# HS code 8483.90: Toothed wheels, chain sprockets and other transmission elements presented separately; parts

> HS code 8483.90 covers toothed wheels, chain sprockets and other transmission elements presented separately; parts. It sits in heading 84.83 (transmission shafts (including cam shafts and crank shafts) and cranks; bearing housings 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)) in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof). Other goods of heading 84.83 are classified under 8483.10 (transmission shafts (including cam shafts and crank shafts) and cranks), 8483.20 (bearing housings, incorporating ball or roller bearings), 8483.30 (bearing housings, not incorporating ball or roller bearings; plain shaft bearings), 8483.40 (gears 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 converters) or 2 others. National tariff lines under 8483.90 are live on border.bot for the United States (11 lines, also used by 1 other country).

Source: https://border.bot/hs-codes/848390
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 84](https://border.bot/hs-codes/84) / [84.83](https://border.bot/hs-codes/8483) / [8483.90](https://border.bot/hs-codes/848390)

## Key facts

- HS code: 8483.90
- Covers: Toothed wheels, chain sprockets and other transmission elements presented separately; parts
- Heading: [84.83: Transmission shafts (including cam shafts and crank shafts) and cranks; bearing housings 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)](https://border.bot/hs-codes/8483)
- Chapter: [84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof](https://border.bot/hs-codes/84)
- Edition: HS2022
- Duty in the United States: [See its 11 lines](https://border.bot/countries/united-states/hs-codes/848390)

## What this code covers

HS code 8483.90 covers toothed wheels, chain sprockets and other transmission elements presented separately; parts.

The legal text of the subheading is “Toothed wheels, chain sprockets and other transmission elements presented separately; parts”, in HS2022.

## What it doesn’t cover

Other goods of heading 84.83 are classified under 8483.10 (transmission shafts (including cam shafts and crank shafts) and cranks), 8483.20 (bearing housings, incorporating ball or roller bearings), 8483.30 (bearing housings, not incorporating ball or roller bearings; plain shaft bearings), 8483.40 (gears 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 converters) or 2 others.

- [8483.10](https://border.bot/hs-codes/848310) Transmission shafts (including cam shafts and crank shafts) and cranks
- [8483.20](https://border.bot/hs-codes/848320) Bearing housings, incorporating ball or roller bearings
- [8483.30](https://border.bot/hs-codes/848330) Bearing housings, not incorporating ball or roller bearings; plain shaft bearings
- [8483.40](https://border.bot/hs-codes/848340) Gears 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 converters
- [8483.50](https://border.bot/hs-codes/848350) Flywheels and pulleys, including pulley blocks
- [8483.60](https://border.bot/hs-codes/848360) Clutches and shaft couplings (including universal joints)

## How it is structured

8483.90 is a six-digit subheading. Its first two digits, 84, are the chapter; the first four, 8483, are heading 84.83; the last two, 90, identify the subheading within the heading.

Countries add their own digits after these six for their national tariff lines.

- Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof
- Heading 84.83: Transmission shafts (including cam shafts and crank shafts) and cranks; bearing housings 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)
- Subheading 8483.90: Toothed wheels, chain sprockets and other transmission elements presented separately; parts

## In other countries

National tariff lines under 8483.90 are live on border.bot for the United States (11 lines, also used by 1 other country).

- [United States](https://border.bot/countries/united-states/hs-codes/848390): 11 lines, used by 1 other country

- Previous subheading: [8483.60](https://border.bot/hs-codes/848360) Clutches and shaft couplings (including universal joints)
- Next subheading: [8484.10](https://border.bot/hs-codes/848410) Gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal

## Frequently asked questions

### What does HS code 8483.90 cover?

HS code 8483.90 covers toothed wheels, chain sprockets and other transmission elements presented separately; parts.

### Which heading and chapter is HS code 8483.90 in?

HS code 8483.90 is in heading 84.83 (transmission shafts (including cam shafts and crank shafts) and cranks; bearing housings 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)) in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof).

### Where are goods of heading 84.83 classified when 8483.90 doesn’t fit?

Other goods of heading 84.83 are classified under 8483.10 (transmission shafts (including cam shafts and crank shafts) and cranks), 8483.20 (bearing housings, incorporating ball or roller bearings), 8483.30 (bearing housings, not incorporating ball or roller bearings; plain shaft bearings), 8483.40 (gears 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 converters) or 2 others.

### Which countries’ tariffs list national lines under HS code 8483.90?

National tariff lines under 8483.90 are live on border.bot for the United States (11 lines, also used by 1 other country).

## Sources and updates

The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.

This page was last updated on 11 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.

Machine-readable: https://border.bot/hs-codes/848390.json