Flush & Winged Self-Ejecting Dzus FastenersFor MS5 Self-Ejecting Springs (1.06 c to c length) Flush Head: Ejector fasteners provide 1/4 turn action, with studs that eject from the receptacle when unlocked. They will not hang up when sliding or when curved panels are removed, and show a visual sign of an unlocked fastener. The stud assembly is mounted directly to the outside panel with 1/8" rivets or screws. Made from steel with bright Silver zinc plating. Wing Head: Wing Head Ejector fasteners provide tool-less 1/4 turn action, with studs that eject from the receptacle when unlocked. They will not hang up when sliding or when curved panels are removed, and show a visual sign of an unlocked fastener. The stud assembly is mounted directly to the outside panel with 1/8" rivets or screws. Made from steel with bright Silver zinc plating. TMI-MSEHF5-40