Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HS-6-TPMP-21 found under Sealing Iron Electric by Valad Electric Heating Corp. The National Stock Number assigned to this part is 3540008492649, 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 HS-6-TPMP-21.