Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NAS1124E9 found under Screw Machine by C B S Fasteners Inc. The National Stock Number assigned to this part is 5305016482879, 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 NAS1124E9.