A/C idler pulley tensioning bolt size?

Wondering if anyone knows the size/specs of this bolt. Need a new one. I know I can get it at my hardware store but have no clue on the size as it looks like my old one has rattled out and is gone.

Edit: Forgot to specify ;
2001 prerunner 3.4L

 

Bump.



Here's a diagram. Need this bolt... Anyone?
Really don't wanna drive all the way to the dealer for a dang bolt. Or pay for shipping.

 

M8x1.25 I believe. I'd probably go to the dealership myself.

 

http://www.toyotaonlineparts.com/oe-toyota/900990430683

 

As I said, I don't wanna pay for shipping. Already looked up a bunch of dealers and they all want $11/$12 shipping for one stinking bolt. Lol. I may just have to drive down to the dealer. But it's 37 miles one way. Argh.

 

Oh, missed this. Sweet thx man I'll have to get one and see!