I think you'll find part # 102-22123-00-00 is smaller and will not fit AT2.
Have a look on Sumo Rubber website, they have dimensions.
174-22123-00 bushings are available, I've just bought some for my CT1-B

Your initial statement is correct, but maybe not the interpretation.

The set of five digits in your example refers to the type of part, in this case 22123 = Bushing. As a general rule, all swing arm bushings on all models will have this five digit number. The first three digits relate to the model a specific part was first fitted to and, where these three digits are different, parts are not interchangeable.

The first set of two digits relate to any alteration to a part (00 = original part, 01 = first alteration etc) and, if another set of two digits is quoted, then this relates to the colour.

If you have a look at any really early parts list in the Tech Library, then at the start will be a comprehensive breakdown on how to "read" part numbers. Rather frustratingly, I haven't been able to find a list of the codes for the type of material and finish.

Have you ever considered Zedder?
www.zedder.com

It can be very handy on stuff like this.

Alan,

What "finish and material" information are you searching for?  Regarding fasteners?  I have an old list of nut and bolt sizes, strength, and finishes based on part number.  These are the general format 9XXXX-XXXXX-XX part numbers....  I'm pretty sure the finish, material, and type of hardware is coded into the first 5 digits and the size into the second 5. 

As far as finish and material on specific model parts with the XXX-XXXXX-XX-XX format, I'm not sure the info exists.

Mark

Pete-RT1.....  Sumo rubber website a great lead.  Thank you.  Unfortunately they're out of stock right now.  I don't need immediately whereas I don't wait till I get to the assembly point to start getting the parts.  I make sure I have everything required for the rebuild before I begin assembling anything.  I'll reach out to them to see when they'll be expecting them back in stock.
There is a pair for sale on eBay for $44, which IMHO is unreasonable.  Time is on my side.
Thanks again for the lead.
As an aside (and coincidence, my name is also Pete(r) 

GR8uncleal... I appreciate the lesson on the part # breakdown.  Clear as day now.

Rick C... Never even knew of the existence of Zedder.  My involvement in restoring old Yamahas is winding down with this AT2 but I'm going to make a note of them in my "resources file" for future use if needed.  I don't think getting a bushing will be too much of a challenge.

 

Thanks Mark.

What I have never seen is a list that says something like - 01 = chrome, 02 = BZP, 03 = nickel etc.

In theory, if I was certain of a finish on a particular component, then I guess I could look at the original part number for that and tag the relevant section of the part number with that finish - eg if a domed nut was chrome finish and the relevant portion of the part number was 01, then I could record that 01 = chrome finish.

Purely as an observation, I have noticed that some nuts and bolts etc supersede to a part number where only the finish is different (I think that olive finish bolts on some RDs have superseded to black finish) - possibly a tad frustrating to someone who's trying to do a concourse resto. 

I accept that this is a "first world" problem  but, given the level of detail that is shown in the parts manuals, I'm surprised that such a list isn't shown. 

"Pete-RT1.....  Sumo rubber website a great lead.  Thank you.  Unfortunately they're out of stock right now."
Pete I only mentioned Sumo for the dimensions they have on their site.
I have used them and they were good, but I got my bushes from Yambits as I'm in the UK.
Hope you manage to get hold of some.

Alan, I'm pretty sure the info on the fastener finish is contained in the first five of the number, not a suffix...  I've never checked but guessing there is a pattern to the numbering that you might be able to figure out.  The maddening part is they supersede the number and the new bolt will work functionally but has different aesthetics.

I'll try to post some pictures of the lists when I get a chance.

Yes, I agree Mark!  From memory, it's the last two of the first batch of five.