U.S. exports of Threaded Articles of Iron or Steel (NESOI) (HS 731819) totaled $27.7M in August 2026.
Importers of Threaded Articles of Iron or Steel (NESOI) paid $6.6M in duties in August 2026, an average duty rate of 58.78% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataClassified under a single 10-digit line (7318190000), this residual heading captures threaded iron or steel articles that do not fit the more specific fastener categories — such as threaded inserts, threaded couplings, and other engineered threaded components used in industrial and mechanical assemblies. China is the leading supplier, followed by Germany, Taiwan, the United Kingdom, and India, reflecting a supply base that spans both high-volume commodity production and precision-engineered specialty parts. Because this is a catch-all classification, CBP may challenge the heading if a product more specifically fits a named fastener category, making pre-import classification review particularly valuable.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
1.6K import shipments a month
Products commonly classified here include threaded inserts (e.g., helical coil inserts, press-fit inserts), threaded pipe couplings of iron or steel not covered by Chapter 73 pipe fittings headings, and other engineered threaded components that lack a dedicated HTS line. The key test is that the article must be threaded and of iron or steel, and must not be more specifically described by another heading in Chapter 73.
If CBP questions whether an article belongs in a named fastener heading (e.g., screws or bolts under 731815) rather than the residual 731819, the importer should provide technical drawings, product specifications, and end-use documentation demonstrating that the article does not meet the definition of any specifically named fastener type. A binding ruling request to CBP before importation is the most reliable way to resolve classification uncertainty for novel or complex threaded components.
Subheading 5 of 12 in heading 7318
Subheading 731819 · $27.7M of $543.4M
Trade Directory
List your company under HS 731819 — Threaded Articles of Iron or Steel (NESOI), so the companies trading it can find you. Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 7318190000 | Threaded Articles of Iron or Steel, NESOI | $11.2M | 58.78% | 97.67% | $6.6M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7318190000 | Threaded Articles of Iron or Steel, NESOI | $27.7M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$11.3MYoY · free account
Exports
$27.7MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $141.8M of Threaded Articles of Iron or Steel (NESOI) and exported $324.4M.
Through August 2026. Source: U.S. Census Bureau.
Exports · August 2026
destination
Mexico and Canada together take 40% of it.
customs district
origin
entry
rate provision · imports
2.3% enters free of duty; duty collected equals 58.78% of imports for consumption.