# HS code 8420.99: Parts

> HS code 8420.99 covers parts, other than those classified in 8420.91. It sits in heading 84.20 (calendering or other rolling machines, other than for metals or glass, and cylinders therefor) in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof). Other goods of heading 84.20 are classified under 8420.10 (calendering or other rolling machines) and 8420.91 (parts, cylinders).

Source: https://staging.border.bot/hs-codes/842099
Last updated: 13 October 2026

[HS codes](https://staging.border.bot/hs-codes) / [Chapter 84](https://staging.border.bot/hs-codes/84) / [84.20](https://staging.border.bot/hs-codes/8420) / [8420.99](https://staging.border.bot/hs-codes/842099)

## Key facts

- HS code: 8420.99
- Covers: Parts
- Heading: [84.20: Calendering or other rolling machines, other than for metals or glass, and cylinders therefor](https://staging.border.bot/hs-codes/8420)
- Chapter: [84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof](https://staging.border.bot/hs-codes/84)
- Edition: HS2022
- Duty rates: [Set by each country’s tariff](https://staging.border.bot/countries)

## What this code covers

HS code 8420.99 covers parts, other than those classified in 8420.91.

The legal text of the subheading is “Parts: Other”, read under “Parts”, in HS2022.

## What it doesn’t cover

Other goods of heading 84.20 are classified under 8420.10 (calendering or other rolling machines) and 8420.91 (parts, cylinders).

- [8420.10](https://staging.border.bot/hs-codes/842010) Calendering or other rolling machines
- [8420.91](https://staging.border.bot/hs-codes/842091) Parts: Cylinders

## How it is structured

8420.99 is a six-digit subheading. Its first two digits, 84, are the chapter; the first four, 8420, are heading 84.20; the last two, 99, 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 84.20: Calendering or other rolling machines, other than for metals or glass, and cylinders therefor
- Within the heading: Parts
- Subheading 8420.99: Other

## In other countries

No national tariff lines under 8420.99 are live on border.bot yet. Tariffs built on the Harmonized System (HS2022) use 8420.99 at six digits and add their own digits after it.

- Previous subheading: [8420.91](https://staging.border.bot/hs-codes/842091) Parts: Cylinders
- Next subheading: [8421.11](https://staging.border.bot/hs-codes/842111) Centrifuges, including centrifugal dryers: Cream separators

## Frequently asked questions

### What does HS code 8420.99 cover?

HS code 8420.99 covers parts, other than those classified in 8420.91.

### Which heading and chapter is HS code 8420.99 in?

HS code 8420.99 is in heading 84.20 (calendering or other rolling machines, other than for metals or glass, and cylinders therefor) in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof).

### Where are goods of heading 84.20 classified when 8420.99 doesn’t fit?

Other goods of heading 84.20 are classified under 8420.10 (calendering or other rolling machines) and 8420.91 (parts, cylinders).

## Sources and updates

The Harmonized System legal text comes from border.bot release 1 (edition HS 2022), imported from a file, and has been live since 13 October 2026.

This page was last updated on 13 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://staging.border.bot/hs-codes/842099.json