Prop ident question

[Buell Powell]

'One of the Taylorcraft club members recently acquired a Hartzell prop
and believes it may be for a Fairchild and is seeking information about it.
Stamped on the front of blades by hub
Hartzell, PIQUA, Ohio
Design 797
SR. NO. 17011

Penciled on the reverse of the hub in the recess where the flange
attaches:
D797-83X84

Dimensions:
83.5" long
hub: 12.25" at rear; 7.75 at front
recess in back of hub: 1/4" deep and 6" diameter
thickness at hub 4-3/8"
bore: 2-5/8"
8 bolt holes-5/16 diameter on a 6.5" diameter pattern
I'm sure he will appreciate if someone has information about what it
may have been designed for
Thanks,
Buell Powell'