Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 425 (115V 60 HZ found under Oven Microwave by Litton Systems Inc. The National Stock Number assigned to this part is 7310010260112, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 425 (115V 60 HZ.