Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number H4BL3 found under Cord Assembly Electrical by American Telephone And Telegraph Co. The National Stock Number assigned to this part is 5995005568546, 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 H4BL3.