3506.91—Adhesives based on polymers of headings 3901 to 3913 or on rubberGeneral duty rate
Free – 2.1%
Across 2 10-digit lines; pick a line below for the exact rate
Coverage on this page
HTS 3506.91 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Adhesives based on polymers of headings 3901 to 3913 or on rubber. It sits in Chapter 35: Albuminoidal substances; modified starches; glues; enzymes, Section VI: Products of the Chemical or Allied Industries and rolls up 2 10-digit statistical lines, with general duty rates ranging from Free to 2.1%. 6 Chapter 99 tariff modifications currently touch one or more lines under this subheading.
Pick a line to view full rate detail and compute landed duty
Chapter 99 overlays touching one or more lines under 3506.91
| Code | Authority | Rate |
|---|---|---|
| 9903.81.91 | section_232 | The duty provided in the applicable subheading + a duty of 50% upon the value of the steel content. |
| 9903.81.92 | section_232 | The duty provided in the applicable subheading. |
| 9903.81.98 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.80.03 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.84 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.86 | section_232 | The duty provided in the applicable subheading + 25% |
HTS 3506.91 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Adhesives based on polymers of headings 3901 to 3913 or on rubber. It belongs to Chapter 35 and rolls up 2 10-digit statistical lines that brokers actually file at entry.
General (Column 1) duty rates for the 10-digit lines under HTS 3506.91 range from Free to 2.1%. The exact rate depends on the specific 10-digit statistical line — pick a line below to see its full rate detail.
U.S. Customs requires entries to be filed at the 10-digit statistical level — the broader subheading HTS 3506.91 is not directly fileable. Match your product description to the most specific 10-digit line in the list on this page; if multiple lines could apply, the General Rules of Interpretation (GRIs) and chapter notes determine which one governs.
No active AD/CVD (antidumping or countervailing duty) orders currently flag any line under HTS 3506.91 in Tandom's catalog. Tandom monitors Federal Register notices daily; any new orders will appear here within 24h of 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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A working guide to the inputs, the layers, and the math behind a US entry summary in 2026. Written for brokers, forwarders, and importer compliance teams.
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What changed April 6, 2026, what stayed the same, and how to file a steel, aluminum, or copper line in ACE without leaving duty exposure on the table.
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Drop the Tandom Duty Calculator API into a TMS, broker software, or in-house ERP. Code samples, the response shape, and ACE reporting order, in 2026.
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Where trade compliance APIs fit in a broker's filing pipeline: HTS classification, duty calculation, AD/CVD scope match, and post-summary corrections.
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