Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 836-8520-000 found under Switch Thermostatic by Aqua Chem Inc. The National Stock Number assigned to this part is 5930013643686, 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 836-8520-000.