Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number U100048-000 found under Relay Solid State by L3 Communications Corp. The National Stock Number assigned to this part is 5945014205350, and the Federal Supply Class is 5945 Relays And Solenoids. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like U100048-000.