Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5990-99-9727610 found under Synchro Special by Nato Stock Number Assigned By An. The National Stock Number assigned to this part is 5990000080786, and the Federal Supply Class is 5990 Synchros And Resolvers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5990-99-9727610.