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+--- Thread: 19 tpi thread file (/showthread.php?tid=6521)
19 tpi thread file - Howard Wright - 17-08-2021
Hi All
Am I right in thinking that British Standard Pipe threads have a similar form to BSF and BSW?
I tried looking for a 19 tpi Whitworth file and drew a blank. Probably because 19 tpi is an Austin peculiarity. 19 tpi files are readily available in BSP thread format.
I guess that for a thread repair slight differences in the form of the thread are not that important.
Cheers
Howard
RE: 19 tpi thread file - Charles P - 17-08-2021
(17-08-2021, 01:38 PM)Howard Wright Wrote: Hi All
Am I right in thinking that British Standard Pipe threads have a similar form to BSF and BSW?
I tried looking for a 19 tpi Whitworth file and drew a blank. Probably because 19 tpi is an Austin peculiarity. 19 tpi files are readily available in BSP thread format.
I guess that for a thread repair slight differences in the form of the thread are not that important.
Cheers
Howard
BSF, BSW and BSP all have the same thread form.
Be careful with BSP Taper threads. Same TPI but a reducing depth form
c
RE: 19 tpi thread file - Howard Wright - 17-08-2021
Hi Charles
Thank you!
A previous owner has given the ball end of the torque tube I’m working on a whack!
.Cheers
Howard
RE: 19 tpi thread file - Robert Foreman - 17-08-2021
Howard,
the thread for the gland nut in the torque tube isn't 19t.p.i.
RE: 19 tpi thread file - Howard Wright - 17-08-2021
Hi Robert
Thanks for noticing. My thread gauge seemed to indicate it was. What should it be?
Cheers
Howard
I’ve just rechecked and I think it might be 20 tpi. I was so used to seeing 19 on other threads I just assumed it was. Once again thanks.
RE: 19 tpi thread file - Bob Culver - 17-08-2021
Can often sort with a sharp edged riffler file