# HS heading 55.06: Synthetic staple fibres, carded, combed or otherwise processed for spinning > HS heading 55.06 covers synthetic staple fibres, carded, combed or otherwise processed for spinning. It is in chapter 55 (man-made staple fibres). It is split into 5 subheadings: 5506.10 (of nylon or other polyamides), 5506.20 (of polyesters), 5506.30 (acrylic or modacrylic), 5506.40 (of polypropylene) and 5506.90 (other). National tariff lines under heading 55.06 are live on border.bot for the United States (5 lines, also used by 1 other country). Source: https://border.bot/hs-codes/5506 Last updated: 11 October 2026 [HS codes](https://border.bot/hs-codes) / [Chapter 55](https://border.bot/hs-codes/55) / [55.06](https://border.bot/hs-codes/5506) ## Key facts - Heading: 55.06 - Description: Synthetic staple fibres, carded, combed or otherwise processed for spinning - Chapter: 55: Man-made staple fibres - Subheadings: 5 - Edition: HS2022 ## What this code covers HS heading 55.06 covers synthetic staple fibres, carded, combed or otherwise processed for spinning. It is split into 5 subheadings: 5506.10 (of nylon or other polyamides), 5506.20 (of polyesters), 5506.30 (acrylic or modacrylic), 5506.40 (of polypropylene) and 5506.90 (other). - [5506.10](https://border.bot/hs-codes/550610) Of nylon or other polyamides - [5506.20](https://border.bot/hs-codes/550620) Of polyesters - [5506.30](https://border.bot/hs-codes/550630) Acrylic or modacrylic - [5506.40](https://border.bot/hs-codes/550640) Of polypropylene - [5506.90](https://border.bot/hs-codes/550690) Other ## What it doesn’t cover Other goods of chapter 55 are classified in its other 15 headings, listed below. - [55.01](https://border.bot/hs-codes/5501) Synthetic filament tow - [55.02](https://border.bot/hs-codes/5502) Artificial filament tow - [55.03](https://border.bot/hs-codes/5503) Synthetic staple fibres, not carded, combed or otherwise processed for spinning - [55.04](https://border.bot/hs-codes/5504) Artificial staple fibres, not carded, combed or otherwise processed for spinning - [55.05](https://border.bot/hs-codes/5505) Waste (including noils, yarn waste and garnetted stock) of man- made fibres - [55.07](https://border.bot/hs-codes/5507) Artificial staple fibres, carded, combed or otherwise processed for spinning - [55.08](https://border.bot/hs-codes/5508) Sewing thread of man-made staple fibres, whether or not put up for retail sale - [55.09](https://border.bot/hs-codes/5509) Yarn (other than sewing thread) of synthetic staple fibres, not put up for retail sale - [55.10](https://border.bot/hs-codes/5510) Yarn (other than sewing thread) of artificial staple fibres, not put up for retail sale - [55.11](https://border.bot/hs-codes/5511) Yarn (other than sewing thread) of man-made staple fibres, put up for retail sale - [55.12](https://border.bot/hs-codes/5512) Woven fabrics of synthetic staple fibres, containing 85 % or more by weight of synthetic staple fibres - [55.13](https://border.bot/hs-codes/5513) Woven fabrics of synthetic staple fibres, containing less than 85 % by weight of such fibres, mixed mainly or solely with cotton, of a weight not exceeding 170 g/m2 - [55.14](https://border.bot/hs-codes/5514) Woven fabrics of synthetic staple fibres, containing less than 85 % by weight of such fibres, mixed mainly or solely with cotton, of a weight exceeding 170 g/m2 - [55.15](https://border.bot/hs-codes/5515) Other woven fabrics of synthetic staple fibres - [55.16](https://border.bot/hs-codes/5516) Woven fabrics of artificial staple fibres ## How it is structured Heading 55.06 is one of 16 headings in chapter 55. Its first two digits, 55, are the chapter; the next two, 06, number the heading within it. Its subheadings add two more digits (5506.10, 5506.20, 5506.30). ## In other countries National tariff lines under heading 55.06 are live on border.bot for the United States (5 lines, also used by 1 other country). - [United States](https://border.bot/countries/united-states/hs-codes/55): 5 lines, used by 1 other country - Previous heading: [55.05](https://border.bot/hs-codes/5505) Waste (including noils, yarn waste and garnetted stock) of man- made fibres - Next heading: [55.07](https://border.bot/hs-codes/5507) Artificial staple fibres, carded, combed or otherwise processed for spinning ## Frequently asked questions ### What does HS heading 55.06 cover? HS heading 55.06 covers synthetic staple fibres, carded, combed or otherwise processed for spinning. ### Which chapter is HS heading 55.06 in? HS heading 55.06 is in chapter 55 (man-made staple fibres). ### How many subheadings does HS heading 55.06 have? HS heading 55.06 has 5 subheadings: 5506.10 (of nylon or other polyamides), 5506.20 (of polyesters), 5506.30 (acrylic or modacrylic), 5506.40 (of polypropylene) and 5506.90 (other). ### Which countries’ tariffs list national lines under HS heading 55.06? National tariff lines under heading 55.06 are live on border.bot for the United States (5 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/5506.json