The threads in these tend to be fairly standard, so it's possible they are not Omega at all, or are from a completely different watch in the Omega line.

 

Interesting, my watch repair shop said they did multiple kinds of pushers for there era.

 

The pushers are probably original Omega pushers, but they probably don't belong to that speedmaster reference...

 

Do you think it might be possible to cut a new thread into the press fit pusher? I believe the diameter of the press fit pusher where it fits into the case is 2.5mm.

 

Still looking but no luck yet

Was speaking with Omega CH to see if they can help

Will let u know

 

Most press fitted pushers don't come apart well - they aren't really designed to be disassembled, at least many of them aren't. They are intended to be pushed straight into the case without disassembly, and then when changed pushed straight back out again. This may present a problem with work holding while trying to thread the OD. And of course you would have to confirm that the diameter of the pusher provides enough material to cut threads and not be too small, so the OD of the press in pusher has to be at least the same as the thread major diameter...

 

Here is the comparison between service and original spec, push fit pushers for the 105.012


Clearly seen (arrows) is the thin neck of the service and the fat neck of the original. As this is easily seen when mounted, the originals are valued quite highly and almost impossible to obtain.

 

Not to mention highly difficult if not outright impossible to re-fit once the service pushers have been installed...

 

The part that actually goes into the case is the same, so fitting one or the other will be no different.

 

Not in my experience, I have removed service pushers and refited original style pushers with no issues.

 

Hmm... I've had respectable watchmakers tell me they couldn't re-fit the original pushers that were sold to me with a serviced 105.012 I bought some time back. (I have no reason to doubt the seller either) Is it possible that the pushers, once removed from a 105.012 (i.e. not new old stock) are somehow damaged beyond reusability?

 

What was the reason they gave you regarding why the pushers could not be fitted?

I can't say why you were told what you were told, but, but IMO if pushers are removed in the normal way (pressing out from inside) damage is certainly not common in my experience. Here is a video of me removing a press fitted pusher from a vintage Speedy:

Although the pusher pops out with some force, nothing is damaged in the process and the pusher could be used again as long as water resistance is not a concern. Now if someone takes pliers to them to remove them, that's clearly a different situation, but they can be removed without damaged, and can be used again if in good shape.

If you look at Spacefruit's photo above, his double ended arrow points to the two differing diameters, but it's the diameter above that on each pusher that fits into the case, and they are the same.

Cheers, Al

 

Simply that they wouldn't fit, but it may have been that something happened during removal.

 

Too big? Too small? Any other information?

 

Sorry - it was a while ago, but I think it was that they were too small. Are 145.012 pushers larger in diameter? Looking at some older photos I think one of the pushers was a taller model.

 

Threaded...

 

<- duh. I now think that may have happened to my watch with the first watchmaker.