1964 M20C Spinner Back Plate Bolt Size?

[Prior owner]

I'm far from the hangar and am trying to prepare for a prop balancing session- does anyone know whether the bolts that hold the spinner back plate on are AN3 or AN4? And the length possibly, as well?

 

Any help appreciated. I 've got the factory Hartzell two-blade CS prop, as pictured...

[Prior owner]

Aha- found it!  AN411A

[carusoam]

MS is powerful in unexpected ways...  

Best regards,

-a-

[Guest]

6 hours ago, PilotCoyote said:

Aha- found it!  AN411A

AN4-11A, 1/4” diameter, 1-1/8” long, no hole in the shank.

Clarence