Newbie Question, tacks?

I need to go to the dealer tomorrow and ask for some more of the plastic "tacks" they hold the mud flaps onto the truck... does anyone know how they come? Pack of 5, 10, 20? What exactly are they called and how much should I expect to pay?

Thanks in advance

 

I found this with a search...I need some too.

http://www.trademotion.com/partloca...2090&callout=6&catalogid=2&displayCatalogid=0

 

we used to call them rivets when I worked for Saturn. can buy them individually or in packs usually. auto parts stores have them too. many different sizes available. i can't remember what they cost but they are cheap

 

I got some individually, I think I got 7 and they were about a dollar each. They had them in stock too.

 

Yeah same here, 3 bolts and 2 or 3 of those plastic rivets.

I switched out my grill today and there similar plastic rivets helping hold that on.