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United States tariff, chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof

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Key facts

National lines
1,706
Subheadings
538
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 301 to 400 of 538, page 4 of 6.

84.48 Auxiliary machinery for use with machines of heading 8444, 8445, 8446 or 8447 (for example, dobbies, Jacquards, automatic stop motions and shuttle changing mechanisms); parts and accessories suitable for use solely or principally with the machines of this heading or of heading 8444, 8445, 8446 or 8447 (for example, spindles and spindle flyers, card clothing, combs, extruding nipples, shuttles, healds and heald-frames, hosiery needles)

  • 8448.51Parts and accessories of machines of heading 8447 or of their auxiliary machinery: Sinkers, needles and other articles used in forming stitches4 lines
  • 8448.59Parts and accessories of machines of heading 8447 or of their auxiliary machinery: Other2 lines

84.49 Machinery for the manufacture or finishing of felt or nonwovens in the piece or in shapes, including machinery for making felt hats; blocks for making hats

  • 8449.00Machinery for the manufacture or finishing of felt or nonwovens in the piece or in shapes, including machinery for making felt hats; blocks for making hats2 lines

84.50 Household- or laundry-type washing machines, including machines which both wash and dry; parts thereof

  • 8450.11Machines, each of a dry linen capacity not exceeding 10 kg: Fully-automatic machines3 lines
  • 8450.12Machines, each of a dry linen capacity not exceeding 10 kg: Other machines, with built-in centrifugal drier1 line
  • 8450.19Machines, each of a dry linen capacity not exceeding 10 kg: Other1 line
  • 8450.20Machines, each of a dry linen capacity exceeding 10kg3 lines
  • 8450.90Parts3 lines

84.51 Machinery (other than machines of heading 8450) for washing, cleaning, wringing, drying, ironing, pressing (including fusing presses), bleaching, dyeing, dressing, finishing, coating or impregnating textile yarns, fabrics or made up textile articles and machines for applying the paste to the base fabric or other support used in the manufacture of floor coverings such as linoleum; machines for reeling, unreeling, folding, cutting or pinking textile fabrics; parts thereof

  • 8451.10Dry-cleaning machines1 line
  • 8451.21Drying machines: Each of a dry linen capacity not exceeding 10kg2 lines
  • 8451.29Drying machines: Other2 lines
  • 8451.30Ironing machines and presses (including fusing presses)1 line
  • 8451.40Washing, bleaching or dyeing machines1 line
  • 8451.50Machines for reeling, unreeling, folding, cutting or pinking textile fabrics1 line
  • 8451.80Other machinery1 line
  • 8451.90Parts5 lines

84.52 Sewing machines, other than book-sewing machines of heading 8440; furniture, bases and covers specially designed for sewing machines; sewing machine needles; parts thereof

  • 8452.10Sewing machines of the household type2 lines
  • 8452.21Other sewing machines: Automatic units2 lines
  • 8452.29Other sewing machines: Other2 lines
  • 8452.30Sewing machine needles1 line
  • 8452.90Furniture, bases and covers for sewing machines and parts thereof; other parts of sewing machines3 lines

84.53 Machinery for preparing, tanning or working hides, skins or leather or for making or repairing footwear or other articles of hides, skins or leather, other than sewing machines; parts thereof

  • 8453.10Machinery for preparing, tanning or working hides, skins or leather1 line
  • 8453.20Machinery for making or repairing footwear1 line
  • 8453.80Other machinery1 line
  • 8453.90Parts2 lines

84.54 Converters, ladles, ingot molds and casting machines, of a kind used in metallurgy or in metal foundries, and parts thereof

84.55 Metal-rolling mills and rolls therefor; parts thereof

  • 8455.10Tube mills1 line
  • 8455.21Other rolling mills: Hot or combination hot and cold1 line
  • 8455.22Other rolling mills: Cold1 line
  • 8455.30Rolls for rolling mills9 lines
  • 8455.90Other parts2 lines

84.56 Machine tools for working any material by removal of material, by laser or other light or photon beam, ultrasonic, electro-discharge, electro-chemical, electron-beam, ionic-beam or plasma arc processes; water-jet cutting machines

  • 8456.11Operated by laser or other light or photon beam processes: Operated by laser4 lines
  • 8456.12Operated by laser or other light or photon beam processes: Operated by other light or photon beam processes4 lines
  • 8456.20Operated by ultrasonic processes3 lines
  • 8456.30Operated by electro-discharge processes4 lines
  • 8456.40Operated by plasma arc processes3 lines
  • 8456.50Water-jet cutting machines1 line
  • 8456.90Other2 lines

84.57 Machining centers, unit construction machines (single station) and multistation transfer machines, for working metal

  • 8457.10Machining centres8 lines
  • 8457.20Unit construction machines (single station)2 lines
  • 8457.30Multi-station transfer machines2 lines

84.58 Lathes (including turning centers) for removing metal

  • 8458.11Horizontal lathes: Numerically controlled5 lines
  • 8458.19Horizontal lathes: Other6 lines
  • 8458.91Other lathes: Numerically controlled6 lines
  • 8458.99Other lathes: Other5 lines

84.59 Machine tools (including way-type unit head machines) for drilling, boring, milling, threading or tapping by removing metal, other than lathes (including turning centers) of heading 8458

  • 8459.10Way-type unit head machines1 line
  • 8459.21Other drilling machines: Numerically controlled2 lines
  • 8459.29Other drilling machines: Other6 lines
  • 8459.31Other boring-milling machines: Numerically controlled4 lines
  • 8459.39Other boring-milling machines: Other4 lines
  • 8459.41Other boring machines: Numerically controlled4 lines
  • 8459.49Other boring machines: Other4 lines
  • 8459.51Milling machines, knee-type: Numerically controlled2 lines
  • 8459.59Milling machines, knee-type: Other3 lines
  • 8459.61Other milling machines: Numerically controlled2 lines
  • 8459.69Other milling machines: Other5 lines
  • 8459.70Other threading or tapping machines4 lines

84.60 Machine tools for deburring, sharpening, grinding, honing, lapping, polishing or otherwise finishing metal or cermets by means of grinding stones, abrasives or polishing products, other than gear cutting, gear grinding or gear finishing machines of heading 8461

  • 8460.12Flat-surface grinding machines: Numerically controlled2 lines
  • 8460.19Flat-surface grinding machines: Other3 lines
  • 8460.22Other grinding machines: Centreless grinding machines, numerically controlled2 lines
  • 8460.23Other grinding machines: Other cylindrical grinding machines, numerically controlled4 lines
  • 8460.24Other grinding machines: Other, numerically controlled2 lines
  • 8460.29Other grinding machines: Other4 lines
  • 8460.31Sharpening (tool or cutter grinding) machines: Numerically controlled2 lines
  • 8460.39Sharpening (tool or cutter grinding) machines: Other3 lines
  • 8460.40Honing or lapping machines5 lines
  • 8460.90Other5 lines

84.61 Machine tools for planing, shaping, slotting, broaching, gear cutting, gear grinding or gear finishing, sawing, cutting-off and other machine tools working by removing metal or cermets, not elsewhere specified or included

  • 8461.20Shaping or slotting machines4 lines
  • 8461.30Broaching machines5 lines
  • 8461.40Gear cutting, gear grinding or gear finishing machines9 lines
  • 8461.50Sawing or cutting-off machines5 lines
  • 8461.90Other10 lines

84.62 Machine tools (including presses) for working metal by forging, hammering or die forging (excluding rolling mills); machine tools (including presses, slitting lines and cut-to-length lines) for working metal by bending, folding, straightening, flattening, shearing, punching, notching or nibbling (excluding drawbenches); presses for working metal or metal carbides, not specified above

  • 8462.11Hot forming machines for forging, die forging (including presses) and hot hammers: Closed die forging machines4 lines
  • 8462.19Hot forming machines for forging, die forging (including presses) and hot hammers: Other4 lines
  • 8462.22Bending, folding, straightening or flattening machines (including press brakes) for flat products: Profile forming machines3 lines
  • 8462.23Bending, folding, straightening or flattening machines (including press brakes) for flat products: Numerically controlled press brakes3 lines
  • 8462.24Bending, folding, straightening or flattening machines (including press brakes) for flat products: Numerically controlled panel benders3 lines
  • 8462.25Bending, folding, straightening or flattening machines (including press brakes) for flat products: Numerically controlled roll forming machines3 lines
  • 8462.26Bending, folding, straightening or flattening machines (including press brakes) for flat products: Other numerically controlled bending, folding, straightening or flattening machines3 lines
  • 8462.29Bending, folding, straightening or flattening machines (including press brakes) for flat products: Other5 lines
  • 8462.32Slitting lines, cut-to-length lines and other shearing machines (excluding presses) for flat products, other than combined punching and shearing machines: Slitting lines and cut-to-length lines5 lines
  • 8462.33Slitting lines, cut-to-length lines and other shearing machines (excluding presses) for flat products, other than combined punching and shearing machines: Numerically controlled shearing machines2 lines
  • 8462.39Slitting lines, cut-to-length lines and other shearing machines (excluding presses) for flat products, other than combined punching and shearing machines: Other3 lines
  • 8462.42Punching, notching or nibbling machines (excluding presses) for flat products including combined punching and shearing machines: Numerically controlled2 lines
  • 8462.49Punching, notching or nibbling machines (excluding presses) for flat products including combined punching and shearing machines: Other3 lines
  • 8462.51Machines for working tube, pipe, hollow section and bar (excluding presses): Numerically controlled2 lines
  • 8462.59Machines for working tube, pipe, hollow section and bar (excluding presses): Other3 lines
  • 8462.61Cold metal working presses: Hydraulic presses4 lines
  • 8462.62Cold metal working presses: Mechanical presses4 lines
  • 8462.63Cold metal working presses: Servo-presses5 lines
  • 8462.69Cold metal working presses: Other5 lines
  • 8462.90Other5 lines

84.63 Other machine tools for working metal or cermets, without removing material

  • 8463.10Draw-benches for bars, tubes, profiles, wire or the like3 lines
  • 8463.20Thread rolling machines3 lines
  • 8463.30Machines for working wire3 lines
  • 8463.90Other3 lines

84.64 Machine tools for working stone, ceramics, concrete, asbestos-cement or like mineral materials or for cold working glass

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.

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