So there is another moen tap knob that has been posted 2 or 3 times on the site. It seems to fit my bathroom sink tap rather than my shower. This knob is larger (inside diameter of the knob is 29mm) and fits my shower. My shower was installed around 2000 ... and I don't see any knobs like this in the current clutter at the local Home Despot.

One of the features of this knob are the "end stops" that let it turn about 300 degrees. The other knob only turns about 180 degrees by the look of it. My placement of the ends stops was an estimation rather than a measurement, so you might have to adjust the "ring" in your assembly to adjust exactly where the knob turns to-from.

If you're trying to decide if this is the knob for you, here are important details:

• Outside diameter 36mm + roughly 2mm of knurls.
• Inside diameter 29mm
• Turns: rougly 300 degress stop to stop
• inside post bit:
  • 15mm OD
  • 9.5mm ID
  • 7mm between the flat bits that do the turning.

I made this object from scratch in fusion 360. If you really want to play with the files, then ask. That said, it's dead simple. I didn't make it "look" like original part ... I simple made it work like the original part. It is now the knob in my shower.