Harmonized System
U.S. imports of Single Nylon & Polyamide Filament Yarn, Untwisted or Low-Twist (Non-Elastomeric) (HS 540245) totaled $1.7M in August 2026, imported from 19 countries.
Importers of Single Nylon & Polyamide Filament Yarn, Untwisted or Low-Twist (Non-Elastomeric) paid $143K in duties in August 2026, an average duty rate of 9.37% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 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.
54 import shipments a month
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.
Subheading 10 of 22 in heading 5402
Subheading 540245 · $1.7M of $62.2M
ImportsExports
Imports
$1.7MYoY · free account
Exports
$989KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $22.1M of Single Nylon & Polyamide Filament Yarn, Untwisted or Low-Twist (Non-Elastomeric) and exported $18.7M.
Through August 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 | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 5402459030 | Nyl Mono/Multiflt Untwt/Twt Yn N Lt 5 Trn/M, NESOI | $1.4M | 9.48% | 34.28% | $136K |
| 5402459040 | Nylon Multiflmnt Yrn Tws Gt=5 Lt=50 Trn/M, NESOI | $84K | 7.84% | 62.68% | $7K |
| 5402451000 | Nyl Clrd Multiflt, Untwt/Twt Lt 5 Trn/M, Exc Elast | $3K | 0.00% | 0.00% | -- |
| 5402459010 | Nyl Multiflt, Untwt/Twt Yn Nt Lt 5 Trn/M, Exc Elast | — | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5402450030 | Syn Fil Yn Exsew No Rt Sng, Mon, Mlt Untw/Tw Lt 5 N | $778K |
| 5402450010 | Syn Fil Yn Exsew No Rt Sng, Mlt Untw/Tw Lt 5 Tr/M N | $211K |
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.
Imports · August 2026
origin
Mexico and China together supply 69% of it. China pays 45.5% duty; Mexico 0.0%.
customs district
destination
entry
rate provision · imports
56.9% enters free of duty; duty collected equals 9.37% of imports for consumption.
Trade Directory
List your company under HS 540245 — Single Nylon & Polyamide Filament Yarn, Untwisted or Low-Twist (Non-Elastomeric), so the companies trading it can find you. Be the first supplier listed.