Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MX40F-ST found under by Allied Telesyn International. The National Stock Number assigned to this part is 6030014426865, and the Federal Supply Class is 6030 Fiber Optic Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MX40F-ST.