HTS 8483.40

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

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

As of Revision 22 (2026), effective Oct 30, 2026Source: USITC HTS ↗

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Chapter 99 measures listing products under 8483.40

9903.01.05 Country provisions+10%
Potash that is a product of Mexico, as provided for in U.S. note 2(c) to this subchapter
Mexico6 listed products
9903.03.16 Section 122No change
Articles of civil aircraft (all aircraft other than military aircraft and unmanned aircraft); their engines, parts and components; their other parts, components and subassemblies; and ground flight simulators and their parts and components the product of Canada, as provided for in subdivision (d) of U.S. note 51 to…
Canada6 listed products
9903.05.01 Country provisions+25%
Except for products described in headings 9903.05.02–9903.05.09, articles the product of Brazil, as provided for in subdivision (a) of U.S. note 50 to this subchapter
Brazil6 listed products
9903.05.03 Country provisionsNo additional duty
Articles the product of Brazil, as provided for in subdivision (a)(ii) of U.S. note 50 to this subchapter
Brazil6 listed products
9903.05.04 Country provisionsNo additional duty
Articles the product of Brazil, as provided for in subdivision (a)(iii) of U.S. note 50 to this subchapter
Brazil6 listed products
9903.05.05 Country provisionsNo additional duty
Articles of civil aircraft (all aircraft other than military aircraft); their engines, parts and components; their other parts, components and subassemblies; and ground flight simulators and their parts and components of Brazil, as provided for in subdivision (a)(iv) of U.S. note 50 to this subchapter
Brazil6 listed products
9903.05.06 Country provisionsNo additional duty
Articles the product of Brazil that are articles for use in pharmaceutical applications, as provided for in subdivision (a)(v) of U.S. note 50 to this subchapter
Brazil6 listed products
9903.05.07 Country provisionsNo additional duty
Articles of aluminum, of steel, or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo…
Brazil6 listed products
9903.05.88 Country provisionsNo additional duty
Articles of civil aircraft (all aircraft other than military aircraft); their engines, parts and components; their other parts, components and subassemblies; and ground flight simulators and their parts and components, as provided for in subdivision (d) of U.S. note 52 to this subchapter
6 listed products
9903.82.01 Section 232No change
Articles provided for in subdivision (c) of U.S. note 16 to this subchapter that do not contain any aluminum, steel, or copper
2 listed products
9903.82.03 Section 232No change
Except for articles classifiable in chapters 72, 73, 74 or 76, articles where the weight of the applicable metal is less than 15 percent of the weight of the imported article, as provided for in subdivision (c) of U.S. note 16 to this subchapter
2 listed products
9903.88.01 Section 301+25%
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this…
China4 listed products
9903.88.03 Section 301+25%
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided…
China2 listed products
9903.90.08 Country provisionsSee heading
Articles the product of the Russian Federation, as provided for in U.S. note 30(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 30(b) to this subchapter
Russia3 listed products
9903.96.01 OtherNo additional duty
Effective with respect to entries on or after June 30, 2025, articles of civil aircraft (all aircraft other than military aircraft); their engines, parts, and components; their other parts, components, and subassemblies; and ground flight simulators and their parts and components of the United Kingdom, classified in…
United Kingdom6 listed products
9903.96.02 OtherNo additional duty
Articles of civil aircraft (all aircraft other than military aircraft); their engines, parts, and components; their other parts, components, and subassemblies; and ground flight simulators and their parts and components of Japan, excluding unmanned aircraft, classified in the subheadings enumerated in subdivision (b)…
Japan6 listed products
9903.96.03 OtherNo change
Civil aircraft (all aircraft other than military aircraft and unmanned aircraft) components that are products of Taiwan, provided for in subdivision (c) of U.S. note 35 to this subchapter
Taiwan3 listed products

Lines under 8483.40

HTS	Description	General	Column 2
8483.40.10.00	Torque converters	Free	27.5%
8483.40.30	Imported for use with machines for making cellulosic pulp, paper or paperboard	Free	27.5%
8483.40.30.40	Fixed ratio speed changers
8483.40.30.80	Other
8483.40.50	Other	2.5%	27.5%
8483.40.50.10	Fixed ratio speed changers
8483.40.50.20	Gear boxes and speed changers for wind turbines, as described in statistical note 9 to this chapter
8483.40.50.80	Other
8483.40.70.00	Other speed changers	25¢ each + 3.9%	$4.50 each + 65%
8483.40.80.00	Ball or roller screws	3.8%	45%
8483.40.90.00	Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately	2.5%	27.5%

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

Chapter 99 measures listing products under 8483.40

Lines under 8483.40

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