Product Classification Guide

HS Code for Synthetic filament tow

5501.90 Fibres; synthetic filament tow, of synthetic materials n.e.c. in heading no. 5501
Textiles & Clothing
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Synthetic filament tow is classified under HS code 5501.90. This product is a precursor in the production of staple fibers and is governed by the specific notes of Chapter 55. According to the Chapter 55 Note 1, 'tow' must consist of parallel filaments of a uniform length equal to the length of the tow. It must meet several technical criteria: the length must exceed 2 meters, the twist must be less than 5 turns per meter, the filaments must measure less than 67 decitex each, and the total weight of the tow must be more than 20,000 decitex. Subheading 5501.90 is the residual category for tow made of synthetic materials other than those specified in 5501.10 through 5501.40 (nylon, polyester, acrylic, and polypropylene). This includes specialty polymers like aramids or elastomeric fibers. The classification is based on the physical dimensions and the chemical composition of the filaments.

Products Included

  • Aramid filament tow for high-strength fibers
  • Modacrylic filament tow for flame-retardant textiles
  • Synthetic filament tow of vinyl polymers
  • Elastomeric filament tow exceeding 2 meters in length
  • Specialty synthetic tow for technical textile applications

Common Misclassification

Synthetic filament tow is often misclassified as synthetic filament yarn (Chapter 54). However, yarn is intended for direct use in weaving or knitting and usually has a higher twist or different packaging. It is also confused with artificial filament tow (5502), which is made from cellulose-based polymers like rayon. Furthermore, if the tow is cut into short lengths (less than 2 meters), it is no longer classified as tow but as synthetic staple fibers under heading 5503. Finally, if it does not meet the decitex (weight/thickness) requirements, it may be classified as a bundle of filaments in Chapter 54.

FAQ

What is the HS code for synthetic filament tow?

The HS code for synthetic filament tow of materials other than nylon, polyester, acrylic, or polypropylene is 5501.90.

What is the difference between tow and staple fiber?

Tow (5501) consists of continuous, parallel filaments in a large bundle, whereas staple fiber (5503) consists of tow that has been cut into short, discrete lengths for spinning into yarn.

Industry

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Frequently Asked Questions

What is the HS code for Synthetic filament tow?

The HS code for Synthetic filament tow is 550190 (Fibres; synthetic filament tow, of synthetic materials n.e.c. in heading no. 5501).

How do I classify Synthetic filament tow for customs?

Synthetic filament tow is classified under HS code 550190 — Fibres; synthetic filament tow, of synthetic materials n.e.c. in heading no. 5501. This is a 6-digit subheading level code.

Is the HS code for Synthetic filament tow the same in all countries?

The base HS code 550190 for Synthetic filament tow is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.