Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1990012RL found under Battery Nonrecharge by Eagle Picher Technologies Llc. The National Stock Number assigned to this part is 6135016179935, 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 1990012RL.