Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B6278-4 found under Patch Cord by Technical Components Co Inc. The National Stock Number assigned to this part is 5995004640451, 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 B6278-4.