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Subject Author Date
Garden Hose End Re-thread Die NSN 08-27-2006
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Posted by Thomas Daniel Horne on August 27, 2006, 10:11 pm
NSN wrote:
> The male ends of many of my garden hoses have become somewhat chewed
> up and I want to re-thread them properly. I have looked in my Mc
> Master-Carr catalog under Die and GHT (Garden Hose Thread) but there
> is no listing for the proper die .. either re-threading or primary. I
> am sure that it is there under the proper size & pitch but I do not
> know what that might be. Any and all help would be appreciated.
>
> Norm

Norm
I believe you will find it far easier to install a new hose end. The
one shown at
<http://www.125west.com/Claber_Lawn_Garden_Watering_Systems_Solid_Brass_water_connector.html>
is probably your best option as it does not require an external clamp to
hold it on the hose.
--
Tom Horne

"people willing to trade their freedom for temporary security deserve
neither and will lose both" Benjamin Franklin

Posted by Richard J Kinch on August 27, 2006, 11:05 pm
NSN writes:

> I am sure that it is there under the proper size & pitch but I do not
> know what that might be.

Garden hose threads are ANSI/ASME standard B1.20.7.

The designation is:

.75-11.5NH (cut, formed, or rolled), or
.75-11.5NHR (thin wall formed).

See _Machinery's Handbook_ 26th edition, pp 1841-2.

I can't seem to find any sources for taps or dies, either.

Posted by NSN on August 28, 2006, 2:24 pm
On Sun, 27 Aug 2006 22:05:48 -0500, Richard J Kinch

>NSN writes:
>
>> I am sure that it is there under the proper size & pitch but I do not
>> know what that might be.
>
>Garden hose threads are ANSI/ASME standard B1.20.7.
>
>The designation is:
>
> .75-11.5NH (cut, formed, or rolled), or
> .75-11.5NHR (thin wall formed).
>
>See _Machinery's Handbook_ 26th edition, pp 1841-2.
>
>I can't seem to find any sources for taps or dies, either.

THANKS to all for your replies. I did locate a die at
www.tapcousa.com by using their 800 number and giving them the above
specs. They have two in stock which I left there since they wanted
$136.00 plus shipping to be relieved of one of them.

As someone mentioned, I can replace all my hoses for that amount.

I do have a standard pipe re-threading set and used its file with the
#12 grooves and it worked quite well but left a rough finish. I
smoothed it out a bit with the wire brush I use on my BBQ and it ended
up looking good. The problem I had before all this was that it would
not screw into my plastic quick-disconnects without serious binding.
All is well now helped a bit by silicone grease.

For those interested I did find an external threader (11.5) in the Mc
Master catalog but it was $89.00. A bit better than $136 but still a
bit expensive.

Again .. thanks to all.

Norm


Posted by BobK207 on August 29, 2006, 1:02 am

NSN wrote:
> On Sun, 27 Aug 2006 22:05:48 -0500, Richard J Kinch
>
> >NSN writes:
> >
> >> I am sure that it is there under the proper size & pitch but I do not
> >> know what that might be.
> >
> >Garden hose threads are ANSI/ASME standard B1.20.7.
> >
> >The designation is:
> >
> > .75-11.5NH (cut, formed, or rolled), or
> > .75-11.5NHR (thin wall formed).
> >
> >See _Machinery's Handbook_ 26th edition, pp 1841-2.
> >
> >I can't seem to find any sources for taps or dies, either.
>
> THANKS to all for your replies. I did locate a die at
> www.tapcousa.com by using their 800 number and giving them the above
> specs. They have two in stock which I left there since they wanted
> $136.00 plus shipping to be relieved of one of them.
>
> As someone mentioned, I can replace all my hoses for that amount.
>
> I do have a standard pipe re-threading set and used its file with the
> #12 grooves and it worked quite well but left a rough finish. I
> smoothed it out a bit with the wire brush I use on my BBQ and it ended
> up looking good. The problem I had before all this was that it would
> not screw into my plastic quick-disconnects without serious binding.
> All is well now helped a bit by silicone grease.
>
> For those interested I did find an external threader (11.5) in the Mc
> Master catalog but it was $89.00. A bit better than $136 but still a
> bit expensive.
>
> Again .. thanks to all.
>
> Norm

Norm-

Pretty cool / useful tool at McMaster

Replaceable Die External Thread Restorer 2630A12
Tool comes with dies for thread sizes 4, 5, 6, 7, 7 1/2, 8, 9, 10, 11,
11 1/2, 12, 14, 16, 18, 20, and 24 threads per inch.
OD range is 1 1/4" to 5".

but even a tool junkie such as I wouldn't buy one but I could see the
need for such a tool where LOTS of hose were in use. One could chase /
clean up the ends faster & cheaper than replacing

cheers
Bob


Posted by dpb on August 29, 2006, 9:56 am

BobK207 wrote:
> NSN wrote:
> > On Sun, 27 Aug 2006 22:05:48 -0500, Richard J Kinch
> >
...
> > >Garden hose threads are ANSI/ASME standard B1.20.7.
> > >
> > >The designation is:
> > >
> > > .75-11.5NH (cut, formed, or rolled), or
> > > .75-11.5NHR (thin wall formed).
...

> Pretty cool / useful tool at McMaster
>
> Replaceable Die External Thread Restorer 2630A12
> Tool comes with dies for thread sizes 4, 5, 6, 7, 7 1/2, 8, 9, 10, 11,
> 11 1/2, 12, 14, 16, 18, 20, and 24 threads per inch.
> OD range is 1 1/4" to 5".
>
> but even a tool junkie such as I wouldn't buy one but I could see the
> need for such a tool where LOTS of hose were in use. One could chase /
> clean up the ends faster & cheaper than replacing

It would require a heck of a garden hose w/ 1-1/4" OD minimum!!! :)

But even if it went to the 3/4" OD, garden hose ends are still thin
wall formed, not cut and not as deep as pipe thread. An NPT die of the
same diameter would cut through or nearly through the root diameter of
a formed NH thread.


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