Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 621 1716 001 found under Screw by Rockwell Collins Inc. The National Stock Number assigned to this part is 5305012539681, 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 621 1716 001.