This is a part number A5-40 Stud manufactured by Dzus, it's ready to be part of various aircraft restoration projects!
ABOUT: Dzus Fasteners are made of heat-treated and cadmium plated nickle steel*, and consist of a grommet, spring, and stud, the grommets being composed of aluminum. They are used in covers, plates, cowlings, and similar units, which require quick removal and replacement. When they are broken of otherwise damaged they must be replaced.
Part Number: A5-40
Part Type: Stud
Condition: NOS, Shelf wear due to age
DETAILS: A5-40 Type A Button Head Studs have a 5/16" Body Diameter and a .400" Length. For more information on Dzus Fasteners and sizing visit our BLOG - About Dzus Fasteners.
Images for reference only.