# HS code 5506.90: Synthetic staple fibres, carded, combed or otherwise processed for spinning

> HS code 5506.90 covers synthetic staple fibres, carded, combed or otherwise processed for spinning, other than those classified in 5506.10, 5506.20, 5506.30 and 5506.40. It sits in heading 55.06 (synthetic staple fibres, carded, combed or otherwise processed for spinning) in chapter 55 (man-made staple fibres). Other goods of heading 55.06 are classified under 5506.10 (of nylon or other polyamides), 5506.20 (of polyesters), 5506.30 (acrylic or modacrylic) or 5506.40 (of polypropylene).

Source: https://staging.border.bot/hs-codes/550690
Last updated: 13 October 2026

[HS codes](https://staging.border.bot/hs-codes) / [Chapter 55](https://staging.border.bot/hs-codes/55) / [55.06](https://staging.border.bot/hs-codes/5506) / [5506.90](https://staging.border.bot/hs-codes/550690)

## Key facts

- HS code: 5506.90
- Covers: Synthetic staple fibres, carded, combed or otherwise processed for spinning
- Heading: [55.06: Synthetic staple fibres, carded, combed or otherwise processed for spinning](https://staging.border.bot/hs-codes/5506)
- Chapter: [55: Man-made staple fibres](https://staging.border.bot/hs-codes/55)
- Edition: HS2022
- Duty rates: [Set by each country’s tariff](https://staging.border.bot/countries)

## What this code covers

HS code 5506.90 covers synthetic staple fibres, carded, combed or otherwise processed for spinning, other than those classified in 5506.10, 5506.20, 5506.30 and 5506.40.

The legal text of the subheading is “Other”, in HS2022.

## What it doesn’t cover

Other goods of heading 55.06 are classified under 5506.10 (of nylon or other polyamides), 5506.20 (of polyesters), 5506.30 (acrylic or modacrylic) or 5506.40 (of polypropylene).

- [5506.10](https://staging.border.bot/hs-codes/550610) Of nylon or other polyamides
- [5506.20](https://staging.border.bot/hs-codes/550620) Of polyesters
- [5506.30](https://staging.border.bot/hs-codes/550630) Acrylic or modacrylic
- [5506.40](https://staging.border.bot/hs-codes/550640) Of polypropylene

## How it is structured

5506.90 is a six-digit subheading. Its first two digits, 55, are the chapter; the first four, 5506, are heading 55.06; the last two, 90, identify the subheading within the heading.

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

- Chapter 55: Man-made staple fibres
- Heading 55.06: Synthetic staple fibres, carded, combed or otherwise processed for spinning
- Subheading 5506.90: Other

## In other countries

No national tariff lines under 5506.90 are live on border.bot yet. Tariffs built on the Harmonized System (HS2022) use 5506.90 at six digits and add their own digits after it.

- Previous subheading: [5506.40](https://staging.border.bot/hs-codes/550640) Of polypropylene
- Next subheading: [5507.00](https://staging.border.bot/hs-codes/550700) Artificial staple fibres, carded, combed or otherwise processed for spinning

## Frequently asked questions

### What does HS code 5506.90 cover?

HS code 5506.90 covers synthetic staple fibres, carded, combed or otherwise processed for spinning, other than those classified in 5506.10, 5506.20, 5506.30 and 5506.40.

### Which heading and chapter is HS code 5506.90 in?

HS code 5506.90 is in heading 55.06 (synthetic staple fibres, carded, combed or otherwise processed for spinning) in chapter 55 (man-made staple fibres).

### Where are goods of heading 55.06 classified when 5506.90 doesn’t fit?

Other goods of heading 55.06 are classified under 5506.10 (of nylon or other polyamides), 5506.20 (of polyesters), 5506.30 (acrylic or modacrylic) or 5506.40 (of polypropylene).

## 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/550690.json