Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 373-1031-001 found under by Telephonics Corporation. The National Stock Number assigned to this part is 5840015010071, and the Federal Supply Class is 5840 Radar Equipment Except Airborne. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 373-1031-001.