# United States tariff lines under HS 7304.59

> The United States tariff splits HS 7304.59 (other, of circular cross-section, of other alloy steel: Other) into 23 national lines: 7304.59.10.00 (suitable for use in the manufacture of ball or roller bearings), 7304.59.20.30 (of heat-resisting steel), 7304.59.20.40 (having an outside diameter less than 38.1 mm), 7304.59.20.45 (having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm) and 19 others. Every United States line under 7304.59 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/730459
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) / [7304.59](https://border.bot/countries/united-states/hs-codes/730459)

## Key facts

- HS subheading: [7304.59](https://border.bot/hs-codes/730459)
- Duty (MFN): Free
- National lines: 23
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 73: Articles of iron or steel

## United States lines under 7304.59

The United States tariff splits HS 7304.59 (other, of circular cross-section, of other alloy steel: Other) into 23 national lines: 7304.59.10.00 (suitable for use in the manufacture of ball or roller bearings), 7304.59.20.30 (of heat-resisting steel), 7304.59.20.40 (having an outside diameter less than 38.1 mm), 7304.59.20.45 (having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm) and 19 others.

Every United States line under 7304.59 is free of general (MFN) duty.

- [7304.59.10.00](https://border.bot/countries/united-states/hs-codes/7304591000) Other, of circular cross section, of other alloy steel, Other, Suitable for use in the manufacture of ball or roller bearings. Duty (MFN): free
- [7304.59.20.30](https://border.bot/countries/united-states/hs-codes/7304592030) Other, of circular cross section, of other alloy steel, Other, Other, Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, Of heat-resisting steel. Duty (MFN): free
- [7304.59.20.40](https://border.bot/countries/united-states/hs-codes/7304592040) Other, of circular cross section, of other alloy steel, Other, Other, Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, Other, Having an outside diameter less than 38.1 mm. Duty (MFN): free
- [7304.59.20.45](https://border.bot/countries/united-states/hs-codes/7304592045) Other, of circular cross section, of other alloy steel, Other, Other, Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, Other, Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm. Duty (MFN): free
- [7304.59.20.55](https://border.bot/countries/united-states/hs-codes/7304592055) Other, of circular cross section, of other alloy steel, Other, Other, Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, Other, Having an outside diameter exceeding 114.3 mm but less than 190.5 mm. Duty (MFN): free
- [7304.59.20.60](https://border.bot/countries/united-states/hs-codes/7304592060) Other, of circular cross section, of other alloy steel, Other, Other, Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, Other, Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm. Duty (MFN): free
- [7304.59.20.70](https://border.bot/countries/united-states/hs-codes/7304592070) Other, of circular cross section, of other alloy steel, Other, Other, Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, Other, Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm. Duty (MFN): free
- [7304.59.20.80](https://border.bot/countries/united-states/hs-codes/7304592080) Other, of circular cross section, of other alloy steel, Other, Other, Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, Other, Having an outside diameter exceeding 406.4 mm. Duty (MFN): free
- [7304.59.60.00](https://border.bot/countries/united-states/hs-codes/7304596000) Other, of circular cross section, of other alloy steel, Other, Other, Other, Of heat-resisting steel. Duty (MFN): free
- [7304.59.80.10](https://border.bot/countries/united-states/hs-codes/7304598010) Other, of circular cross section, of other alloy steel, Other, Other, Other, Other, Having an outside diameter less than 38.1 mm. Duty (MFN): free
- [7304.59.80.15](https://border.bot/countries/united-states/hs-codes/7304598015) Other, of circular cross section, of other alloy steel, Other, Other, Other, Other, Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm, Having a wall thickness less than 6.4 mm. Duty (MFN): free
- [7304.59.80.20](https://border.bot/countries/united-states/hs-codes/7304598020) Other, of circular cross section, of other alloy steel, Other, Other, Other, Other, Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm, Having a wall thickness of 6.4 mm or more but not exceeding 12.7 mm. Duty (MFN): free
- [7304.59.80.25](https://border.bot/countries/united-states/hs-codes/7304598025) Other, of circular cross section, of other alloy steel, Other, Other, Other, Other, Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm, Having a wall thickness exceeding 12.7 mm. Duty (MFN): free
- [7304.59.80.30](https://border.bot/countries/united-states/hs-codes/7304598030) Other, of circular cross section, of other alloy steel, Other, Other, Other, Other, Having an outside diameter exceeding 114.3 mm but less than 190.5 mm, Having a wall thickness less than 12.7 mm. Duty (MFN): free
- [7304.59.80.35](https://border.bot/countries/united-states/hs-codes/7304598035) Other, of circular cross section, of other alloy steel, Other, Other, Other, Other, Having an outside diameter exceeding 114.3 mm but less than 190.5 mm, Having a wall thickness of 12.7 mm or more but less than 19 mm. Duty (MFN): free
- [7304.59.80.40](https://border.bot/countries/united-states/hs-codes/7304598040) Other, of circular cross section, of other alloy steel, Other, Other, Other, Other, Having an outside diameter exceeding 114.3 mm but less than 190.5 mm, Having a wall thickness of 19 mm or more. Duty (MFN): free
- [7304.59.80.45](https://border.bot/countries/united-states/hs-codes/7304598045) Other, of circular cross section, of other alloy steel, Other, Other, Other, Other, Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm, Having a wall thickness less than 12.7 mm. Duty (MFN): free
- [7304.59.80.50](https://border.bot/countries/united-states/hs-codes/7304598050) Other, of circular cross section, of other alloy steel, Other, Other, Other, Other, Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm, Having a wall thickness of 12.7 mm or more but less than 19 mm. Duty (MFN): free
- [7304.59.80.55](https://border.bot/countries/united-states/hs-codes/7304598055) Other, of circular cross section, of other alloy steel, Other, Other, Other, Other, Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm, Having a wall thickness of 19 mm or more. Duty (MFN): free
- [7304.59.80.60](https://border.bot/countries/united-states/hs-codes/7304598060) Other, of circular cross section, of other alloy steel, Other, Other, Other, Other, Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm, Having a wall thickness less than 12.7 mm. Duty (MFN): free
- [7304.59.80.65](https://border.bot/countries/united-states/hs-codes/7304598065) Other, of circular cross section, of other alloy steel, Other, Other, Other, Other, Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm, Having a wall thickness of 12.7 mm or more but less than 19 mm. Duty (MFN): free
- [7304.59.80.70](https://border.bot/countries/united-states/hs-codes/7304598070) Other, of circular cross section, of other alloy steel, Other, Other, Other, Other, Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm, Having a wall thickness of 19 mm or more. Duty (MFN): free
- [7304.59.80.80](https://border.bot/countries/united-states/hs-codes/7304598080) Other, of circular cross section, of other alloy steel, Other, Other, Other, Other, Having an outside diameter exceeding 406.4 mm. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 7304.59 yet.

- [The Harmonized System text for 7304.59](https://border.bot/hs-codes/730459)

- Previous subheading: [7304.51](https://border.bot/countries/united-states/hs-codes/730451) Cold-drawn or cold-rolled (cold-reduced)
- Next subheading: [7304.90](https://border.bot/countries/united-states/hs-codes/730490) Other

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 7304.59?

The United States tariff splits HS 7304.59 (other, of circular cross-section, of other alloy steel: Other) into 23 national lines: 7304.59.10.00 (suitable for use in the manufacture of ball or roller bearings), 7304.59.20.30 (of heat-resisting steel), 7304.59.20.40 (having an outside diameter less than 38.1 mm), 7304.59.20.45 (having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm) and 19 others.

### What is the duty on HS 7304.59 in the United States?

Every United States line under 7304.59 is 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/730459.json