I have a NSK ball screw I got off Ebay. It is great but I am trying to determine the thread of the lock nut on the end that tightens up on the thrust bearing. The bearing ID is 16mm. The lock nut threads are odd. THe OD is .581" and fits my 32 pitch thread gauge nicely. My problem is I cant find a tap to make a nut for it. I dont have thread wires to measure the pitch dia.
I have tried to look up the numbers onthe ball nut to see if NSK might have something listed but no luck. I cant even find the series this ball screw is.
I would appreciate any help in trying to figure out what it is.
Thanks
Scott