These are captive quarter-turn Dzus assemblies, The flat-head 5/16" diameter stud is permanently assembled to a compact mounting plate. The stud is spring-loaded. This self-ejecting prevents losing body panels. It also make it easier to install big body panels.
The plated stud assembly is designed to be riveted to a panel using two 1/8" diameter rivets . the rated strength is 85 lb. in tension and 200 lb. in shear. Overall stud length: 1.1 inch. (working) length: .91 inch. Head diameter 5/8". spring receptacles are sold separately.
Head Type: Slotted
Head Style: Flush
Quarter Turn Fastener Diameter (in): 5/16” in.
Quarter Turn Fastener Grip Length (in): 0.400 in. – 0.650 in.
Material: Steel and Aluminum
Finish: Milled and Anodized Black