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timelord · 31 December 2015, 01:32 AM

Does anyone have any data on the measurement of the case tube exterior diameter which screws onto the crown of the day date 1803???

Is this size for the 1803 exterior tube part universal for all other day date crowns in the 36mm day date models ???

Many thanks in advance for any input

Rikki · 6 January 2016, 12:33 PM

part number for the original tube and crown were 24-6020 tube and 24-600-8 but have been replaced with monoblock crown 24-604-3 and tube 24-6330-0. Diameter of the threads appr. 4.32 to .33 MM's Good luck Rik

f-du-27 · 26 February 2016, 10:22 PM

Hello Rik

I put crown 24-600-0 on my Tudor from 1960 (with proper tube) and it does not fit because the stem cannot penetrate deep enough into the crown. No chance to press the crown gasket .

Has crown number 24-604-0 been improved on that point ?

Reading other posts, it seems I am not alone with the problem .

Best regards to timelord and Rik

31 December 2015, 01:32 AM	#1
timelord "TRF" Member Join Date: Mar 2007 Location: Margate Watch: your back Posts: 324	Crown thread size of case tube for day date??? Does anyone have any data on the measurement of the case tube exterior diameter which screws onto the crown of the day date 1803??? Is this size for the 1803 exterior tube part universal for all other day date crowns in the 36mm day date models ??? Many thanks in advance for any input

6 January 2016, 12:33 PM	#2
Rikki TechXpert Join Date: Jun 2009 Real Name: Rik Dietel Location: Seminole Fla Watch: 5512 s/s Sub Posts: 1,818	part number for the original tube and crown were 24-6020 tube and 24-600-8 but have been replaced with monoblock crown 24-604-3 and tube 24-6330-0. Diameter of the threads appr. 4.32 to .33 MM's Good luck Rik __________________ Century 21 Certified watchmaker Omega Service Provider Trained Omega OWME Certified. Rolex Parts Account Holder.

26 February 2016, 10:22 PM	#3
f-du-27 "TRF" Member Join Date: Nov 2009 Real Name: François Location: France Posts: 169	Hello Rik I put crown 24-600-0 on my Tudor from 1960 (with proper tube) and it does not fit because the stem cannot penetrate deep enough into the crown. No chance to press the crown gasket . Has crown number 24-604-0 been improved on that point ? Reading other posts, it seems I am not alone with the problem . Best regards to timelord and Rik

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