165.024 Case tube dimensions.

You have a completely different case number in the title than in the body of your message. I assume what you are after is the 165024 in the body of the post, and not 154024 in the title. Note that you really have to be specific on what case you have.

For the 165024 the crown is 069ST42028 and the case tube is 090ST1306 - this is not a screw down system.

For the 166024 the crown is 069ST42028 and the case tube is 090ST9002 - this is not a screw down system.

For the 165024SP case, the crown is 069ST42062 and the case tube is 090ST0133- this is a screw down system.

For the 166024SP case, the crown is 069ST42062 and the case tube is 090ST0133 - this is a screw down system.

These same part numbers on the two SP cases are used on the modern replacement cases, the 1660324 cases.

Now Omega doesn't give any sizes on these parts, but I do have stock of many case tubes.

I have 2 of the above in stock, so here are the diameters:

090ST9002 - 2 mm where it goes into the case, 2.5 mm for the crown.

090ST0133 - 2.2 mm where it goes into the case, 3.2 for the crown.

Since you have the 090ST1306 we have all that we need for this puzzle. If the 090ST1306 does not fit, then the only conclusion that makes sense is that this is a 166024 case, not 165024, so you need the 069ST42028 crown and 090ST9002 case tube.