U.S. imports of Silk Yarn (Not Spun from Waste, Not for Retail Sale) (HS 500400) totaled $907K in August 2026, imported from 20 countries.
Importers of Silk Yarn (Not Spun from Waste, Not for Retail Sale) paid $236K in duties in August 2026, an average duty rate of 26.06% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataThrown silk yarn reeled from intact cocoons — as opposed to yarn spun from waste fiber — and packed in bulk or industrial form rather than retail quantities is the product covered here. China dominates global silk yarn production and leads US imports under this heading; Italy and Switzerland are also significant sources, supplying premium-grade thrown silk to the US luxury textile and weaving industries. The single US tariff line (5004000000) covers all deniers and twist levels of this yarn type, so denier, twist direction (S or Z), and number of plies are commercial specification points rather than classification variables.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
66 import shipments a month
HTS 500400 covers yarn produced by throwing (twisting and plying) continuous filaments reeled directly from intact silkworm cocoons. HTS 500500 covers yarn produced by a spinning process from short-staple silk waste fibers. The raw material input — continuous filament vs. short staple waste — is the defining distinction, and suppliers should specify the fiber source on commercial invoices.
Yes. Yarn 'not put up for retail sale' must be in bulk industrial form — typically on cones, bobbins, or in hanks without consumer-facing labeling or packaging. If the same yarn is packaged in small quantities with retail labels for end-consumer sale, it would fall outside HTS 500400 and require reclassification. CBP may examine packaging and labeling at entry to verify the retail-sale condition.
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 |
|---|---|---|---|---|---|
| 5004000000 | Silk Yarn not Put Up for Retail Sale | $907K | 26.06% | 82.80% | $236K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5004000000 | Silk Yarn not Put Up for Retail Sale | $7K |
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
$907KYoY · free account
Exports
$7KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $11.8M of Silk Yarn (Not Spun from Waste, Not for Retail Sale) and exported $124K.
Through August 2026 · exports 9 of 12 months reported. Source: U.S. Census Bureau.
Subheading 1 of 1 in heading 5004
Subheading 500400 · $907K of $907K
Trade Directory
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Imports · August 2026
origin
China and Switzerland together supply 82% of it. China pays 37.5% duty; Switzerland 0.0%.
customs district
destination
entry
rate provision · imports
17.2% enters free of duty; duty collected equals 26.06% of imports for consumption.