If you use Dzus Fasteners , don't buy the aluminum type, buy the steel one unless you are a light weight manic. If you are, lose 5 lbs. If you can't turn the fastener with a quarter with your fingers, the spring wire is too deep or the button is too short. The wrench tool will slip out of the button slot, which will put a deep ugly scratch on your paint job or anodized panel. Button length can be confusing. To attach a single panel, .062'' thickness, I used a .425 tall spring wire with a .550 Grip Flat Button. For two .062 panels going together, use .600 Grip. I used the .650 grip for overlaping painted panels. Go to www.chassisshop.com to shop for Dzus fastener stuff, page 25 on their online catalog. For paint job protection, go to www.fullborerace,com and get some Part Number 231, Teflon Button Washers. Can also be used for spacers if the Dzus buttons are too long, since you brought the wrong grip depth or in areas on you Dragster where you have moving parts and you don't want metal to metal contact. Highly recommended ! If anyone has more input on this subject, lets hear it.