All HS sections and chapters 2-digit chapter

84 Machinery and mechanical appliances, boilers, nuclear reactors; parts thereof

The broadest level of the Harmonized System. Pick the heading below that fits your goods, then the six-digit code under it — that last one is what you declare.

Section XVI, Machinery & Electrical — machinery, mechanical appliances, electrical and electronic equipment.

  1. 84 Chapter Machinery and mechanical appliances, boilers, nuclear reactors; parts thereof
  2. —— Heading Pick one of the 86 headings below
  3. —— Subheading Six digits, the level every country shares

Chapter 84 covers machinery and mechanical appliances, boilers, nuclear reactors; parts thereof: industrial machinery, engines, pumps, computers and other non-electrical mechanical equipment. With 86 headings and 538 six-digit codes, it's the largest chapter in the Harmonized System and covers most industrial and computing equipment. Classification tip: Machines are usually classified by function (what the machine does) rather than the industry that uses it, and parts generally follow the classification of the finished machine they belong to: check both rules before assigning a code.

86 headings in chapter 84

Four-digit groups. Pick the one that fits, then the six-digit code inside it.

Other chapters in Section XVI

85 Electrical machinery and equipment and parts thereof; sound recorders and reproducers; television image and sound recorders and reproducers, parts and accessories of such articles

The wording above is the Harmonized System nomenclature as published by the World Customs Organization, HS 2022 edition. It is a classification reference, not a tariff: it carries no duty rates, and it stops at six digits — the importing country adds its own beyond that.

Classification is decided by the General Rules of Interpretation and the section and chapter notes, and it is the importing country’s customs authority that makes it binding.

Shipping goods from chapter 84? A customs hold shows up as a milestone that stops moving — follow the container or the air waybill from departure to delivery.

Track a shipment

Chapter 84 FAQ

Chapter 84 covers machinery and mechanical appliances, boilers, nuclear reactors; parts thereof: industrial machinery, engines, pumps, computers and other non-electrical mechanical equipment. With 86 headings and 538 six-digit codes, it's the largest chapter in the Harmonized System and covers most industrial and computing equipment. Classification tip: Machines are usually classified by function (what the machine does) rather than the industry that uses it, and parts generally follow the classification of the finished machine they belong to: check both rules before assigning a code.

Pick the heading below that describes the goods, then the six-digit subheading under it. Six digits is the level the Harmonized System defines and the level customs everywhere recognises; anything beyond that is added by the importing country.

The General Rules of Interpretation, read together with the notes to Section XVI and to chapter 84. A description that reads right is not enough on its own — the notes routinely pull goods out of the chapter they obviously belong to and put them somewhere else. Where duty or licensing turns on the answer, ask the importing country’s customs authority for a binding ruling.

A wrong or missing code is one of the common reasons customs holds a container, and a hold shows up as a milestone that stops moving. Watch for it in the container tracking app, on the air waybill in the air cargo tracker, or through the tracking API.

© 2026 Tracking One. All rights reserved.