Japan HS Code

HS Code 840310: Boilers in Japan

Q: Is HS code 840310 the same across all countries?

Yes — up to the 6-digit level, HS code 840310 is the same in every WCO member country. Beyond 6 digits, each country extends the code for national tariff and statistical use. Japan extends it under Japan HS / Statistical Code.

Q: What system does Japan use to classify HS code 840310?

Japan classifies products under the Customs Tariff Schedules of Japan (Japan HS / Statistical Code; locally 実行関税率表), which extends HS codes to 9 digits. The first 6 digits align with the WCO Harmonized System, and the rest cover national tariff and statistical needs.

Q: Where can I officially look up HS code 840310 in Japan?

The official source is https://www.customs.go.jp/english/. For faster cross-country lookups, TradeInt's HS Code Tool consolidates classifications across all major countries in one place.

What is HS Code 840310 in Japan

Under Japan's Customs Tariff Schedules of Japan (実行関税率表), HS Code 840310 is the WCO Harmonized System subheading for Boilers. This is the most detailed internationally standardized level; Japan extends classifications to 9 digits under its national tariff system. 840310 belongs to Section XVI: Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles, Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof, Heading 8403: Central heating boilers other than those of heading 8402.

Explore more 2026 Latest Japan import export trade data and shipment records for HS Code Central Heating Boilers on TradeInt global trade data platform

Classification Path of HS Code 840310 in Japan

Section XVI

Chapters (84-85) Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles

Chapter 84

Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof

HS Code 8403

Central heating boilers other than those of heading 8402

HS Code 840310

Boilers

HS Code 840310000

Central heating boilers other than those of heading 84.02. > Boilers セントラルヒーティング用ボイラー（第84.02項のものを除く。） > －ボイラー

Japan Tariff Classification: Customs Tariff Schedules of Japan (Japan HS / Statistical Code)

In Japan, HS 840310 is classified under the Customs Tariff Schedules of Japan (実行関税率表) — a 9-digit national extension of the WCO 6-digit Harmonized System.

Tariff schedule Customs Tariff Schedules of Japan (Japan HS / Statistical Code)

Local name 実行関税率表

Digits 9

Official source https://www.customs.go.jp/english/

You know what 840310 means. Now see 2026 latest real trade activity for Central Heating Boilers in Japan.

Buyers, suppliers, origin and destination countries, shipment dates, and quantities direct from customs records.

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Top Trading Product of HS Code 8403

Top Japan import Product Under HS Code 8403

1 840310: Boilers $3.8M 2 840390: Parts $390.4K

Figures shown for 2025.

For more 2026 recent data, search for Japan import trade records

Top Japan export Product Under HS Code 8403

1 840310: Boilers $18.5M 2 840390: Parts $443.7K

Figures shown for 2025.

For more 2026 recent data, search for Japan export trade records

Related HS Code to Japan Central Heating Boilers (840310)

HS Code 840310000

Central heating boilers other than those of heading 84.02. > Boilers

HS Code 840390

Parts

HS Code 840110

Nuclear reactors (Euratom)

HS Code 840120

Machinery and apparatus for isotopic separation, and parts thereof (Euratom)

HS Code 840130

Fuel elements (cartridges), nonirradiated (Euratom)

HS Code 840140

Parts of nuclear reactors (Euratom)

HS Code 840211

Steam or other vapour generating boilers : Watertube boilers with a steam production exceeding 45 tonnes per hour

HS Code 840212

Steam or other vapour generating boilers : Watertube boilers with a steam production not exceeding 45 tonnes per hour

HS Code 840219

Steam or other vapour generating boilers : Other vapour generating boilers, including hybrid boilers

HS Code 840220

Superheated water boilers

Frequently Asked Questions

What is HS code 840310 in Japan?

HS code 840310 covers Boilers in Japan. It sits in Chapter 84 (Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof), Heading 8403 of the Harmonized System, and is classified under Japan HS / Statistical Code.

Is HS code 840310 the same across all countries?

What system does Japan use to classify HS code 840310?

Where can I officially look up HS code 840310 in Japan?