E36 Air COnditioner

I was getting belt maintenance done....I noticed that three of my Air Conditioner retainer bolts are missing. The whold thing flops around right now. It probably adds engine noise while driving. I forego installing the new AC belt till I get these replaced...which will be sooner than later. Does anyone know what size these retaining bolts would be?

Thx.

To find part numbers you need ETK, the program eats up a lot of hard drive, but it is indespensible. No-one talks about it much because most copies are pirated, and are sold on Ebay.
You need a Bentley repair manual if you don't have one.