Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 91S13-17-1AA found under Stud Assembly Turnlock Fastener by Alcoa Global Fasteners Inc. The National Stock Number assigned to this part is 5325004506054, 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 91S13-17-1AA.