Sprint Fan Motor Grub Screw Size

[Mazzini]

Anybody know the size and thread of the grub screw that holds the fan onto the shaft of the heater motor? It's for a '72 Sprint.

[pharriso]

small plastic blade motor or larger metal blade motor?

[Mazzini]

Ah apologies, I should have said heater motor. I've corrected my post.

[SENC]

Rob - pulled a spare heater I have and, assuming it is the same, I measured the grub screw at #10-32. It needed a 3/32 hex key to remove. The screw also fit nicely in my m5-0.8 sizer, which makes sense as the 10-32 is just a hair smaller. Posting a couple pictures to confirm we're talking about the same grub screw.

[Mazzini]

Bingo! That's the one! Many thanks Henry