Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4344-135-18 found under Switch Thermostatic by Sensata Technologies Inc. The National Stock Number assigned to this part is 5930004332032, 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 4344-135-18.