Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B-9-5930 found under Expansion Joint by Pathway Bellows Inc. The National Stock Number assigned to this part is 4320011698109, and the Federal Supply Class is 4320 Power And Hand Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B-9-5930.