Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GAP4157-REV-J found under Battery Set by Eagle Picher Technologies Llc. The National Stock Number assigned to this part is 6135015320775, 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 GAP4157-REV-J.