U.S. imports of Silk Waste (HS 500300) totaled $4K in August 2026, imported from 9 countries.
Silk Waste imports of $4K in August 2026 ran 90% below the year-to-date monthly average of $41K.
Last updated: August 2026 dataSilk waste encompasses a range of byproduct forms — cocoons unsuitable for reeling, yarn waste, and garnetted stock — each representing a different stage of processing failure or trim loss in the silk production chain. China and Italy are the leading suppliers to the US market, consistent with their roles as the world's largest silk producer and a major luxury textile manufacturer, respectively. The US schedule divides the heading into uncarded or uncombed waste (5003001000) and other silk waste (5003009000), with the carding and combing distinction signaling how far the material has been prepared for spinning into spun silk yarn.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
6 import shipments a month
Silk waste that has not been carded or combed — meaning it has not been mechanically aligned into a fiber web or sliver — is classified under 5003001000. Waste that has undergone carding or combing falls under 5003009000. Importers should obtain processing declarations from their supplier confirming whether any fiber preparation steps were performed prior to export.
Yes. Cocoons that are pierced (where the moth has emerged), double (two larvae in one cocoon), or otherwise unsuitable for continuous filament reeling are properly classified as silk waste under HTS 500300 rather than as silkworm cocoons suitable for reeling (HTS 500100). The commercial grade assessment and any quality certificates from the exporter should document the unsuitability for reeling.
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 |
|---|---|---|---|---|---|
| 5003009000 | Silk Waste, Other | $4K | 15.70% | 81.07% | $657 |
| 5003001000 | Silk Waste, Not Carded or Combed | — | -- | -- | -- |
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ImportsExports
Imports
$4KYoY · free account
Exports
—YoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $356K of Silk Waste and exported $75K.
Fewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through August 2026 · exports 3 of 12 months reported. Source: U.S. Census Bureau.
Subheading 1 of 1 in heading 5003
Subheading 500300 · $4K of $4K
Imports · August 2026
origin
United Kingdom and Canada together supply 92% of it. China pays 40.0% duty; United Kingdom 12.5%.
customs district
destination
entry
rate provision · imports
18.9% enters free of duty; duty collected equals 15.70% of imports for consumption.