Product classification
HS code for Industrial springs: 7320.90
Iron or steel, springs n.e.c. in heading no. 7320.
Classification of industrial springs under HS 7320.90
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.
- Covers
- 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
- Also under 7320.90
- Smalley wave springs
- Lee Spring custom springs
- Schnorr disc springs
- Associated Spring custom solutions
Codes often confused with 7320.90
Common mistake. 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.
Top exporters and importers of HS 732090 (the code used for industrial springs), 2025
In 2025, the largest exporter of HS 732090 (the code used for industrial springs) in UN Comtrade data was Germany, with 24% of world exports; the largest importer in UN Comtrade data was the United States, with 9.1% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 732090, not only industrial springs.
Top exporters 2025 · share of world exports
- 1 Germany $480M 24% of world exports
- 2 United States $220M 11% of world exports
- 3 China $204M 10% of world exports
World total: $2.0B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $184M 9.1% of world imports
- 2 Germany $161M 8.0% of world imports
- 3 Poland $106M 5.2% of world imports
World total: $2.0B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for industrial springs
Brazil classifies industrial springs under NCM 7320.90.00: HS 7320.90 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about industrial springs
What is the HS code for Industrial springs?
The HS code for Industrial springs is 732090 (Iron or steel; springs n.e.c. in heading no. 7320). The HS code for industrial iron or steel springs (other than leaf or helical) is 7320.90.
How do I classify Industrial springs for customs?
Industrial springs is classified under HS code 732090 — Iron or steel; springs n.e.c. in heading no. 7320. This is a 6-digit subheading level code.
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.
Which countries are the top exporters of industrial springs (HS 732090)?
In 2025, the top exporters of HS 732090 (the code used for industrial springs) in UN Comtrade data were Germany ($480M, 24% of world exports), the United States ($220M) and China ($204M). World exports came to about $2.0B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of industrial springs (HS 732090)?
In 2025, the top importers of HS 732090 (the code used for industrial springs) in UN Comtrade data were the United States ($184M, 9.1% of world imports), Germany ($161M) and Poland ($106M). World imports came to about $2.0B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Industrial springs the same in all countries?
The base HS code 732090 for Industrial springs is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for industrial springs in Brazil?
In Brazil, industrial springs (HS 732090) is classified under NCM 7320.90.00.