7307.21—FlangesGeneral duty rate
3.3% – 5.6%
Across 2 10-digit lines; pick a line below for the exact rate
Coverage on this page
Up one level: 7307 — Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel: (heading)
HTS 7307.21 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Flanges. It sits in Chapter 73: Articles of iron or steel, Section XV: Base Metals and Articles of Base Metal and rolls up 2 10-digit statistical lines, with general duty rates ranging from 3.3% to 5.6%. 11 Chapter 99 flags link to one or more child lines (3 active, 8 expired), and 6 potentially relevant AD/CVD order flags link to at least one child line.
Pick a line to view its exact rate and estimate duties and customs fees
Provisions linked to one or more lines under 7307.21; applicability depends on origin, product facts, claims, and entry date
| Code | Authority | Rate |
|---|---|---|
| 9903.82.02 | section_232Active | 50% |
| 9903.82.04 | section_232Active | 25% |
| 9903.82.15 | section_232Active | 10% |
| 9903.81.90 | section_232Expired | The duty provided in the applicable subheading + 50%. |
| 9903.81.92 | section_232Expired | The duty provided in the applicable subheading. |
| 9903.81.97 | section_232Expired | The duty provided in the applicable subheading + 25% |
| 9903.80.03 | section_232Expired | The duty provided in the applicable subheading + 25% |
| 9903.81.99 | section_232Expired | The duty provided in the applicable subheading + 25% |
| 9903.81.86 | section_232Expired | The duty provided in the applicable subheading + 25% |
| 9903.81.93 | section_232Expired | The duty provided in the applicable subheading + 50%. |
| 9903.81.84 | section_232Expired | The duty provided in the applicable subheading + 25% |
HTS-linked orders for one or more lines under 7307.21; written scope controls whether a product is covered
HTS 7307.21 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Flanges. It belongs to Chapter 73 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 7307.21 range from 3.3% to 5.6%. The exact rate depends on the specific 10-digit statistical line — pick a line below to see its full rate detail.
Tandom links section_232 provision 9903.82.02 to HTS 7307.21. Its published rate notation is 50%, and its status on 2026-09-26 is active. 10 additional Chapter 99 flags also link to this code. A flag is not a shipment-level determination; check origin, product facts, claims, and entry date.
U.S. Customs requires entries to be filed at the 10-digit statistical level — the broader subheading HTS 7307.21 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.
Tandom links 6 potentially relevant AD/CVD order flags to at least one 10-digit line under HTS 7307.21. An HTS link is a screening aid; whether a shipment is covered depends on the order's written product scope and country of origin. Use the linked lookup to review the case materials.
Tandom guides relevant to this code
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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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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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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How to subscribe to CBP Cargo Systems Messaging Service and triage the messages that change broker filing behavior, without losing the ones that matter.
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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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