Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 49 1740 found under Boot Dust And Moist by Eaton Corporation. The National Stock Number assigned to this part is 5930003276972, 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 49 1740.