Atlas 618

[wa5cab]

Addenda: the four corners are on the ID of the Acme threads. Not on the outside of the two halves. Unfortunately the note does not give a width of the resulting 45 deg. flat that should result from the filing. So I would go for a nominal 1/16" X 45 deg. typ. 4 pl.

 

[bama7]

Bought a new set of half nuts from Clausing for $36.16 shipped. They surprised me again.