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HSChapter 54
U.S. imports of nylon filament yarn, single, twisted over 50 turns/meter, not for retail sale (HS 540251) totaled $103K in April 2026, traded with 9 countries.
Importers of Nylon Filament Yarn, Single, Twisted Over 50 Turns/Meter, Not for Retail Sale paid $13K in duties in April 2026 — an effective duty rate of 19% on $67K in dutiable value, based on actual customs collections rather than the published tariff schedule. Nylon Filament Yarn, Single, Twisted Over 50 Turns/Meter, Not for Retail Sale imports of $103K in April 2026 ran 30% below the year-to-date monthly average of $147K.
Last updated: April 2026 dataHigh-twist nylon filament yarn — exceeding 50 turns per meter — is engineered for applications requiring enhanced fabric cover, crêpe effects, or improved abrasion resistance, distinguishing it from low-twist industrial nylon yarns. The entire heading resolves to a single 10-digit line (5402510000), simplifying classification but placing the burden of twist-count verification squarely on the importer. India leads US supply under this heading, with Canada and Mexico also significant sources; imports from Canada and Mexico may benefit from USMCA preferential treatment where applicable rules of origin are met. Buyers sourcing from India should monitor any applicable trade-remedy proceedings affecting nylon yarn.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Crêpe-weave fabrics, hosiery, and fine knitted outerwear often specify high-twist nylon to achieve the characteristic pebbled surface texture and improved drape. The elevated twist level increases yarn torque, which, when woven or knitted, creates the crinkled effect. Technical and performance apparel producers also use high-twist nylon for its enhanced abrasion resistance relative to low-twist constructions.
CBP may require laboratory twist-count testing per standard textile methods (such as ASTM D1422 or equivalent ISO procedures) to confirm that yarn exceeds 50 turns/m and thus belongs in 5402510000 rather than the lower-twist nylon lines. Importers should request mill test certificates documenting twist level and retain them as part of the entry record.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 5402510000 | NYLON FILAMENT TWST >50 TURNS/M | $103K | 19.18% | $13K |
NYLON FILAMENT TWST >50 TURNS/M
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5402510000 | NYLON FILAMENT TWST >50 TURNS/M | $41K |
NYLON FILAMENT TWST >50 TURNS/M
19.4K kg
SYNTHETIC FILAMENT YARN FABRIC FROM THE STRIP
HS 540720
SYN FIL YARN EX SEWING NO RETAIL, POLYESTER
HS 540220
SYNTHETIC STRIP WIDTH NOT > 5MM
HS 540490
SYN FIL YN EXSEW NO RT TX POLYESTER
HS 540233
SYNT FILMT YRN, HIGH TENACITY YARN OF ARAMIDS
HS 540211
SYNT YARN,HIGH TENACTY, NYLON/ OTHR POLYAMIDES,NES
HS 540219
| State | Imports | Exports | Balance |
|---|---|---|---|
| North Carolina | $66K | -- | -$66K |
| New Hampshire | $35K | -- | -$35K |
| Georgia | -- | $17K | +$17K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHARLESTON, SC | $62K | -- | -$62K |
| HIGHGATE SPRINGS-ALBURG, VT | $35K | -- | -$35K |
| LAREDO, TX | -- | $17K | +$17K |