HS code · 6-digit subheading
HS Code 5402.45 – Yarn, synthetic; filament, monofilament (less than 67 decitex), of nylon or other polymides (not high tenacity or textured), single, untwisted or twisted 50 turns or less per metre, not for retail sale, not sewing thread
HS code 5402.45 is the 6-digit subheading for yarn, synthetic, filament, monofilament (less than 67 decitex), of nylon or other polymides (not high tenacity or textured), single, untwisted or twisted 50 turns or less per metre, not for retail sale, not sewing thread. It is used for fine Denier Nylon Filament Yarn, polyamide Microfilament Yarn, nylon 6 Yarn (fine denier), nylon 66 Yarn (fine denier) and untwisted Nylon Yarn.
What HS 5402.45 covers
This HS code pertains to fine, non-textured, non-high tenacity nylon (polyamide) filament yarns, with a linear density under 67 decitex. These yarns are single, have a low twist (50 turns or less per meter), and are exclusively for industrial use, not retail or sewing. Nylon is prized for its strength, elasticity, abrasion resistance, and smooth feel, making these fine yarns suitable for delicate yet durable fabrics. Importers are typically manufacturers of hosiery, lingerie, lightweight apparel, and technical textiles in countries with developed textile industries, including Italy, Germany, and various Asian manufacturing hubs. Exporters are often large-scale synthetic fiber producers, primarily from China, Taiwan, South Korea, and the USA, where the necessary petrochemical infrastructure and spinning technologies are well-established. The "less than 67 decitex" signifies a very fine yarn, ideal for sheer or lightweight applications, while the "not high tenacity or textured" distinguishes it from more specialized nylon yarns.
- Covers
- Fine Denier Nylon Filament Yarn
- Polyamide Microfilament Yarn
- Nylon 6 Yarn (fine denier)
- Nylon 66 Yarn (fine denier)
- Untwisted Nylon Yarn
- Low-Twist Polyamide Yarn
- Examples
- Invista CORDURA (fine denier versions)
- Toray Nylon Yarn
- Hyosung Nylon Yarn
- BASF Ultramid (as yarn)
- Ascend Performance Materials Nylon
Codes often confused with 5402.45
Common mistake. This code can be confused with 540247 (polyester filament yarn of similar fineness) if the polymer type is not correctly identified, or with 540231 (textured nylon yarn) if the "textured" aspect is overlooked.
Top exporters and importers of HS code 540245, 2025
In 2025, the largest exporter of HS code 540245 in UN Comtrade data was China, with 38% of world exports; the largest importer in UN Comtrade data was India, with 16% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 China $328M 38% of world exports
- 2 Vietnam* ~$115M 13% of world exports · partner records ↗
- 3 Italy $83M 9.6% of world exports
World total: $859M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 India $152M 16% of world imports
- 2 South Korea $90M 9.6% of world imports
- 3 Italy $69M 7.4% of world imports
World total: $936M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM codes for 5402.45 3
Brazil splits HS 5402.45 into 3 NCM codes, Mercosur's 8-digit tariff lines.
- 5402.45.10 Aramid single yarn, max 50 turns/mDe aramidas
- 5402.45.20 Nylon single yarn, max 50 turns/mDe náilon
- 5402.45.90 Other polyamide single yarn, max 50 turns/mOutros
All Brazil NCM codes in heading 54.02 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 5402.45
What is HS code 540245?
HS code 540245 is a 6-digit subheading in the Harmonized System that covers: Yarn, synthetic; filament, monofilament (less than 67 decitex), of nylon or other polymides (not high tenacity or textured), single, untwisted or twisted 50 turns or less per metre, not for retail sale, not sewing thread. This HS code pertains to fine, non-textured, non-high tenacity nylon (polyamide) filament yarns, with a linear density under 67 decitex. These yarns are single, have a low twist (50 turns or less per meter), and are exclusively for industrial use, not retail or sewing. Nylon is prized for its strength, elasticity, abrasion resistance, and smooth feel, making these fine yarns suitable for delicate yet durable fabrics. Importers are typically manufacturers of hosiery, lingerie, lightweight apparel, and technical textiles in countries with developed textile industries, including Italy, Germany, and various Asian manufacturing hubs. Exporters are often large-scale synthetic fiber producers, primarily from China, Taiwan, South Korea, and the USA, where the necessary petrochemical infrastructure and spinning technologies are well-established. The "less than 67 decitex" signifies a very fine yarn, ideal for sheer or lightweight applications, while the "not high tenacity or textured" distinguishes it from more specialized nylon yarns.
What products fall under HS code 540245?
Fine Denier Nylon Filament Yarn, Polyamide Microfilament Yarn, Nylon 6 Yarn (fine denier), Nylon 66 Yarn (fine denier), Untwisted Nylon Yarn, Low-Twist Polyamide Yarn
What are common misclassifications for HS code 540245?
This code can be confused with 540247 (polyester filament yarn of similar fineness) if the polymer type is not correctly identified, or with 540231 (textured nylon yarn) if the "textured" aspect is overlooked.
Which countries are the top exporters of goods under HS code 540245?
In 2025, the top exporters of HS code 540245 in UN Comtrade data were China ($328M, 38% of world exports), Vietnam (about $115M) and Italy ($83M). World exports came to about $859M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of goods under HS code 540245?
In 2025, the top importers of HS code 540245 in UN Comtrade data were India ($152M, 16% of world imports), South Korea ($90M) and Italy ($69M). World imports came to about $936M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
How is HS code 540245 structured?
HS code 540245 is a 6-digit subheading under the Harmonized System. The first 2 digits (54) identify the chapter, digits 3-4 (02) identify the heading, and digits 5-6 (45) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 540245?
Brazil splits HS code 540245 into 3 NCM codes: 5402.45.10 (Aramid single yarn, max 50 turns/m), 5402.45.20 (Nylon single yarn, max 50 turns/m), 5402.45.90 (Other polyamide single yarn, max 50 turns/m). The first 6 digits of each match the HS code.