Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Y3440305 21 found under Cable Assembly Radio Frequency by Raytheon Company. The National Stock Number assigned to this part is 5995012730191, 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 Y3440305 21.