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U.S. imports of textured nylon & polyamide filament yarn, not over 500 decitex (HS 540231) totaled $764K in July 2026, traded with 21 countries.
Importers of Textured Nylon & Polyamide Filament Yarn, Not Over 500 Decitex paid $123K in duties in July 2026 — an effective duty rate of 19% on $654K in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataTextured nylon yarn at or below 500 decitex is the fine-count segment used predominantly in hosiery, lingerie, swimwear, and lightweight sportswear fabrics, where bulk, stretch recovery, and soft hand are the key performance attributes. Thailand leads US supply under this heading, followed by Italy and Mexico. The 500 decitex ceiling is the critical classification threshold: yarn measured above that limit shifts to heading 540232, so accurate linear density testing is essential before filing entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
51 shipments/mo
The US schedule splits textured nylon yarn into two headings — 540231 for yarn at or below 500 decitex and 540232 for yarn above 500 decitex — and the applicable duty rates differ between them. A misstatement of linear density, even by a small margin, can result in a different tariff line, potential penalties, and a demand for reliquidation.
False-twist texturing is by far the most common method for fine nylon yarn in this decitex range, imparting crimp and bulk without significantly increasing linear density. Air-jet and stuffer-box texturing are less common at these counts. The texturing method itself does not change the HTS classification, but it affects end-use suitability and buyer specifications.
HSChapter 54
Subheading 13 of 22 in heading 5402
Subheading 540231 · $764K of $59.9M
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 5402313000 | Nylon Textured Single Yrn Lt=500 Decitex Nt Retail | $536K | 15.49% | 79.32% | $83K |
| 5402316000 | Nylon Textured Multiple Yn Lt=500 Dectex Nt Retail | $229K | 17.34% | 100.00% | $40K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5402310000 | Syn Fil Yn Exsew No Rt Tx Nylon Yn Nov 500 Decitex | $418K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$764KYoY · Pro
Exports
$418KYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Thailand and France together supply 41% of it.
customs district
destination
entry
rate provision · imports
14.5% enters free of duty; the effective duty rate is 16.04%.