On Oct 31, 9:51*am, rodjava wrote:
Hi,
I would like to replace the threaded nose cap for my 10L SouthBend
lathe spindle.
It has a 2 1/4 - 8 threaded spindle. What size should I bore the
minimun hole for threading internally?

If somebody can reffer me a link where I can find the information
myself, that would be great too.

Thank you all in advance.

Rod

I found the answer to my own question he http://www.newmantools.com/tapdrill.htm#callink
BTW, its 2.128215 for a 75% thread percentage

Rod