Power Steering Pulley Bolt Size?!?

[Tman64]

I can't seem to find the bolt that holds the power steering pump pulley on. Anyone know the exact size? Looks like theres got to be a washer also

 

[a91what]

What year? Most power steering pump pulleys are press fit

 

[Tman64]

What year? Most power steering pump pulleys are press fit

upon further research lol, I guess the threads on the pump are for the pulley install tool