Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 177-00-00-019 found under by Hirtenberger Ag. The National Stock Number assigned to this part is 6135012108715, 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 177-00-00-019.