Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ROF 137 5373 1 found under Control Alarm by Ericsson Components Inc. The National Stock Number assigned to this part is 6350014590501, 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 ROF 137 5373 1.