Thanks for the response Lew. They are Model Locomotive wheels. I think it means the distance between the rails is 5in. The axles are .670 dia.
I was using the term "locktight" generically as I seem to be able to find the permatex brand as sold by NAPA easier than the real Locktight brand. I have some permatex that is for sleeves and bearings and is supposed to be permenant after it has set up. Has anyone got any experience with this?
Ron