Product classification
HS code for Steel fasteners: 7318.19
Iron or steel, threaded screws, bolts and nuts n.e.c. in item no. 7318.1.
Classification of steel fasteners under HS 7318.19
Steel fasteners are classified under HS code 7318.19, which is situated within Chapter 73 of the Harmonized System, covering articles of iron or steel. Heading 7318 specifically addresses screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter-pins, washers, and similar articles. The classification logic is based on the presence of threading and the specific function of the fastener. Subheading 7318.19 is a residual category for threaded articles that are not specifically named in other subheadings like 7318.11 (coach screws) or 7318.15 (other screws and bolts). To be classified here, the product must be made of iron or non-stainless steel and feature mechanical threading designed to secure components together. The material composition is critical; if the fastener were made of stainless steel, it would still fall under 7318 but might require different sub-classification depending on the specific regional tariff schedule. The manufacturing process typically involves cold heading or machining, followed by thread rolling. This code is essential for customs as it distinguishes general-purpose fasteners from specialized automotive or aerospace components that might fall under different chapters.
- Covers
- Threaded screws and bolts not elsewhere specified
- Threaded nuts of iron or non-alloy steel
- Threaded lag screws and self-tapping screws
- Threaded studs and threaded rods
- Machine screws and wood screws
- Also under 7318.19
- AccuGroup set screws
- Fastenal threaded rods
- Würth security screws
- Böllhoff special studs
Codes often confused with 7318.19
Common mistake. Confusion often arises between 7318.19 and 7318.15. While 7318.15 covers specific types of screws and bolts, 7318.19 acts as the "other" category for threaded fasteners that do not fit the precise definitions of the preceding subheadings. Importers often mistakenly use 7318.15 for all bolts, but if the bolt has unique features or is part of a specialized assembly not covered by 7318.15, 7318.19 is the correct legal classification. Additionally, non-threaded fasteners like rivets or washers must be classified under 7318.21 through 7318.29, and stainless steel variants often require 7318.15 or 7318.16 depending on the specific item.
Top exporters and importers of HS 731819 (the code used for steel fasteners), 2025
In 2025, the largest exporter of HS 731819 (the code used for steel fasteners) in UN Comtrade data was China, with 26% of world exports; the largest importer in UN Comtrade data was Germany, with 9.1% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 731819, not only steel fasteners.
Top exporters 2025 · share of world exports
- 1 China $1.0B 26% of world exports
- 2 Germany $620M 16% of world exports
- 3 United States $307M 7.9% of world exports
World total: $3.9B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Germany $334M 9.1% of world imports
- 2 France $195M 5.3% of world imports
- 3 Italy $170M 4.6% of world imports
World total: $3.7B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for steel fasteners
Brazil classifies steel fasteners under NCM 7318.19.00: HS 7318.19 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
EU Regulatory Requirements
This product falls under the Carbon Border Adjustment Mechanism (CBAM). Importers to the EU must declare embedded carbon emissions and purchase CBAM certificates.
Questions about steel fasteners
What is the HS code for Steel fasteners?
The HS code for Steel fasteners is 731819 (Iron or steel; threaded screws, bolts and nuts n.e.c. in item no. 7318.1). The HS code for threaded steel fasteners not elsewhere specified is 7318.19.
How do I classify Steel fasteners for customs?
Steel fasteners is classified under HS code 731819 — Iron or steel; threaded screws, bolts and nuts n.e.c. in item no. 7318.1. This is a 6-digit subheading level code.
Does this code include stainless steel fasteners?
While 7318 covers all steel fasteners, 7318.19 is generally for iron or non-alloy steel; stainless steel fasteners are often specifically categorized under 7318.15 or 7318.16 depending on the item type.
Which countries are the top exporters of steel fasteners (HS 731819)?
In 2025, the top exporters of HS 731819 (the code used for steel fasteners) in UN Comtrade data were China ($1.0B, 26% of world exports), Germany ($620M) and the United States ($307M). World exports came to about $3.9B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of steel fasteners (HS 731819)?
In 2025, the top importers of HS 731819 (the code used for steel fasteners) in UN Comtrade data were Germany ($334M, 9.1% of world imports), France ($195M) and Italy ($170M). World imports came to about $3.7B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Steel fasteners the same in all countries?
The base HS code 731819 for Steel fasteners is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for steel fasteners in Brazil?
In Brazil, steel fasteners (HS 731819) is classified under NCM 7318.19.00.