Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 331Y found under Flashlight by Eveready Battery Co Inc. The National Stock Number assigned to this part is 6230010171220, and the Federal Supply Class is 6230 Electric Portable And Hand Lighting Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 331Y.