Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NSA55137-109 found under Stud Assembly Turnlock Fastener by Airbus Industries. The National Stock Number assigned to this part is 5325001715789, and the Federal Supply Class is 5325 Fastening Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NSA55137-109.