Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HB500-13-16H3X found under Screw Machine by Electrorack Products Company. The National Stock Number assigned to this part is 5305016190671, and the Federal Supply Class is 5305 Screws. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HB500-13-16H3X.