Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C-2121 942HLCU-L found under Furnace Heat Treating Electric by Cress Mfg Co. The National Stock Number assigned to this part is 3424014809200, 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 C-2121 942HLCU-L.