HS Code for Industrial springs

Industrial springs made of iron or steel are classified under HS code 7320.90 when they do not fall into the more specific categories of leaf-springs or helical springs. Heading 7320 covers all types of iron or steel springs, and the subheadings are organized by the mechanical design of the spring. Subheading 7320.90 serves as the residual category for advanced or specialized spring types, such as disc springs (Belleville washers) or torsion springs that are not helical. The classification is based on the material (ferrous metal) and the mechanical function of storing energy through elasticity.

Products Included

• Disc springs and Belleville washers
• Flat springs for industrial machinery
• Spiral springs (excluding clock/watch springs)
• Torsion bar springs
• Constant force springs
• Wave springs used in industrial valves

Common Misclassification

The most frequent error is classifying all industrial springs under HS code 7320.20, which is exclusively for helical springs (coil springs). If the spring is flat or disc-shaped, it must be moved to 7320.90. Another misclassification occurs with HS code 9114.10, which is for clock or watch springs; industrial-scale springs must remain in Chapter 73. Additionally, if a spring is part of a specific assembly and has lost its identity as a general-purpose spring, it might be classified as a part of a machine in Chapter 84 or 85, though General Interpretative Rule 1 usually keeps them in 7320.

FAQ

What is the HS code for Industrial springs?

The HS code for industrial iron or steel springs (other than leaf or helical) is 7320.90.

Are stainless steel springs classified differently?

No, stainless steel is a type of steel, so stainless industrial springs are still classified under heading 7320, following the same logic for helical vs. other types.