Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W B 101 12 AA found under Battery Nonrechargeable by Federal Specifications. The National Stock Number assigned to this part is 6135009857845, 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 W B 101 12 AA.