# United States tariff lines under HS 7320.90

> The United States tariff splits HS 7320.90 (springs and leaves for springs, of iron or steel) into 4 national lines: 7320.90.10.00 (hairsprings), 7320.90.50.10 (suitable for use in mattress supports and mattresses of heading 9404), 7320.90.50.20 (other) and 7320.90.50.60 (other). The general (MFN) duty differs by line: free on 7320.90.10.00, 2.9% on 7320.90.50.10, 2.9% on 7320.90.50.20 and 2.9% on 7320.90.50.60.

Source: https://border.bot/countries/united-states/hs-codes/732090
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 73](https://border.bot/countries/united-states/hs-codes/73) / [7320.90](https://border.bot/countries/united-states/hs-codes/732090)

## Key facts

- HS subheading: [7320.90](https://border.bot/hs-codes/732090)
- National lines: 4
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 73: Articles of iron or steel

## United States lines under 7320.90

The United States tariff splits HS 7320.90 (springs and leaves for springs, of iron or steel) into 4 national lines: 7320.90.10.00 (hairsprings), 7320.90.50.10 (suitable for use in mattress supports and mattresses of heading 9404), 7320.90.50.20 (other) and 7320.90.50.60 (other).

The general (MFN) duty differs by line: free on 7320.90.10.00, 2.9% on 7320.90.50.10, 2.9% on 7320.90.50.20 and 2.9% on 7320.90.50.60.

- [7320.90.10.00](https://border.bot/countries/united-states/hs-codes/7320901000) Other, Hairsprings. Duty (MFN): free
- [7320.90.50.10](https://border.bot/countries/united-states/hs-codes/7320905010) Other, Other, Of wire, Suitable for use in mattress supports and mattresses of heading 9404. Duty (MFN): 2.9%
- [7320.90.50.20](https://border.bot/countries/united-states/hs-codes/7320905020) Other, Other, Of wire, Other. Duty (MFN): 2.9%
- [7320.90.50.60](https://border.bot/countries/united-states/hs-codes/7320905060) Other, Other, Other. Duty (MFN): 2.9%

## In other countries

No other national tariff on border.bot has live lines under 7320.90 yet.

- [The Harmonized System text for 7320.90](https://border.bot/hs-codes/732090)

- Previous subheading: [7320.20](https://border.bot/countries/united-states/hs-codes/732020) Helical springs
- Next subheading: [7321.11](https://border.bot/countries/united-states/hs-codes/732111) For gas fuel or for both gas and other fuels

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 7320.90?

The United States tariff splits HS 7320.90 (springs and leaves for springs, of iron or steel) into 4 national lines: 7320.90.10.00 (hairsprings), 7320.90.50.10 (suitable for use in mattress supports and mattresses of heading 9404), 7320.90.50.20 (other) and 7320.90.50.60 (other).

### What is the duty on HS 7320.90 in the United States?

The general (MFN) duty differs by line: free on 7320.90.10.00, 2.9% on 7320.90.50.10, 2.9% on 7320.90.50.20 and 2.9% on 7320.90.50.60.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/732090.json