Door handle knobs

[wrndln]

I have several knobs that I hope fit 28/29 CCPU's or 28 open cars. I am pasting a picture of the knobs below. First, there are the three wider knobs on the left (the octagon area at the top is about 5/8" across the flats). The right knob is about 1/8" narrower (about 1/2" across the flats) than the other knobs. All have 12-24 threads. Of the three wider knobs there are two different type tops, one type has a smaller round dome in the center (about 5/16" in diameter) and the the other style has a larger round dome on it (slightly larger than 3/18" in diameter). I have a 29 CCPU and a 28 roadster I need knobs for. Can anyone help me identify the 3 styles of knobs?
Rusty Nelson

[d.j. moordigian]

Rusty,

I know about the different size of the knobs...I just can't remember which one
is for T or A. Didn't spend much time on the tops of the knobs. It's hard to look
at both the tops at the same time on a Roadster, but your Phaeton would be
a problem.

Now,...my 15-20 knobs are at home, but I have 2 handles here at work, they
are 1/4 20".

Dudley

[wrndln]

Dudley,
You are correct, the threads are 1/4 x 20. I just looked at the threads originally and they looked like 12 x 24, but I tried a 1/4 x 20 nut on the handles and it fit perfectly.

My phaeton is a 29, so I don't need to worry about the knobs for the latches as it uses the later outside handle style door latch. If you remember which knobs are correct of model A's, please let me know as no one else as responded.
Rusty Nelson

[d.j. moordigian]

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