Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5-1607 found under Battery Nonrechargeable by Bird Electronic Corporation Div. The National Stock Number assigned to this part is 6135009319049, 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 5-1607.