Correct Crown Thread Size for 0.9mm Stem (Gewinde 1/100)

Lages97 · Mar 10, 2026

Correct crown (gewinde 1/100)

I plan to buy a crown for a vintage tank-style watch before sending it to the watchmaker.

For a stem diameter of 0.9 mm, what is the correct measurement for the crown (gewinde 1/100)?

Thank you for the help.

JimInOz · Mar 10, 2026

You may also need to factor in the case/stem tube dimensions.

There are many generic crowns available on Boley.de

https://boley.de/en/shop/11.crowns

Also from Cousins in the UK.

https://www.cousinsuk.com/category/ordinary-simple-watch-crowns

JimInOz · Mar 10, 2026

PS: Your watchmaker should be able to determine a suitable crown and also source the part.

Correct Crown Thread Size for 0.9mm Stem (Gewinde 1/100)

Lages97

JimInOz

JimInOz

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