[TR] SAE verses UNC

[Mark J Bradakis]

> Is a 1/4 inch X 1 1/2" UNC bolt the same as a 1/4 inch X 1 1/2" SAE fine
> thread?B B  Looks like it is the same by my searches on the web.
>   
The C in UNC stands for coarse - 20 threads per inch, as opposed to fine
which has 28 tpi.

mjb.