Dzus Fasteners for Cowling Doors

[bluehaze]

Anyone know the model number for the Dzus fastener for the cowling doors? My parts book shows a cowling with the "studs" and an oil level check access door. However, my 7 gcaa has a left and right full cowling door. I had a dzus fastener come out at some point in flight and I don't know which one to purchase.

 

[Desert7GCBC]

As they're fairly cheap, I just bought an assortment of the lengths that more-or-less cover what might be needed. The idea is to install whatever size that gives a nice snug fit. That seems to mostly eliminate having them falling out in flight.