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HSChapter 50
U.S. imports of silk yarn (not spun from waste, not for retail sale) (HS 500400) totaled $613K in April 2026, traded with 14 countries.
Importers of Silk Yarn (Not Spun from Waste, Not for Retail Sale) paid $178K in duties in April 2026 — an effective duty rate of 30% on $584K in dutiable value, based on actual customs collections rather than the published tariff schedule. Silk Yarn (Not Spun from Waste, Not for Retail Sale) imports of $613K in April 2026 ran 47% below the year-to-date monthly average of $1.2M.
Last updated: April 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.
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.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | $561K | $5K | -$556K |
| FRANCE | $37K | -- | -$37K |
| BELGIUM | $5K | $11K | +$6K |
| UNITED KINGDOM | $5K | -- | -$5K |
| ITALY | $4K | -- | -$4K |
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 |
|---|---|---|---|---|
| 5004000000 | SILK YARN NOT PUT UP FOR RETAIL SALE | $613K | 30.45% | $178K |
SILK YARN NOT PUT UP FOR RETAIL SALE
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5004000000 | SILK YARN NOT PUT UP FOR RETAIL SALE | $21K |
SILK YARN NOT PUT UP FOR RETAIL SALE
708 kg
WOV FAB OV 85% SILK OR SILK WASTE EXCEPT NOIL SLK
HS 500720
WOVEN FABRICS OF NOIL SILK
HS 500710
WOVEN FABRICS OF SILK OR SILK WASTE, NESOI
HS 500790
SILK YARN & YARN FROM WASTE RETAIL PK; SILKWM GUT
HS 500600
YARN SPUN FROM SILK WASTE NOT PUT UP RETAIL SALE
HS 500500
SILK WASTE
HS 500300
Supplier Network
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| State | Imports | Exports | Balance |
|---|---|---|---|
| Puerto Rico | $353K | -- | -$353K |
| New Jersey | $208K | -- | -$208K |
| New York | $37K | -- | -$37K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| SAN FRANCISCO INTERNATIONAL AIRPORT, CA | $353K | -- | -$353K |
| YSLETA, TX | $208K | -- | -$208K |
| NEWARK, NJ | $29K | -- | -$29K |