Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number X40-301-528 found under Synchro Control Tra by Bae Systems Bofors Ab. The National Stock Number assigned to this part is 5990009174215, 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 X40-301-528.