Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 73D4-108 found under Arrester Electrical by Ellis And Watts International Llc. The National Stock Number assigned to this part is 5920014177303, 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 73D4-108.