Manufacturer Part#: FC0380-S-42, Manufacturer: Fascomp Electronic Hardware, Brand: FEH Captive Screws, ECCN: EAR99, HTS Codes: 7318.16.0000, Material: Steel, Thread Size: #4-40, Head Diameter: 5/16 Inch, Head Height: 5/16 Inch, Thread Length: 1/8 Inch, Head Type: Type 2, Length Under Head: 1/2 Inch