Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 73573-6-10C found under Screw Cap Socket He by Sps Technologies Inc. The National Stock Number assigned to this part is 5305010987214, 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 73573-6-10C.