HS Code for Synthetic monofilament

Synthetic monofilament is classified under HS code 5404.19 based on its physical dimensions and material composition as defined in the Harmonized System's Chapter 54. This chapter covers man-made filaments, and heading 5404 specifically addresses synthetic monofilament of 67 decitex or more, provided that no cross-sectional dimension exceeds 1 mm. Subheading 5404.19 is a residual category for monofilaments that do not fall under the specific subheadings for elastomeric or polypropylene materials. The classification depends strictly on the linear density (decitex) and the thickness. If the cross-section exceeds 1 mm, the product is no longer considered a textile filament but is instead classified as a plastic shape under Chapter 39. This distinction is critical for customs compliance, as it changes the applicable duty rates and regulatory requirements. The material must be synthetic, such as nylon or polyester, to remain within this heading.

Products Included

• Nylon monofilament for industrial use
• Polyester monofilament for mesh production
• Bulk synthetic fishing line (not put up for retail sale)
• 3D printer filament (if cross-section is 1mm or less)
• Synthetic bristles for brushes (meeting decitex requirements)

Common Misclassification

A frequent error involves confusing 5404.19 with HS code 3916. While both cover monofilaments, 3916 is used when any cross-sectional dimension exceeds 1 mm, classifying the item as a plastic rod or profile. Additionally, synthetic filament yarn under 5402 is often confused with monofilament; however, 5402 applies to yarns with a linear density of less than 67 decitex. Importers must also distinguish these from 5404.11, which is reserved specifically for elastomeric monofilament.

FAQ

What is the HS code for synthetic monofilament?

The HS code for synthetic monofilament of 67 decitex or more, with a cross-section not exceeding 1mm (excluding elastomeric and polypropylene), is 5404.19.

How does decitex affect the classification of monofilament?

Decitex measures the mass in grams per 10,000 meters. If the monofilament is less than 67 decitex, it is generally classified as synthetic filament yarn under heading 5402 rather than 5404.