Wilson Seater Stem Thread Pitch

[GSPV]

Guys, been away too long. Could someone remind me of the thread pitch on Wilson seater stems?

TIA,

Greg J

 

[GSPV]

Looks like it is 20 TPI = .050” per full rotation.

 

[jerseyjoe]

Their website lists it as 3/8"-24.

 

[GSPV]

I looked on their site in the PDF for the inline seaters in the Resources folder. They list it exactly as you do.

I got the 20 TPI in the Resources on another site. Guess I’ll have to update them. <sigh>

Thanks for your help.

 

[Erik Cortina]

It’s 20 TPI.

 

[chop house]

It’s 20 TPI.

just measured mine, with pitch gauge and by rotation. It is 24 tpi, moving the stem 0.0417 per turn.

 

[Erik Cortina]

just measured mine, with pitch gauge and by rotation. It is 24 tpi, moving the stem 0.0417 per turn.

That’s strange. Makes no sense.

 

[chop house]

That’s strange. Makes no sense.

the one i measured is a current production wilson chamber die. i also have vintage ones i didn't pull out. i'll check the old ones in a while, just to make sure.

 

[geraldgee]

The instructions say .042 per full turn which would make it real close to 24 tpi.