Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TFL142-4AE00 2W found under Switch Thermostatic by Emerson Electric Co. The National Stock Number assigned to this part is 5930013888179, 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 TFL142-4AE00 2W.