34930 - Steel springs, except wire (Miscellaneous)
34931 - Hot formed springs
3493105 - - Hot formed, Helical springs, Hot wound: Automobile coil springs: Replacement
3493106 - - Hot formed, Helical springs, Hot wound: Automobile coil springs: Original equipment
3493116 - - Hot formed, Helical springs, Hot wound: Locomotive & Railroad car & other Helical springs, Hot wound
3493155 - - Hot formed leaf springs: Automotive (Auto, Truck, Bus, Trailer, etc.): Replacement
3493156 - - Hot formed leaf springs: Original equipment: Auto
3493157 - - Hot formed steel automotive (Auto, Truck, Bus, Trailer, etc.) leaf springs for Shipment to motor vehicle manufacturers or their suppliers for use in original equipment
3493158 - - Hot formed leaf springs: Original equipment: Truck, Bus, Trailer, etc.
3493163 - - Hot formed leaf springs: Original equipment: Leaf springs for Tractors, Farm equipment, Locomotive & Railroad cars & other Heavy equipment
3493198 - - Hot formed steel springs (General) + Torsion bar springs
3493199 - - Hot formed springs (Miscellaneous)
34932 - Cold formed flat springs made of Sheet & Strip
3493210 - - Cold formed flat steel springs made of Sheet or Strip
3493220 - - Cold formed helical steel suspension springs
3493299 - - Cold formed springs (Miscellaneous)
3493XX0 - - Steel springs, except wire (Miscellaneous - Volume)
3493XX2 - - Steel springs, except wire (Miscellaneous - Speciality)