Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 7218-3 found under Regulator Furnace by Rockwell W S Co. The National Stock Number assigned to this part is 3424010683177, and the Federal Supply Class is 3424 Metal Heat Treating And Non-Thermal Treating Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 7218-3.