1950s Chrome door lock knobs don't fit

[MickeyCaddy]

Well, this is disappointing. For my 1955 series 62 sedan, I ordered four (4) chrome door lock knobs from Caddy Daddy, guaranteed to fit "1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 Cadillacs".

The knobs arrived today, and the diameter of the threaded hole on the bottom is twice what it should be. The knobs simply slide on and off, and flop around on the threaded lock rods.

Has anyone had this experience? Can't imagine how this could occur.

Michael Chanslor

[Clewisiii]

On the left are the metal chrome lock knobs from my 1961.

On the right is a set of chromed plastic lock knobs that was supposed to be a correct aftermarket replacement. They are nothing alike.


Here you can see how far the correct knob should thread to the rod.


Even if the aftermarket would thread on, it would have to go on a long way due to it's increased height.


The threaded shaft is a 10-24

[MickeyCaddy]

Clewisiii, thank you so much. This is valuable information that I couldn't find anywhere else. The pictures helped a ton, and now I understand what I'm dealing with.