Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RPK5C2431-2 found under Battery Assembly by Bird Electronic Corporation Div. The National Stock Number assigned to this part is 6140016204581, 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 RPK5C2431-2.