What are synthetic staple fibres?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
HS-4 · Heading
5503 — Synthetic staple fibres, not carded, combed or otherwise processed for spinning
Chapter 55: Man-made staple fibres
Plain-language overview
Use HS-4 5503 when importing synthetic staple fibres that are not carded, combed, or otherwise processed for spinning. For example, if you are shipping aramid fibres for use in high-performance textiles, this is the correct classification.
When deciding between the HS-6 lines under 5503, consider the specific type of synthetic fibre. For instance, 550311 is for aramid fibres, while 550319 covers nylon or other polyamides. Knowing the exact composition of your fibres helps ensure accurate classification.
If your shipment consists of polyester fibres, you should use 550320. However, if you have acrylic or modacrylic fibres, 550330 is the appropriate code. This distinction is crucial for compliance and duty assessment.
Additionally, 550340 is designated for polypropylene fibres. If your product does not fit any of the previous categories, you may need to use 550390, which covers synthetic materials not elsewhere classified in this heading.
Keywords & topics
Useful terms traders and brokers use for this HS-4 heading.
synthetic staple fibres · aramid fibres · nylon fibres · polyester fibres · acrylic fibres · polypropylene fibres · modacrylic fibres · HS-4 5503 · fibres not processed for spinning · import classification · synthetic materials · HS-6 subheadings · trade compliance · duty assessment · textile fibres · non-woven fabrics
Examples
Drawn from the official tariff wording for this HS-4 heading. Always confirm against your published schedule and legal notes.
- Aramid fibres for protective clothing
- Nylon staple fibres for upholstery
- Polyester fibres for clothing manufacturing
- Acrylic fibres for blankets and carpets
- Polypropylene fibres for industrial applications
- Modacrylic fibres for flame-resistant textiles
- Other synthetic staple fibres not specified
Common questions
Frequent classification questions with short practical guidance.
How to classify aramid fibres?
Write down material, use, and product form first, then compare nearby lines before you lock the code.
What is the difference between nylon and polyester fibres?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
Which HS code for acrylic fibres?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
How to determine the right HS-6 line for synthetic fibres?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
What are the applications of polypropylene fibres?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
How to import synthetic staple fibres?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
Related topics
Common real-world topics that come up during code comparison.
importing synthetic staple fibres HS-4 5503
Check the exact product specs and destination-country tariff notes before finalizing the code.
classification of aramid and nylon fibres
Use this topic to narrow your shortlist, then validate the final code against legal wording.
choosing the right HS code for polyester fibres
Use this topic to narrow your shortlist, then validate the final code against legal wording.
differences between acrylic and modacrylic fibres
Compare adjacent HS lines and pick the one that matches material, function, and product form most closely.
understanding HS-6 subheadings for synthetic fibres
Use this topic to narrow your shortlist, then validate the final code against legal wording.
synthetic materials not elsewhere classified
Use this topic to narrow your shortlist, then validate the final code against legal wording.
duty rates for synthetic staple fibres
Use this topic to narrow your shortlist, then validate the final code against legal wording.
best practices for importing textile fibres
Check the exact product specs and destination-country tariff notes before finalizing the code.
Questions & answers
For orientation only—the binding text is your national tariff and the WCO nomenclature your country uses.
- What types of synthetic staple fibres fall under HS-4 5503?
- HS-4 5503 includes synthetic staple fibres such as aramid, nylon, polyester, acrylic, modacrylic, and polypropylene that are not carded or combed.
- How do I determine the correct HS-6 code for my synthetic fibres?
- Identify the specific type of fibre in your shipment. Each HS-6 code under 5503 corresponds to different synthetic materials, such as aramid or polyester.
- Are there any processing requirements for HS-4 5503 fibres?
- Fibres classified under HS-4 5503 must not be carded, combed, or otherwise processed for spinning.
- What is the significance of the 'n.e.c.' in HS-6 550390?
- 'N.e.c.' stands for 'not elsewhere classified,' meaning this code is for synthetic fibres that do not fit into the other specified categories.
- What should I do if my synthetic fibres don't fit any HS-6 subheading?
- If your fibres do not match any specific HS-6 line, consider using HS-6 550390 for synthetic materials not classified elsewhere.
- What are the common uses for synthetic staple fibres?
- Synthetic staple fibres are commonly used in textiles, upholstery, industrial applications, and protective clothing.
- How can I ensure compliance when importing synthetic fibres?
- Ensure you accurately classify your fibres using the correct HS code and understand the applicable regulations and duty rates.
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HS-6 subheadings (6)
- 550311Fibres; synthetic staple fibres, of aramids, not carded, combed or otherwise processed for spinning
- 550319Fibres; synthetic staple fibres, of nylon or other polyamides other than aramids, not carded, combed or otherwise processed for spinning
- 550320Fibres; synthetic staple fibres, of polyesters, not carded, combed or otherwise processed for spinning
- 550330Fibres; synthetic staple fibres, acrylic or modacrylic, not carded, combed or otherwise processed for spinning
- 550340Fibres; synthetic staple fibres, of polypropylene, not carded, combed or otherwise processed for spinning
- 550390Fibres; synthetic staple fibres, of synthetic materials n.e.c. in heading no. 5503, not carded, combed or otherwise processed for spinning