Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 54 006520 03 found under Circuit Card Assembly by Interlink Communications Inc. The National Stock Number assigned to this part is 5998012982583, and the Federal Supply Class is 5998 Electrical And Electronic Assemblies Boards Cards And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 54 006520 03.