Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 9053409 found under Adapter Synchro by Abston Machine Shop Inc. The National Stock Number assigned to this part is 5990007750224, 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 9053409.