Broken bolt holding down fan

[floorit]

Hi Guys, anyone tell me tap size of bolts holding down fan blade assembly. I drilled out snapped off bolt but now need to retap. Existing bolts say "YM 8.8." Thank you! Truck is '65, 2a,88, 2.25 petrol.

[SafeAirOne]

Probably not the way you want your question answered, but the broken bolt has the same thread pitch as the other three that (presumably) aren't broken. Just take one of the others down to your local mom and pop hardware store where you buy your taps and see which hole the bolt threads into on the thread identifier board in the nuts and bolts aisle.

I think you'll find that p/n 255207 is 1/4 UNF x 3/4 bolt, but verify that at the hardware store. The 8.8 suggests that it's the equivalent of about a grade 5 bolt.