2
$\begingroup$

Does anybody know what the thread size is on a bicycle pump connector, such as this one?

enter image description here

Note: I'm not talking about the female end that goes on the valve stem on the bike (that's a Schrader valve thread), I'm talking about the male end that connects with the pump. It looks almost like an M5, but doesn't quite fit in an M5 female connector.

I have spent quite a bit of time googling the question, but have drawn a blank so far.

Improve this question
$\endgroup$
2
  • $\begingroup$ As it is usually in soft metal, the UNC or Whitworth spring to mind... $\endgroup$ – Solar Mike Nov 23 '17 at 12:04
  • 1
    $\begingroup$ Maybe this question is more suitable for bicycles.stackexchange.com $\endgroup$ – False Identity Nov 23 '17 at 14:24
2
$\begingroup$

I'm pretty sure it's the same thread as a Presta valve thread.

Which is defined by ISO 4570 designation "5v2", and is similar to "12-24 UNC"

(edit to add ISO reference)

Improve this answer
$\endgroup$
2
  • $\begingroup$ So it is! Thank you. You don't happen to know if there any off-the-shelf thread adapters between say M5 and Presta threads? $\endgroup$ – am304 Nov 28 '17 at 12:40
  • $\begingroup$ no, sorry I don't. $\endgroup$ – LittleNose Nov 28 '17 at 13:05
0
$\begingroup$

3/16 BSF (3/16in dia 32 turns per inch)

Improve this answer
$\endgroup$
1
  • 2
    $\begingroup$ Do you have any reference to go with this? There is already an accepted answer that differs from what you gave. $\endgroup$ – hazzey♦ Jun 20 '18 at 21:35

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.