[Mill] Acme 7/8" Lead Screw

[roverguy]

Hi

My 1940's Parkson No. 1NA mill has a worn ACME cross feed lead screw and nut . The size is 7/8" x 5 TPI and it is a LH thread . Been looking for a new screw in this size with no luck. I can use a metric 22mm x 5 trapezoidal screw but I cannot find these in LH thread either !

Any ideas welcome .......Mike

 

[Charles Spencer]

It looks like these people will sell you one:

http://www.roton.com/mating_components.aspx?family=7160204



Of course shipping may be expensive.

 

[buffdan]

These folks may also sell. They sell 3G class as well.
http://www.keystonethreaded.com/acme-threaded-bars.html