming. As a bonus, it would
> really clean out the inside of that hose.
>
> It couldn't take more than four or five hours of work to save us from having
> to buy a $3 replacement end. d8-)
Chuckle... :)
I've done things like re-round them after crushing, certainly, but not
by explosive forming...
--
rangerssuck
Or hand write the G-code to CNC a pattern and then cast a new end. But
first you have to build the machinery and the furnace...
Gunner Asch
And Bullseye would be better for explosive forming than Red Dot.
"A conservative who doesn't believe? in God simply doesn't pray;
a godless liberal wants no one to pray. A conservative who doesn't
like guns doesn't buy one; a liberal gun-hater wants to disarm us all.
A gay conservative has sex his own way; a gay liberal requires us all
to watch and accept his perversion and have it taught to children.
A conservative who is offended by a radio show changes the station;
an offended liberal wants it banned, prosecuted and persecuted."
Bobby XD9
Tony
For Gawds sake, buy a fricken heavy duty brass replacement like you were
shown. They aren't cheap but they can be driven over and not distort.
And it's good for life! When the hose is shot you keep the good
replacement end for when your next hose has a problem.
touchd...@gmail.com
DerbyDad03
Fred McKenzie
I think a water hose is close to a standard pipe thread, if you want to
try some pipe fittings to find out.
The problem is that a hose thread is loose, so it can be turned by hand.
It depends on a soft washer to seal between the end of the hose and the
faucet or hose it attaches to. A tap would need to cut a flat surface
at the end of the thread, for a washer to seal against.
Fred
dpb
> In article<cb32367e-5a32-4200...@googlegroups.com>,
> touchd...@gmail.com wrote:
>
>> Could a tap be made for Water Hose Threads ?
>
> I think a water hose is close to a standard pipe thread, if you want to
> try some pipe fittings to find out.
Close, but no cigar...look at a male/male NPT/GHT adapter and you can
easily see the difference. No fitty if try reversing ends...
--
Kurt Ullman
accommodate a backup protector thingy which has the hose thread on it. I
can't get the hose to match up directly to the faucet.
--
³Statistics are like bikinis. What they reveal is suggestive,
but what they conceal is vital.²
‹ Aaron Levenstein
Aharon Chodorow
>> Could a tap be made for Water Hose Threads ?
>
:)
zeb...@sympatico.ca
dwa...@vistamfg.com
al_gone
> 3/4"-11 1/2 NH HSS Die
not including the tap handle. Yoy can get a handle for around $100 new. You
could alternatively buy a lot of hoses for that.
--
for full context, visit https://www.homeownershub.com/maintenance/what-is-the-exact-tap-die-size-for-a-usa-garden-hose-threa-458832-.htm
ROBERT WIECKOWICZ
Garden hose connections are 12 tpi
Erik
http://catalog.tapcotaps.com/item/all-categories/popular-special-taps-right-hand-/72518
From Tapco taps. The reason no one can find GHT taps.. is because that's the
thread name.. the TAP name is Nation Hose Thread 3/4 11 1/2 NH The link is
for the Best.. too expensive, buy one from china. Remember that it's a meaty
3/4" hand tap so breaking it will be horrifying, buy a good one .. :)
Erik
http://catalog.tapcotaps.com/item/all-categories/popular-special-taps-right-hand-/72518
From Tapco taps. The reason no one can find GHT taps.. is because that's the
sell dies too)
RJD00IS
> But, does anyone truly know what GHT taps and die sizes are (and where we can
get a real GHT tap and die set)?
05265 Mr. Thread Cleaner" made from Hardened plated steel for corrosion
resistance for under $20. For a Male Tap I purchased a Stainless Steel 3/4
NPT to 3/4 GHT adapter from eBay for about $8 and took my Dremel Rotary Tool
and cut angled slots on the side of the GHT threads to make it look and work
like a tap. While both these items Tap and Die may not be used for cutting
new threads where none exist, it works great for cleaning up existing and
damaged threads and for a very small cost, considering you can use these again
and again to clean up both male and female Garden Hose Ends as well as
faucets. You may even be able to help your neighbors hose ends as well with
yours.
Joe Dokes
--
For full context, visit https://www.homeownershub.com/maintenance/what-is-the-exact-tap-die-size-for-a-usa-garden-hose-threa-458832-.htm
Jim Wilkins
news:166953141a701101$1$1096661$4626...@news.newsgroupdirect.com...
https://dengarden.com/gardening/The-Complete-Guide-to-Hose-Fittings
1 1/16 is one and one sixteenth inch, not eleven sixteenths.
Can you drill out the setscrew and clean up burred faucet threads with a
small triangular file? Although they aren't required here I use those
screw-on check valves to prevent backflow from sun-heated hoses but I remove
the setscrew, and take them off in winter so the faucet can drain and not
freeze and burst (again). I put brass quick connects on the check valve and
hose ends so disconnecting the hose doesn't unscrew the valve. Just in case,
the first short hose section at the faucet is rated for drinking water.
micky
>
>Can you drill out the setscrew and clean up burred faucet threads with a
>small triangular file? Although they aren't required here I use those
>screw-on check valves to prevent backflow from sun-heated hoses but I remove
>the setscrew, and take them off in winter so the faucet can drain and not
>freeze and burst (again). I put brass quick connects on the check valve and
>hose ends so disconnecting the hose doesn't unscrew the valve. Just in case,
>the first short hose section at the faucet is rated for drinking water.
interrupted, why would anything flow backwards.
And if it flow backwards, is it going to be more than an inch or two?
It's 8 feet from my garden faucet to the main cold water pipe. How is
the water ever going to flow back 8 feet.
And if it does, it will get diluted by the incoming clean water.
And then what are the odds I'll drink it, rather than flush the toilet,
take a shower, or wash the dishes?
And if you do get a little garden hose poison, it will build up your
resistance? Like with snake poison.
Who has not drunk out of the garden hose already?
Tekkie©
On Fri, 05 Mar 2021 14:54:01 -0500, micky posted for all of us to digest...
water supply.
--
Tekkie
Rod Speed
"micky" <NONONO...@fmguy.com> wrote in message
news:mm254gdj1f5dkugo0...@4ax.com...
> <murat...@gmail.com> wrote:
>
>>
>>Can you drill out the setscrew and clean up burred faucet threads with a
>>small triangular file? Although they aren't required here I use those
>>screw-on check valves to prevent backflow from sun-heated hoses but I
>>remove
>>the setscrew, and take them off in winter so the faucet can drain and not
>>freeze and burst (again). I put brass quick connects on the check valve
>>and
>>hose ends so disconnecting the hose doesn't unscrew the valve. Just in
>>case,
>>the first short hose section at the faucet is rated for drinking water.
> What is this backflow stuff? If you're
> water supply is never interrupted,
> why would anything flow backwards.
> And if it flow backwards, is it going to be more than an inch or two?
> It's 8 feet from my garden faucet to the main cold water pipe.
> How is the water ever going to flow back 8 feet.
> And if it does, it will get diluted by the incoming clean water.
> And then what are the odds I'll drink it, rather than
> flush the toilet, take a shower, or wash the dishes?
> And if you do get a little garden hose poison,
> it will build up your resistance? Like with snake poison.
> Who has not drunk out of the garden hose already?
Jim Wilkins
https://en.wikipedia.org/wiki/Backflow_prevention_device
"Water pressure may fail or be reduced when a water main bursts, pipes
freeze, or there is unexpectedly high demand on the water system (for
example, when several fire hydrants are opened)."
Rod Speed
"Tekkie©" <Tek...@comcast.net> wrote in message
news:AGx0I.241580$MT.1...@fx35.iad...
Jim Wilkins
> water supply is never interrupted,
But they all can be occasionally.
Personally I've seen and rearranged a garden hose submerged in a swimming
pool to refill it in the spring, to raise the level high enough to filter
out the leaf debris, dead bugs, bird crap and green algae. The owner had
covered the pool but a seam ripped.
bob prohaska
> "micky" wrote in message news:mm254gdj1f5dkugo0...@4ax.com...
>
> In alt.home.repair, on Fri, 5 Mar 2021 07:20:15 -0500, "Jim Wilkins"
> <murat...@gmail.com> wrote:
>
>>
>>Can you drill out the setscrew and clean up burred faucet threads with a
>>small triangular file?
preventer on either side of the setscrew and then break out the screw.
The body is brass and not very strong, the screws are relatively hard.
The saw cuts did no substantial harm to the faucet, the setscrew galling
was minimal and easy to file out.
hth,
bob prohaska
Peeler
is an insecure and worthless individual who has discovered he can
enhance his own self-esteem in his own eyes by playing "the big, hard
man" on the InterNet."
https://www.pcreview.co.uk/threads/rod-speed-faq.2973853/
--
Norman Wells addressing trolling senile Rodent:
"Ah, the voice of scum speaks."
MID: <g4t0jt...@mid.individual.net>
Ed Pawlowski
work we had to have them on all pressure vessels, like boilers. Our
boilers had much higher pressure than the town water system.
At home we have to have them on the lawn sprinklers. I pay $25 a year
for someone to come out and inspect it. Never saw the guy but there is
a new tag on it and a bill in the mail.
I'd like to see good some statistics on how much good they do. This
gives a number but does not say if it is one year or a hundred years.
https://www.plumbtimesc.com/the-importance-of-having-a-backflow-prevention-device-at-home-or-work/
A report by the CDC confirmed that more than 1006 people across 19
states in the US had some form of sickness related to water
contamination. Contaminated water can spread diseases in a split second
due to the interconnection of water systems. Backflows tend to redirect
contaminated water in homes.
trader_4
only include fresh water systems? Public water systems? Or is it any water
contamination, eg water in boats, RVs, drinking water from a stream, etc.
Needing to inspect the backflow thing once a year is certainly excessive.
Another govt program to rip you off and create more govt jobs. Even if they
were going to inspect them, once every 5 years would be enough. Thankfully
in NJ there is no inspection at all. There might be an inspection now when
first installed, but 25 years ago when i had mine put in, they didn't even require
that.
