RE: Hurricane Impellor Adapter Nut Needed!!!
Gents,
The nut looks like the attached picture. It is .950" long with a .250" nut part. The nut part is 0.500" flat face to face. Shaft is 0.4". The bolt is a 1 inch bolt. It is threaded the same as the OS 91. I believe it is 1/4" by 24.
I like to thank a buddy for taking the pic and measurements of his fan adapter.
DW_Crash