The fitting cut its own threads as it was screwed on.
Really?
Where conduit is threaded in the field, a standard cutting die with a 1 in 16 taper (3/4-in. taper per foot) shall be used.
I have never heard of a fitting that self threads a fine thread - that is not to say it never existed.
Contact CH and see what they have to say.
http://www.crouse-hinds.com/contact.cfm
