# HS heading 79.03: Zinc dust, powders and flakes

> HS heading 79.03 covers zinc dust, powders and flakes. It is in chapter 79 (zinc and articles thereof). It is split into 2 subheadings: 7903.10 (zinc dust) and 7903.90 (other).

Source: https://staging.border.bot/hs-codes/7903
Last updated: 13 October 2026

[HS codes](https://staging.border.bot/hs-codes) / [Chapter 79](https://staging.border.bot/hs-codes/79) / [79.03](https://staging.border.bot/hs-codes/7903)

## Key facts

- Heading: 79.03
- Description: Zinc dust, powders and flakes
- Chapter: 79: Zinc and articles thereof
- Subheadings: 2
- Edition: HS2022

## What this code covers

HS heading 79.03 covers zinc dust, powders and flakes.

It is split into 2 subheadings: 7903.10 (zinc dust) and 7903.90 (other).

- [7903.10](https://staging.border.bot/hs-codes/790310) Zinc dust
- [7903.90](https://staging.border.bot/hs-codes/790390) Other

## What it doesn’t cover

Other goods of chapter 79 are classified in its other 5 headings, listed below.

- [79.01](https://staging.border.bot/hs-codes/7901) Unwrought zinc
- [79.02](https://staging.border.bot/hs-codes/7902) Zinc waste and scrap
- [79.04](https://staging.border.bot/hs-codes/7904) Zinc bars, rods, profiles and wire
- [79.05](https://staging.border.bot/hs-codes/7905) Zinc plates, sheets, strip and foil
- [79.07](https://staging.border.bot/hs-codes/7907) Other articles of zinc

## How it is structured

Heading 79.03 is one of 6 headings in chapter 79. Its first two digits, 79, are the chapter; the next two, 03, number the heading within it. Its subheadings add two more digits (7903.10, 7903.90).

## In other countries

No national tariff lines under heading 79.03 are live on border.bot yet. Tariffs built on the Harmonized System use its subheadings at six digits and add their own digits after them.

- Previous heading: [79.02](https://staging.border.bot/hs-codes/7902) Zinc waste and scrap
- Next heading: [79.04](https://staging.border.bot/hs-codes/7904) Zinc bars, rods, profiles and wire

## Frequently asked questions

### What does HS heading 79.03 cover?

HS heading 79.03 covers zinc dust, powders and flakes.

### Which chapter is HS heading 79.03 in?

HS heading 79.03 is in chapter 79 (zinc and articles thereof).

### How many subheadings does HS heading 79.03 have?

HS heading 79.03 has 2 subheadings: 7903.10 (zinc dust) and 7903.90 (other).

## 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/7903.json