7318.15.50—Studs
General duty rate
Free
Across 4 10-digit lines
Coverage on this page
Up one level: 7318.15 — Other screws and bolts, whether or not with their nuts or washers: (subheading)
Plain-English explanation
HTS 7318.15.50 is an 8-digit tariff item of the U.S. Harmonized Tariff Schedule covering Studs. It sits in Chapter 73: Articles of iron or steel, Section XV: Base Metals and Articles of Base Metal and rolls up 4 10-digit statistical lines, all with a general duty rate of Free. 9 Chapter 99 tariff modifications currently touch one or more lines under this tariff item, and 11 AD/CVD orders flag at least one child line.
10-digit lines under 7318.15.50(4)
Pick a line to view full rate detail and compute landed duty
Tariff modifications(9)
Chapter 99 overlays touching one or more lines under 7318.15.50
| Code | Authority | Rate |
|---|---|---|
| 9903.82.02 | section_232 | 50% |
| 9903.81.90 | section_232 | The duty provided in the applicable subheading + 50%. |
| 9903.81.92 | section_232 | The duty provided in the applicable subheading. |
| 9903.81.97 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.80.03 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.99 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.93 | section_232 | The duty provided in the applicable subheading + 50%. |
| 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% |
AD/CVD orders(11)
Antidumping or countervailing orders covering one or more lines under 7318.15.50
C-523-817CVDOmanSteel NailsC-489-847CVDTürkiyeSteel NailsC-533-905CVDIndiaSteel NailsA-549-840ADThailandCarbon and Alloy Steel Threaded RodA-533-887ADIndiaCarbon and Alloy Steel Threaded RodC-533-888CVDIndiaCarbon and Alloy Steel Threaded RodC-542-805CVDSri LankaSteel NailsA-583-865ADTaiwanCarbon and Alloy Steel Threaded RodA-570-104ADChinaAlloy and Certain Carbon Steel Threaded RodC-570-105CVDChinaAlloy and Certain Carbon Steel Threaded RodA-533-855ADIndiaCertain Corrosion-Resistant Steel Products from IndiaFrequently asked questions
What does HTS 7318.15.50 cover?
HTS 7318.15.50 is an 8-digit tariff item of the U.S. Harmonized Tariff Schedule covering Studs. It belongs to Chapter 73 and rolls up 4 10-digit statistical lines that brokers actually file at entry.
What is the duty rate for HTS 7318.15.50?
Every 10-digit line under HTS 7318.15.50 carries a general (Column 1) duty rate of Free. Section 301, Section 232, and AD/CVD overlays may stack on top of this rate at the per-line level — open a specific 10-digit code to see its complete tariff stack.
How do I find the right 10-digit line under HTS 7318.15.50?
U.S. Customs requires entries to be filed at the 10-digit statistical level — the broader tariff item HTS 7318.15.50 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.
Are there AD/CVD orders affecting HTS 7318.15.50?
Yes — 11 AD/CVD orders flag at least one 10-digit line under HTS 7318.15.50. Whether a specific shipment falls in scope depends on the country of origin and the order's scope determination. See compliance.tandom.ai for full coverage detail.
Learn more
Tandom guides relevant to this code
Trade compliance APIs in broker workflows
Where trade compliance APIs fit in a broker's filing pipeline: HTS classification, duty calculation, AD/CVD scope match, and post-summary corrections.
Open resource
Wire the Tandom Duty Calculator API into a TMS or broker software
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.
Open resource
Check AD/CVD exposure by HTS code
A practical workflow for checking antidumping and countervailing duty exposure on a US entry. For brokers and ops teams who need the answer before filing.
Open resource
Section 232 steel, aluminum, and copper duties in 2026
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.
Open resource
Expose the Tandom AD/CVD lookup as a Claude MCP tool
Wire the Tandom AD/CVD lookup into Claude as a Model Context Protocol tool. Real JSON-RPC traces, the tool list, and a worked example, in 2026.
Open resource
Subscribe to and triage CBP CSMS messages
How to subscribe to CBP Cargo Systems Messaging Service and triage the messages that change broker filing behavior, without losing the ones that matter.
Open resource