Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 503669-03 found under Cable Assembly Special Purpose Electrical by Ramtek Corp. The National Stock Number assigned to this part is 5995011322802, 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 503669-03.