Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5003990-02 found under Stud Turnlock Fastener by Thales Training And Simulation Ltd. The National Stock Number assigned to this part is 5325009946453, 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 5003990-02.