# United States tariff line 7320.90.10.00: Hairsprings

> In the United States tariff, line 7320.90.10.00 covers hairsprings. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 7320.90 in heading 73.20 (chapter 73).

Source: https://border.bot/countries/united-states/hs-codes/7320901000
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) / [7320.90.10.00](https://border.bot/countries/united-states/hs-codes/7320901000)

## Key facts

- Tariff line: 7320.90.10.00
- Covers: Hairsprings
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [7320.90](https://border.bot/hs-codes/732090)

## What this line covers

In the United States tariff, line 7320.90.10.00 covers hairsprings.

Its legal text is “Hairsprings”, read under “Other”.

## How it is structured

It falls under HS subheading 7320.90 in heading 73.20 (chapter 73). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.

- Chapter 73: Articles of iron or steel
- Heading 73.20: Springs and leaves for springs, of iron or steel
- Subheading 7320.90: Other
- Line 7320.90.10.00: Hairsprings

## Duty

Goods under this line enter free of general (MFN) duty.

## 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)

## Other lines under 7320.90

- [7320.90.50.10](https://border.bot/countries/united-states/hs-codes/7320905010) Suitable for use in mattress supports and mattresses of heading 9404
- [7320.90.50.20](https://border.bot/countries/united-states/hs-codes/7320905020) Other
- [7320.90.50.60](https://border.bot/countries/united-states/hs-codes/7320905060) Other

- Previous line: [7320.20.50.60](https://border.bot/countries/united-states/hs-codes/7320205060) Other
- Next line: [7320.90.50.10](https://border.bot/countries/united-states/hs-codes/7320905010) Suitable for use in mattress supports and mattresses of heading 9404

## Frequently asked questions

### What does tariff line 7320.90.10.00 cover in the United States tariff?

In the United States tariff, line 7320.90.10.00 covers hairsprings.

### What is the general (MFN) duty on 7320.90.10.00 in the United States?

Goods under this line enter free of general (MFN) duty.

## 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/7320901000.json