Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MMI-4311 found under Circuit Card Assemb by Interstate Electronics Corporation. The National Stock Number assigned to this part is 5998014374554, 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 MMI-4311.