HS Code for Plastic monofilament

Plastic monofilament is classified under HS code 3916.90 based on a combination of its chemical composition, physical dimensions, and the degree to which it has been processed. Chapter 39 of the Harmonized System is dedicated to plastics and articles thereof, and Heading 3916 specifically addresses monofilament of which any cross-sectional dimension exceeds 1 mm, as well as rods, sticks, and profile shapes. The 1 mm threshold is a critical legal demarcation point established by the Section and Chapter Notes; if the cross-sectional dimension were 1 mm or less, the product would typically be excluded from Chapter 39 and instead classified as a textile material under Section XI, specifically under heading 5404. Subheading 3916.90 acts as the "other" category within this heading, covering monofilaments and profile shapes made from plastics other than polymers of ethylene (which fall under 3916.10) or polymers of vinyl chloride (which fall under 3916.20). This includes a wide array of technical polymers such as polyamides (nylon), polyesters, acrylics, or polycarbonates. These products are generally classified here when they are "not otherwise worked," meaning they have been produced via extrusion or similar processes but have not been further fabricated into finished consumer goods. They serve as essential raw materials for industrial brush bristles, heavy-duty fishing lines, 3D printing filaments, and various structural or decorative profile shapes used in construction and furniture manufacturing.

Products Included

• Nylon monofilament with a diameter exceeding 1 mm
• Polycarbonate rods for industrial machining
• Acrylic profile shapes for architectural trim
• Polyester sticks used in manufacturing
• Extruded plastic tubes with a non-circular cross-section
• 3D printing filament (PLA, ABS, PETG) exceeding 1 mm diameter
• Plastic structural profiles for window frames

Common Misclassification

The most common misclassification involves heading 5404, which covers synthetic monofilament of 67 decitex or more and of which no cross-sectional dimension exceeds 1 mm. If the filament is thinner than 1 mm, it is a textile; if thicker, it is a plastic profile (3916). Additionally, finished articles made from these filaments, such as finished brush heads, should be classified under 9603 rather than 3916.90.

FAQ

What is the HS code for plastic monofilament?

The HS code for plastic monofilament with a cross-section exceeding 1 mm, made from polymers other than ethylene or vinyl chloride, is 3916.90.

What if the monofilament is less than 1 mm thick?

If the cross-sectional dimension is 1 mm or less, the product is classified as a textile material under heading 5404 or 5402, depending on its specific characteristics.