Cocoons suitable for reeling (5001) have an intact, continuous filament that can be mechanically unwound to produce raw silk thread. Cocoons that are pierced (where the moth has emerged), double, or otherwise defective — and therefore cannot yield a continuous filament — are classified as silk waste under heading 5003, along with yarn waste and garnetted stock.
Yes. USDA APHIS has jurisdiction over silkworm cocoons as potential carriers of plant and animal pests. Importers should verify current APHIS permit requirements and any applicable restrictions before arranging shipment, as admissibility conditions can vary by origin country and processing status of the cocoons.
Heading 7 of 7 in chapter 50 · 1 product
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Imports · August 2026
origin
customs district
destination
None recorded for this period.
entry
None recorded for this period.
rate provision · imports
None recorded for this period.
ImportsExports
Imports
—YoY · free account
Exports
—YoY · free account
Low of 2 reported months · imports
Low · free accountFewer 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 · imports 2 of 12 months reported, exports 4 of 12 months reported. Source: U.S. Census Bureau.