*(Quantity discount for 30+ and 100+) Dzus Fasteners Wide Head,,, .450 Short Dzus Fastener Button, 7/16" Panelfast Slotted Oval Head Quarter Turn Fasteners, Slotted Oval Head Quarter Turn Fasteners By Panelfast Are Available In Various Grip Lengths And Diameters To Accommodate Your Needs., They Are Available In Steel Or 7075 Aluminum Alloy And Available In Either Milled Or Anodized Black Finish., Panelfast Is Proudly Manufactured Right Here In The Usa.,,, Head Type: Slotted, Head Style: Oval, Undercut: No, Quarter Turn Fastener Diameter (In): 7/16 In., Quarter Turn Fastener Grip Length (In): 0.400 In. – 1.000 In., Material: Steel And Aluminum,,,,A Little History On The Dzuz Button / Fastners:,,,,William Dzus Sees A Need For A New Type Of Fastener To Meet The Requirements Of The Aircraft Industry – A Quick-Acting, Self-Locking Device.,,From This Idea He Invents And Develops The Well-Known Dzus Fastener, With Capability To Withstand Vibration And A Tolerance For High Stress And Strain.