Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number N 480 20 found under Boot Dust And Moisture Seal by E T A Electrotechnical. The National Stock Number assigned to this part is 5975121649575, and the Federal Supply Class is 5975 Electrical Hardware And Supplies. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like N 480 20.