Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 232-681PC682-20 found under Plug Heaterwell by Combustion Engineering Inc. The National Stock Number assigned to this part is 4470000526626, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 232-681PC682-20.