U.S. imports of Textured Nylon & Polyamide Filament Yarn, Not Over 500 Decitex (HS 540231) totaled $753K in August 2026, imported from 21 countries.
Importers of Textured Nylon & Polyamide Filament Yarn, Not Over 500 Decitex paid $112K in duties in August 2026, an average duty rate of 14.88% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 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.
70 import shipments a month
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.
ImportsExports
Imports
$753KYoY · free account
Exports
$440KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $8.6M of Textured Nylon & Polyamide Filament Yarn, Not Over 500 Decitex and exported $6.5M.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Thailand and Taiwan together supply 63% of it. Thailand pays 20.8% duty; Mexico 0.0%.
customs district
destination
entry
rate provision · imports
10.0% enters free of duty; duty collected equals 14.88% of imports for consumption.
Subheading 12 of 22 in heading 5402
Subheading 540231 · $753K of $62.2M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 5402316000 | Nylon Textured Multiple Yn Lt=500 Dectex Nt Retail | $380K | 16.91% | 100.00% | $64K |
| 5402313000 | Nylon Textured Single Yrn Lt=500 Decitex Nt Retail | $372K | 12.81% | 79.71% | $48K |
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 | $440K |
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.
Trade Directory
List your company under HS 540231 — Textured Nylon & Polyamide Filament Yarn, Not Over 500 Decitex, so the companies trading it can find you. Be the first supplier listed.