Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RM401R found under Batterynonrechargeable by Yosemite Investment Inc. The National Stock Number assigned to this part is 6135006696679, and the Federal Supply Class is 6135 Batteries Nonrechargeable. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like RM401R.