Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BB 2001 U found under Battery Storage by Joint Electronics Type Designation. The National Stock Number assigned to this part is 6140015128757, and the Federal Supply Class is 6140 Batteries Rechargeable. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BB 2001 U.