View Full Version : Backplate threads

11-09-2004, 09:50 PM
Hi all, I need a chuck backplate with 2 3/8
X 8 thread. Is this threadsize common or
will I have to make it myself?

(I wanna mount a chuck on a dividing head)


11-09-2004, 10:26 PM
Hummmmm. Are you sure it's 2 3/8"?
I have a 2 1/4 x 8 for sure and another out in the shed of unknown size. I'll have to look in the morning.

What diameter and registration do you need?

11-09-2004, 10:32 PM
Mainly, I want to know if that's a
standard size. I measured the O.D.
of the threads and its 2 3/8 I'm
pretty sure. I'll measure it again...

11-09-2004, 11:26 PM
South Bend used 2-3/8"-6 TPI on their 14-1/2 & 16 " lathes. I might have something in this size that is adaptable.

What OD do you need?