sjpm
New Member
I need information on dimesions on an old pipe thread used in bathtub 30 yrs ago.
My plumber says it is 5/8 w.work
I appreciate it. Thx in advance.
JAG
My plumber says it is 5/8 w.work
I appreciate it. Thx in advance.
JAG
thread dimesion wit work
- Thread starter sjpm
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Maybe your plumber is right. It sure is hard to tell from this view point?
It had me stumped also David.
John
John
"Hello",
The Plumber MAY be Thinking of `WHITWORTH` which was the FIRST `Machined` Thread in the World - Although I imagine that He means a PIPE Thread [ British Standard Pipe Thread ?]
Here is a Quote about `British Standard Whitworth`:
The Whitworth thread was the world's first standard [1], devised and specified by Joseph Whitworth in 1841. Until then, every industry had used their own screw threads. The new standard specified a 55° thread angle and a thread depth of 0.640327p and a radius of 0.137329p, where p is the pitch. The thread pitch increases with diameter in steps specified on a chart. The Whitworth thread system was later to be adopted as a British Standard to become British Standard Whitworth.
There is a possibility that what he has Found is a 5/8" Whitworth Thread - as the approximately 55 Degree Pitch of the British Standard Pipe Thread is the same as the Whitworth Thread Pitch - BUT Were / Are British Imperial Pipe Threads in Use in the U.S. - E.G. 5/8" for Plumbing Pipework to a Bath Tap [Faucet] ??
"Regards to All"
CHRISM
The Plumber MAY be Thinking of `WHITWORTH` which was the FIRST `Machined` Thread in the World - Although I imagine that He means a PIPE Thread [ British Standard Pipe Thread ?]
Here is a Quote about `British Standard Whitworth`:
The Whitworth thread was the world's first standard [1], devised and specified by Joseph Whitworth in 1841. Until then, every industry had used their own screw threads. The new standard specified a 55° thread angle and a thread depth of 0.640327p and a radius of 0.137329p, where p is the pitch. The thread pitch increases with diameter in steps specified on a chart. The Whitworth thread system was later to be adopted as a British Standard to become British Standard Whitworth.
There is a possibility that what he has Found is a 5/8" Whitworth Thread - as the approximately 55 Degree Pitch of the British Standard Pipe Thread is the same as the Whitworth Thread Pitch - BUT Were / Are British Imperial Pipe Threads in Use in the U.S. - E.G. 5/8" for Plumbing Pipework to a Bath Tap [Faucet] ??
"Regards to All"
CHRISM
Last edited:
Learn something new every day.
Thanks Chrism
John
Thanks Chrism
John
If you notice, the original poster appears to be located in Milan.
Thanks for the interesting bit of history, Chrism.
Thanks for the interesting bit of history, Chrism.
"Hello Phishfood",
I had not noticed that they were in Milan - Although Europe has Pipe Sizes that do Not Match very well with what is used in the U.K. - Because the Whitworth Thread is the same 55 Degree Pitch as a British Pipe Thread - I suppose that it is NOT Inconceivable that there is a `European Thread` that matches this 55 Degree Pitch ?
Something that I Remember is that the `British Standard Pipe Thread` was `Universally Adopted` - BUT this could have been when it was First being `Mass Produced` regarding the Threading Equipment - Pipe and Fittings ?? [Mid to Late 1800`s ?] - This Could still be In Use on the Continent of Europe ? - It has `Lasted` here in the U.K. as being the `Best Pipe Thread`available.
Could You Please tell Me - Is the `British Standard Pipe Thread` [55 Degree Pitch] Used in the U.S. - But Called the `United States Standard Pipe Thread` ??
It would be Interesting to Know.
Thanks for Your comment johnjh2o
Regards,
Chris
I had not noticed that they were in Milan - Although Europe has Pipe Sizes that do Not Match very well with what is used in the U.K. - Because the Whitworth Thread is the same 55 Degree Pitch as a British Pipe Thread - I suppose that it is NOT Inconceivable that there is a `European Thread` that matches this 55 Degree Pitch ?
Something that I Remember is that the `British Standard Pipe Thread` was `Universally Adopted` - BUT this could have been when it was First being `Mass Produced` regarding the Threading Equipment - Pipe and Fittings ?? [Mid to Late 1800`s ?] - This Could still be In Use on the Continent of Europe ? - It has `Lasted` here in the U.K. as being the `Best Pipe Thread`available.
Could You Please tell Me - Is the `British Standard Pipe Thread` [55 Degree Pitch] Used in the U.S. - But Called the `United States Standard Pipe Thread` ??
It would be Interesting to Know.
Thanks for Your comment johnjh2o
Regards,
Chris
