United States tariff, chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof
Last updated
Key facts
- National lines
- 1,706
- Subheadings
- 538
- Tariff
- United States
- Chapter
- 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof
Summary
The United States tariff has 1,706 national lines in HS chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof), under 538 subheadings in 86 headings.
Subheadings with United States lines
The United States tariff has 1,706 national lines in HS chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof), under 538 subheadings in 86 headings.
Subheadings 501 to 538 of 538, page 6 of 6.
84.80 Molding boxes for metal foundry; mold bases; molding patterns; molds for metal (other than ingot molds), metal carbides, glass, mineral materials, rubber or plastics
84.81 Taps, cocks, valves and similar appliances, for pipes, boiler shells, tanks, vats or the like, including pressure-reducing valves and thermostatically controlled valves; parts thereof
84.82 Ball or roller bearings, and parts thereof
- 8482.10Ball bearings17 lines
- 8482.20Tapered roller bearings, including cone and tapered roller assemblies9 lines
- 8482.30Spherical roller bearings2 lines
- 8482.40Needle roller bearings, including cage and needle roller assemblies1 line
- 8482.50Other cylindrical roller bearings, including cage and roller assemblies1 line
- 8482.80Other, including combined ball/roller bearings4 lines
- 8482.91Parts: Balls, needles and rollers8 lines
- 8482.99Parts: Other14 lines
84.83 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
- 8483.10Transmission shafts (including cam shafts and crank shafts) and cranks6 lines
- 8483.20Bearing housings, incorporating ball or roller bearings4 lines
- 8483.30Bearing housings, not incorporating ball or roller bearings; plain shaft bearings10 lines
- 8483.40Gears 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 converters9 lines
- 8483.50Flywheels and pulleys, including pulley blocks4 lines
- 8483.60Clutches and shaft couplings (including universal joints)3 lines
- 8483.90Toothed wheels, chain sprockets and other transmission elements presented separately; parts11 lines
84.84 Gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal; sets or assortments of gaskets and similar joints, dissimilar in composition, put up in pouches, envelopes or similar packings; mechanical seals
84.85 Machines for additive manufacturing
84.86 Machines and apparatus of a kind used solely or principally for the manufacture of semiconductor boules or wafers, semiconductor devices, electronic integrated circuits or flat panel displays; machines and apparatus specified in note 11(C) to this chapter; parts and accessories
- 8486.10Machines and apparatus for the manufacture of boules or wafers1 line
- 8486.20Machines and apparatus for the manufacture of semiconductor devices or of electronic integrated circuits1 line
- 8486.30Machines and apparatus for the manufacture of flat panel displays1 line
- 8486.40Machines and apparatus specified in Note 11 (C) to this Chapter3 lines
- 8486.90Parts and accessories1 line
In other countries
No other national tariff on border.bot has live lines under chapter 84 yet.
Frequently asked questions
How many national tariff lines does the United States tariff have in HS chapter 84?
The United States tariff has 1,706 national lines in HS chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof), under 538 subheadings in 86 headings.
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: