SanYangPai 98 fam blade part

[Mteach]

SanYangPei model 98 Kitchen exhaust fan. I need a new/used fan blade unit for my kitchen exhaust fan. I took it apart to clean The fan blade piece that goes over the motor shaft is held in place with a set screw. The part you screw the set screw thru to the shaft to hold it cracked. Other side is fine. Any idea where I can get a replacement part?

[Dean Hoffman]

No idea that a google part search won't find. Can you drill all the way through the shaft and blade attachment? If so, run a machine screw through both to hold them together.