Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 78E4N220-1 found under Switch Push by Navy United States Department Of. The National Stock Number assigned to this part is 5930012358810, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 78E4N220-1.