Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number T-21-3-3-S WC found under Chamber Chilling Metal Treating by Cincinnati Sub Zero Productsinc. The National Stock Number assigned to this part is 3424014888966, 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 T-21-3-3-S WC.