Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 27 82520 001 found under Relay Battery by Swearingen Aviation Corp. The National Stock Number assigned to this part is 6135010071133, 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 27 82520 001.