Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PX13-1-3R found under Battery Dry by Beseler Charles Co Inc. The National Stock Number assigned to this part is 6135009379959, 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 PX13-1-3R.