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HSChapter 55
U.S. exports of synthetic staple fibers of nylon or other polyamides (except aramids), not carded or combed (HS 550319) totaled $4.9M in July 2026.
Importers of Synthetic Staple Fibers of Nylon or Other Polyamides (Except Aramids), Not Carded or Combed paid $99K in duties in July 2026 — an effective duty rate of 12% on $827K in dutiable value, based on actual customs collections rather than the published tariff schedule. Synthetic Staple Fibers of Nylon or Other Polyamides (Except Aramids), Not Carded or Combed imports of $810K in July 2026 ran 15% above the year-to-date monthly average of $702K.
Last updated: July 2026 dataNylon and non-aramid polyamide staple fibers in unprocessed form are widely used in carpet yarn, apparel blends, and technical textiles, with the US schedule subdividing them by nylon 12 content thresholds at the 10-digit level. Line 5503191000 captures fibers containing more than 10% nylon 12, while 5503199000 covers other non-aramid polyamide staple fibers; a third line (5503190000) serves as a general catch-all. Germany leads US imports under this heading, followed by Switzerland and Canada.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
40 shipments/mo
Nylon 12 (polyamide 12) has distinct chemical and mechanical properties — including lower moisture absorption and higher chemical resistance — compared to nylon 6 or nylon 6,6. The US tariff schedule uses a 10% nylon 12 content threshold to separate specialty high-nylon-12 fibers (5503191000) from standard polyamide staple fibers (5503199000). Importers should obtain a fiber composition certificate from the manufacturer to determine which 10-digit line applies.
Canada is a USMCA partner, and qualifying goods of Canadian origin may be eligible for preferential tariff treatment provided the fiber meets the applicable textile rules of origin under USMCA. Given that Canada ranks among the top three suppliers under this heading, importers should work with a licensed customs broker to confirm USMCA eligibility and obtain the necessary origin certification.
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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 |
|---|---|---|---|---|---|
| 5503199000 | Syn Stp Fib Nt Prsd Spng:oth Lt 10% Ny 12, Exc Ara | $810K | 12.27% | 102.19% | $99K |
| 5503191000 | Syn Stp Fib Nt Cd,Prsd Spng:con Gt10% Nyl 12,NESOI | $0 | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5503190000 | Syn Stp Fib Nt Crd, Nyl/ Ot Plym, Not of Aramids | $4.9M |
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
$810KYoY · Pro
Exports
$4.9MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Exports · July 2026
destination
Mexico and Netherlands together take 49% of it.
customs district
origin
entry
rate provision · imports
the effective duty rate is 12.27%.