Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NAS18B8 found under Rivet Tubular by Nasco Aircraft Brake Inc. The National Stock Number assigned to this part is 5320008339253, and the Federal Supply Class is 5320 Rivets. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NAS18B8.