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U.S. exports of single nylon & polyamide filament yarn, untwisted or low-twist (non-elastomeric) (HS 540245) totaled $2.7M in July 2026.
Importers of Single Nylon & Polyamide Filament Yarn, Untwisted or Low-Twist (Non-Elastomeric) paid $167K in duties in July 2026 — an effective duty rate of 17% on $1.0M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataSingle nylon and polyamide filament yarns with twist not exceeding 50 turns per meter — excluding elastomeric constructions — are foundational inputs for woven apparel fabrics, tricot knits, and technical textiles such as airbag fabric and parachute cloth. Mexico leads US supply under this heading, with Vietnam and South Korea also prominent. The seven 10-digit lines span a range of constructions from untwisted monofilament to low-twist multifilament, with separate lines for colored versus uncolored yarn (e.g., 5402451000 for colored multifilament), making accurate color and construction declarations on entry documents important for correct line-level classification.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
55 shipments/mo
Line 5402451000 is specifically reserved for colored nylon multifilament yarn that is untwisted or with twist less than 5 turns per meter, while 5402459010 and related lines cover uncolored or other constructions. 'Colored' in this context means the yarn has been dyed or solution-dyed prior to importation. Misidentifying a dyed yarn as undyed — or vice versa — places the entry on the wrong 10-digit line and can trigger reclassification upon examination.
Mexico's prominence under this heading is consistent with the integrated North American textile supply chain supported by USMCA, under which qualifying nylon yarn may move duty-free between the US and Mexico when rules of origin are met. US apparel and fabric manufacturers with cut-and-sew operations in Mexico frequently source nylon yarn regionally to maintain tariff preference eligibility, making origin documentation and fiber content certification routine compliance requirements for these trade flows.
HSChapter 54
Subheading 10 of 22 in heading 5402
Subheading 540245 · $1.7M of $59.9M
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ImportsExports
Imports
$1.7MYoY · Pro
Exports
$2.7MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
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 |
|---|---|---|---|---|---|
| 5402459030 | Nyl Mono/Multiflt Untwt/Twt Yn N Lt 5 Trn/M, NESOI | $1.4M | 10.22% | 57.42% | $146K |
| 5402459040 | Nylon Multiflmnt Yrn Tws Gt=5 Lt=50 Trn/M, NESOI | $197K | 9.23% | 86.89% | $18K |
| 5402459010 | Nyl Multiflt,Untwt/Twt Yn Nt Lt 5 Trn/M, Exc Elast | $44K | 4.13% | 22.91% | $2K |
| 5402451000 | Nyl Clrd Multiflt,Untwt/Twt Lt 5 Trn/M, Exc Elast | $5K | 10.57% | 86.46% | $576 |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
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.
Exports · July 2026
destination
Belgium and Mexico together take 75% of it.
customs district
origin
entry
rate provision · imports
39.9% enters free of duty; the effective duty rate is 9.94%.