Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M2002-507 found under Switch Thermostatic by Calculagraph Co Inc. The National Stock Number assigned to this part is 5930012784845, 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 M2002-507.