Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B12B found under Lead Electrical by Fluke Electronics Corp. The National Stock Number assigned to this part is 5995008839738, 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 B12B.