# United States tariff lines under HS 4009.21

> The United States tariff splits HS 4009.21 (reinforced or otherwise combined only with metal: Without fittings) into 1 national line: 4009.21.00.00 (without fittings). The general (MFN) duty is 2.5% on this line.

Source: https://border.bot/countries/united-states/hs-codes/400921
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 40](https://border.bot/countries/united-states/hs-codes/40) / [4009.21](https://border.bot/countries/united-states/hs-codes/400921)

## Key facts

- HS subheading: [4009.21](https://border.bot/hs-codes/400921)
- Duty (MFN): 2.5%
- National lines: 1
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 40: Rubber and articles thereof

## United States lines under 4009.21

The United States tariff splits HS 4009.21 (reinforced or otherwise combined only with metal: Without fittings) into 1 national line: 4009.21.00.00 (without fittings).

The general (MFN) duty is 2.5% on this line.

- [4009.21.00.00](https://border.bot/countries/united-states/hs-codes/4009210000) Reinforced or otherwise combined only with metal, Without fittings. Duty (MFN): 2.5%

## In other countries

No other national tariff on border.bot has live lines under 4009.21 yet.

- [The Harmonized System text for 4009.21](https://border.bot/hs-codes/400921)

- Previous subheading: [4009.12](https://border.bot/countries/united-states/hs-codes/400912) Tubes, pipes and hoses, of vulcanized rubber other than hard rubber, with or without their fittings (for example, joints, elbows, flanges)
- Next subheading: [4009.22](https://border.bot/countries/united-states/hs-codes/400922) Tubes, pipes and hoses, of vulcanized rubber other than hard rubber, with or without their fittings (for example, joints, elbows, flanges)

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 4009.21?

The United States tariff splits HS 4009.21 (reinforced or otherwise combined only with metal: Without fittings) into 1 national line: 4009.21.00.00 (without fittings).

### What is the duty on HS 4009.21 in the United States?

The general (MFN) duty is 2.5% on this line.

## 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/400921.json