Key facts
- HS subheading
- 8483.40
- National lines
- 9
- Tariff
- United States
- Chapter
- 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof
Summary
The United States tariff splits HS 8483.40 (gears and gearing, other than toothed wheels, chain sprockets and other transmission elements presented separately; ball or roller screws; gear boxes and other speed changers, including torque converters) into 9 national lines: 8483.40.10.00 (torque converters), 8483.40.30.40 (fixed ratio speed changers), 8483.40.30.80 (other), 8483.40.50.10 (fixed ratio speed changers) and 5 others.
United States lines under 8483.40
The United States tariff splits HS 8483.40 (gears and gearing, other than toothed wheels, chain sprockets and other transmission elements presented separately; ball or roller screws; gear boxes and other speed changers, including torque converters) into 9 national lines: 8483.40.10.00 (torque converters), 8483.40.30.40 (fixed ratio speed changers), 8483.40.30.80 (other), 8483.40.50.10 (fixed ratio speed changers) and 5 others.
- 8483.40.10.00Torque convertersDuty: Free
- 8483.40.30.40Fixed ratio speed changersDuty: Free
- 8483.40.30.80OtherDuty: Free
- 8483.40.50.10Fixed ratio speed changersDuty: 2.5%
- 8483.40.50.20Gear boxes and speed changers for wind turbines, as described in statistical note 9 to this chapterDuty: 2.5%
- 8483.40.50.80OtherDuty: 2.5%
- 8483.40.70.00Other speed changersDuty: 25¢ each + 3.9%
- 8483.40.80.00Ball or roller screwsDuty: 3.8%
- 8483.40.90.00Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separatelyDuty: 2.5%
In other countries
No other national tariff on border.bot has live lines under 8483.40 yet.
Frequently asked questions
How many national tariff lines does the United States tariff have under HS 8483.40?
The United States tariff splits HS 8483.40 (gears and gearing, other than toothed wheels, chain sprockets and other transmission elements presented separately; ball or roller screws; gear boxes and other speed changers, including torque converters) into 9 national lines: 8483.40.10.00 (torque converters), 8483.40.30.40 (fixed ratio speed changers), 8483.40.30.80 (other), 8483.40.50.10 (fixed ratio speed changers) and 5 others.
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: