Schraeder valve threads

This topic has 13 replies, 11 voices, and was last updated 13 January 2021 at 22:31 by Dougie Swan.

Viewing 14 posts - 1 through 14 (of 14 total)

Author

Posts
13 January 2021 at 12:44 #27889
Dougie Swan
Participant
@dougieswan43463
Advert

13 January 2021 at 12:44 #519543
Dougie Swan
Participant
@dougieswan43463
Hi

Can anyone tell me what size the thread is on the outside of a schraeder valve

Thanks

Dougie
13 January 2021 at 12:47 #519545
Jeff Dayman
Participant
@jeffdayman43397
They are .302" x 32 TPI on the outside.
13 January 2021 at 13:35 #519547
David Marks 2
Participant
@davidmarks2
Tracy Tools quote two sizes on their website.

https://www.tracytools.com/?keyword=schrad&route=product%2Fsearch
13 January 2021 at 13:56 #519550
noel shelley
Participant
@noelshelley55608
.302 sounds wrong ! 2 sizes ! There is the one used on smaller vehicles .202 od and a larger one for BIG vehicles. Cant find one at the moment. Noel Ah yes ! Valve cap size is .306" X32 or.8mm for cars.

Edited By noel shelley on 13/01/2021 14:25:44
13 January 2021 at 14:14 #519557
Chris Evans 6
Participant
@chrisevans6
All the sizes are on the net. I get away with 5/16" x 32 tpi for the bigger ones when making motorcycle retaining nuts. The bespoke taps and dies are pricey for the odd nut.
13 January 2021 at 14:21 #519559
JasonB
Moderator
@jasonb
Don't know what you class as a small vehicle Noel but this is a mountain bike tube, same fitting as all the cars I've ever had
13 January 2021 at 14:31 #519565
noel shelley
Participant
@noelshelley55608
I was thinking schrader valve not valve cap, so Yes jason your right ! That one is under size according to my schrader,michelin tool, .306". See edit. noel
13 January 2021 at 14:46 #519570
Clive Brown 1
Participant
@clivebrown1
There's also a Presta valve. 6mm od, Better for modern, very narrow rims.
13 January 2021 at 15:45 #519581
Bo’sun
Participant
@bosun58570
Going off topic, but don't forget Woods/Dunlop valves.
13 January 2021 at 15:53 #519582
Mick B1
Participant
@mickb1
Posted by Chris Evans 6 on 13/01/2021 14:14:04:

All the sizes are on the net. I get away with 5/16" x 32 tpi for the bigger ones when making motorcycle retaining nuts. The bespoke taps and dies are pricey for the odd nut.

Yep, that works fine to connect tyre inflators to run my stationary engines.
13 January 2021 at 15:54 #519583
old mart
Participant
@oldmart
Wikipedia has info on Schrader valves. I have seen them used in compressed air regulators at 3000psi, and the cores look just like the short version and are the same size.
13 January 2021 at 17:53 #519605
DC31k
Participant
@dc31k
For reference, including the term 'DIN 7756' in searches relating to tyre valve threads produces some good results.
13 January 2021 at 22:31 #519673
Dougie Swan
Participant
@dougieswan43463
Wow

Thankyou for all the rapid replies

This forum never fails to deliver

Dougie
Author

Posts