Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 890057-1 found under Cable Assembly Radio Frequency B by Raytheon Secure Information Systems. The National Stock Number assigned to this part is 5995014512453, and the Federal Supply Class is 5995 Cable Cord And Wire Assemblies Communication Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 890057-1.