Tandom · Duty calculator
Add country and invoice value for the full duty stack — base + 301 + 232 + AD/CVD + fees.
HTS 1605.56.20.00 is the U.S. Harmonized Tariff Schedule classification for Clams, cockles and arkshells, other. It's a 10-digit statistical line in Chapter 16: Preparations of meat, fish, crustaceans, molluscs or other aquatic invertebrates, Section IV: Prepared Foodstuffs; Beverages, Spirits, Vinegar; Tobacco, used by U.S. Customs and Border Protection to determine the duty rate at entry. 2 Chapter 99 tariff modifications currently stack on top of the base rate.
New to HTS codes? Read our guide on how HTS classification works →
Chapter 99 overlays that stack on the base rate
| Code | Authority | Rate |
|---|---|---|
| 9903.88.70 | section_301 | The duty provided in the applicable subheading |
| 9903.89.10 | section_301 | The duty provided in the applicable subheading + 25% |
HTS 1605.56.20.00 is the U.S. Harmonized Tariff Schedule classification for Clams, cockles and arkshells, other. It belongs to Chapter 16 of the HTSUS.
The general (Column 1) duty rate for HTS 1605.56.20.00 is Free. This is the most-favored-nation (MFN) rate that applies to imports from World Trade Organization member countries.
The Column 2 rate for HTS 1605.56.20.00 is 35%. This rate applies to imports from countries that do not have normal trade relations with the United States (currently Cuba and North Korea).
Yes — HTS 1605.56.20.00 is covered by section_301 provision 9903.88.70 (The duty provided in the applicable subheading). 1 additional overlay also touch this code. Open the code page for the full overlay stack with effective dates and country scopes.
No active AD/CVD orders currently flag HTS 1605.56.20.00 in Tandom's catalog. Tandom monitors Federal Register notices daily; a flag will appear here within 24h of any new order's publication.
Tandom guides relevant to this code
How to read, order, and report Chapter 99 HTS codes alongside the base classification on a US entry summary in 2026. The full stacking ladder for brokers and compliance teams.
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