Case back thread?

I would like to find a See-through case back fory RZE Endeavor. Does anyone know if most case backs have a common thread or are they proprietary?

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Nowadays, I think most brands use metric thread fine pitch sizes. For example, M31x0.5, Right handed thread with a 31 mm pitch diameter and a 0.5 mm fine pitch at an angle of 60°. It used to be only German brands that used standardized threads, with Swiss brands sometimes doing their own weird stuff.

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The downside is looking at the unfinished movement. Invicta decorates their NH35's . Also the seethru ones make it a couple mm thicker as a drawback. There are very few casebacks on the market unless its Seiko and most have to come with the case.

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OldSnafu

The downside is looking at the unfinished movement. Invicta decorates their NH35's . Also the seethru ones make it a couple mm thicker as a drawback. There are very few casebacks on the market unless its Seiko and most have to come with the case.

If I can find a case back that will work, I plan on either buying another rotor or modifying it.

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As @OldSnafu said, I know that Seiko SKX casebacks are fairly standardized, but this is normally not an item that can be easily swapped. Keep in mind that the caseback in most NH35 cases also presses against the spacer, meaning the depth of the case factors in.

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Demon27

If I can find a case back that will work, I plan on either buying another rotor or modifying it.

Ali has decals you can get for the rotor about 10 bucks

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This might be worth a question to my Omega AD as the Moonwatch now can have a see through case back. My one didn’t.