Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NAS1503-8 found under Screw Close Tolerance by Herndon Products Inc. The National Stock Number assigned to this part is 5305008019988, 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 NAS1503-8.