Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TAS8971-06-28 found under Screw Cap Socket He by H K Connecticut Holding Company. The National Stock Number assigned to this part is 5305013536892, 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 TAS8971-06-28.