Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number F2N503 found under Wiring Harness Branched by Belkin Components. The National Stock Number assigned to this part is 5995015927947, 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 F2N503.