Chapter 84, Machinery and mechanical appliances / Heading 8483
HTS 8483.40.50.10: Fixed ratio speed changers
Schedule text: Fixed ratio speed changers. Classification: Transmission shafts (including camshafts and crankshafts) and cranks; bearing housings, housed bearings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints); parts thereof › Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately; ball or roller screws; gear boxes and other speed changers, including torque converters › Gear boxes and other speed changers › Fixed ratio speed changers, multiple and variable ratio speed changers each ratio of which is selected by manual manipulation › Other › Fixed ratio speed changers
General rate of duty
2.5%
Column 1, USITC schedule
From China, all in
52.5%
Priced live by the Gateway engine
Section 301 China
25%
List 3
Forced labor 301
exempt
9903.05.90
How the rate is built
Each line is a separate legal authority. They stack on the $10,000 customs value unless a carve-out says otherwise.
| Program | Rate | Amount |
|---|---|---|
General rate of duty (Column 1) Official rate: 2.5% 8483.40.50.10 | 2.5% | $250.00 |
Section 301 China (List 3) | 25% | $2,500.00 |
Section 232 Steel (Derivative) As of April 6, 2026, CBP may assess Section 232 metals duties based on US sales price rather than declared customs value. | 25% | $2,500.00 |
Effective duty rate | 52.5% | $5,250.00 |
Checked and not applied
- Section 301 forced labor: Exempt: article is already subject to Section 232 duties (9903.05.90, U.S. note 52)
Stack priced from China on a $10,000 customs value, ocean entry. Other origins carry different programs; the calculator prices any of them.
Related lines
Statistical lines under the same 8-digit heading share one legal rate; the last two digits report statistics.
- 8483.40.50Other (rate line, 2.5%)
- 8483.40.50.20Gear boxes and speed changers for wind turbines, as described in statistical note 9 to this chapter
- 8483.40.50.50Other
- 8483.40.50.80Other
Questions about this example
- What is HTS code 8483.40.50.10?
- HTS 8483.40.50.10 covers fixed ratio speed changers; the schedule's own line text is "Fixed ratio speed changers". Its full classification path in the Harmonized Tariff Schedule of the United States is: Transmission shafts (including camshafts and crankshafts) and cranks; bearing housings, housed bearings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints); parts thereof › Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately; ball or roller screws; gear boxes and other speed changers, including torque converters › Gear boxes and other speed changers › Fixed ratio speed changers, multiple and variable ratio speed changers each ratio of which is selected by manual manipulation › Other › Fixed ratio speed changers. It sits in chapter 84 (Machinery and mechanical appliances) under heading 8483.
- What is the general duty rate for HTS 8483.40.50.10?
- The Column 1 general rate of duty is 2.5%. That is the most-favored-nation rate before any Section 301, Section 232, Section 338, Section 201 or antidumping and countervailing action, and before CBP's Merchandise Processing and Harbor Maintenance fees.
- What is the tariff on HTS 8483.40.50.10 from China?
- Priced on $10,000 of goods, the effective duty from China is 52.5%: 2.5% general rate + 25% Section 301 + 25% Section 232 Steel (Derivative). Section 301 applies (List 3). Forced-labor duty: Exempt: article is already subject to Section 232 duties (9903.05.90, U.S. note 52).
- Which lines are related to HTS 8483.40.50.10?
- It is a statistical line under the 8-digit rate line 8483.40.50 (Other), which has 3 other statistical lines. All lines under one 8-digit heading share the same legal duty rate; the tenth digit reports statistics.