# United States tariff lines under HS 7307.21

> The United States tariff splits HS 7307.21 (other, of stainless steel: Flanges) into 2 national lines: 7307.21.10.00 (not machined, not tooled and not otherwise processed after forging) and 7307.21.50.00 (other). The general (MFN) duty differs by line: 3.3% on 7307.21.10.00 and 5.6% on 7307.21.50.00.

Source: https://border.bot/countries/united-states/hs-codes/730721
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) / [7307.21](https://border.bot/countries/united-states/hs-codes/730721)

## Key facts

- HS subheading: [7307.21](https://border.bot/hs-codes/730721)
- National lines: 2
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 73: Articles of iron or steel

## United States lines under 7307.21

The United States tariff splits HS 7307.21 (other, of stainless steel: Flanges) into 2 national lines: 7307.21.10.00 (not machined, not tooled and not otherwise processed after forging) and 7307.21.50.00 (other).

The general (MFN) duty differs by line: 3.3% on 7307.21.10.00 and 5.6% on 7307.21.50.00.

- [7307.21.10.00](https://border.bot/countries/united-states/hs-codes/7307211000) Other, of stainless steel, Flanges, Not machined, not tooled and not otherwise processed after forging. Duty (MFN): 3.3%
- [7307.21.50.00](https://border.bot/countries/united-states/hs-codes/7307215000) Other, of stainless steel, Flanges, Other. Duty (MFN): 5.6%

## In other countries

No other national tariff on border.bot has live lines under 7307.21 yet.

- [The Harmonized System text for 7307.21](https://border.bot/hs-codes/730721)

- Previous subheading: [7307.19](https://border.bot/countries/united-states/hs-codes/730719) Other
- Next subheading: [7307.22](https://border.bot/countries/united-states/hs-codes/730722) Threaded elbows, bends and sleeves

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 7307.21?

The United States tariff splits HS 7307.21 (other, of stainless steel: Flanges) into 2 national lines: 7307.21.10.00 (not machined, not tooled and not otherwise processed after forging) and 7307.21.50.00 (other).

### What is the duty on HS 7307.21 in the United States?

The general (MFN) duty differs by line: 3.3% on 7307.21.10.00 and 5.6% on 7307.21.50.00.

## 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/730721.json