Product classification
HS code for Helical springs: 7320.20
Iron or steel, helical springs and leaves for springs.
Classification of helical springs under HS 7320.20
Helical springs are classified under HS code 7320.20, which covers springs and leaves for springs made of iron or steel. The classification is determined by the shape and mechanical function of the spring. Helical springs, often referred to as coil springs, are formed by winding wire around a cylinder or cone. These are distinct from leaf springs, which consist of flat plates. The Harmonized System separates springs based on their construction type rather than their end-use application. Whether the spring is used in an industrial machine, a consumer product, or a vehicle, it remains under 7320.20 as long as it is a helical spring made of iron or steel. This code is vital for tracking the trade of mechanical components used across various engineering sectors. The classification applies to both tension and compression springs, provided they follow the helical winding pattern. Material composition is also key; if the spring is made of copper or plastics, it would be classified in their respective chapters (e.g., Chapter 74 or 39).
- Covers
- Steel compression coil springs
- Iron extension helical springs
- Torsion springs with a helical coil
- Automotive suspension coil springs (iron or steel)
- Industrial die springs (helical type)
- Also under 7320.20
- Eibach Pro-Kit springs
- H&R Sport Springs
- Lesjöfors springs
- Mubea springs
- NHK springs
Codes often confused with 7320.20
Common mistake. Helical springs are often misclassified under 7320.10, which is specifically for leaf springs and leaves therefor. Another common error is using 7320.90, which is a residual category for "other" springs like disc springs or spiral springs (clock springs). Additionally, if a spring is imported as part of a specific assembly (like a complete shock absorber), it might be classified under the assembly's code (e.g., 8708.80 for suspension systems) depending on the General Rules of Interpretation regarding parts.
Top exporters and importers of HS 732020 (the code used for helical springs), 2025
In 2025, the largest exporter of HS 732020 (the code used for helical springs) in UN Comtrade data was China, with 30% of world exports; the largest importer in UN Comtrade data was Mexico, with 13% 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 732020, not only helical springs.
Top exporters 2025 · share of world exports
- 1 China $1.5B 30% of world exports
- 2 Germany $936M 18% of world exports
- 3 United States $518M 10% of world exports
World total: $5.1B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Mexico $547M 13% of world imports
- 2 Germany $414M 10.0% of world imports
- 3 United States $412M 9.9% of world imports
World total: $4.1B 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 codes for helical springs
Brazil splits HS 7320.20 into 2 NCM codes. Pick the one that matches your product:
- 7320.20.10Cylindrical helical springs of iron or steel
- 7320.20.90Other helical springs of iron or steel
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about helical springs
What is the HS code for Helical springs?
The HS code for Helical springs is 732020 (Iron or steel; helical springs and leaves for springs).
How do I classify Helical springs for customs?
Helical springs is classified under HS code 732020 — Iron or steel; helical springs and leaves for springs. This is a 6-digit subheading level code.
What is the HS code for steel coil springs?
Steel coil springs, technically known as helical springs, are classified under HS code 7320.20.
Does this code include springs for watches?
No, very small springs used in watches or clocks are typically classified in Chapter 91, which covers horological instruments and their parts.
Which countries are the top exporters of helical springs (HS 732020)?
In 2025, the top exporters of HS 732020 (the code used for helical springs) in UN Comtrade data were China ($1.5B, 30% of world exports), Germany ($936M) and the United States ($518M). World exports came to about $5.1B, 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 helical springs (HS 732020)?
In 2025, the top importers of HS 732020 (the code used for helical springs) in UN Comtrade data were Mexico ($547M, 13% of world imports), Germany ($414M) and the United States ($412M). World imports came to about $4.1B, 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 Helical springs the same in all countries?
The base HS code 732020 for Helical 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 helical springs in Brazil?
Brazil splits HS 732020 into 2 NCM codes, so the right one for helical springs depends on the product's details: 7320.20.10 (Cylindrical helical springs of iron or steel), 7320.20.90 (Other helical springs of iron or steel).