Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D6173-13 found under Arrester Lightning by Federal Aviation Administration. The National Stock Number assigned to this part is 5920011372405, and the Federal Supply Class is 5920 Fuses Arresters Absorbers And Protector. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like D6173-13.