Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NO PRIMARY REF 99-203-8797 found under Pin Spring by This Ncage Is Used To Inform That. The National Stock Number assigned to this part is 5315992038797, and the Federal Supply Class is 5315 Nails Machine Keys And Pins. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NO PRIMARY REF 99-203-8797.