Product classification
HS code for Screw hooks: 7318.13
Iron or steel, threaded screw hooks and screw rings.
Classification of screw hooks under HS 7318.13
Screw hooks are classified under HS code 7318.13, which falls within Chapter 73 of the Harmonized System, covering articles of iron or steel. Specifically, heading 7318 encompasses screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter-pins, washers, and similar articles. The classification is determined by the presence of threads and the specific functional design of the item as a hook or ring. These items are typically used for hanging objects or as fastening points in wood or masonry. The General Rules for the Interpretation (GRI) of the Harmonized System dictate that products are classified according to the terms of the headings and any relative section or chapter notes. Since 7318.13 explicitly mentions "threaded screw hooks and screw rings," it is the most specific and appropriate classification for these products. The material composition (iron or steel) is a primary factor, as similar items made of other base metals would be classified under different chapters, such as Chapter 74 for copper or Chapter 76 for aluminum. The threads must be present for this specific code; non-threaded hooks would fall under different headings such as 7326 for other articles of iron or steel.
- Covers
- L-shaped screw hooks
- Cup hooks
- Eye hooks (threaded)
- Screw rings
- Square bend screw hooks
- Ceiling hooks with threaded ends
- Also under 7318.13
- Hillman Group screw hooks
- Stanley screw eyes
- Everbilt cup hooks
- National Hardware screw hooks
Codes often confused with 7318.13
Common mistake. Screw hooks are frequently confused with wood screws under HS code 7318.12. While both are threaded and used in wood, 7318.12 is reserved for standard wood screws without the hook or ring feature. Another common error is classifying them under HS code 8302, which covers base metal mountings and fittings. However, because screw hooks are specifically named in heading 7318, that heading takes precedence according to GRI 1. Additionally, if the hook is not threaded (e.g., a drive hook), it should be classified under 7317.00 as a nail or 7326.90 as an article of steel.
Top exporters and importers of HS 731813 (the code used for screw hooks), 2025
In 2025, the largest exporter of HS 731813 (the code used for screw hooks) in UN Comtrade data was Germany, with 25% of world exports; the largest importer in UN Comtrade data was Germany, with 16% 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 731813, not only screw hooks.
Top exporters 2025 · share of world exports
- 1 Germany $44M 25% of world exports
- 2 China $41M 24% of world exports
- 3 Italy $11M 6.5% of world exports
World total: $175M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Germany $35M 16% of world imports
- 2 United States $17M 7.6% of world imports
- 3 Poland $11M 5.0% of world imports
World total: $227M 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 screw hooks
Brazil classifies screw hooks under NCM 7318.13.00: HS 7318.13 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 screw hooks
What is the HS code for Screw hooks?
The HS code for Screw hooks is 731813 (Iron or steel; threaded screw hooks and screw rings). The HS code for threaded screw hooks and screw rings made of iron or steel is 7318.13.
How do I classify Screw hooks for customs?
Screw hooks is classified under HS code 731813 — Iron or steel; threaded screw hooks and screw rings. This is a 6-digit subheading level code.
Does this code include hooks made of brass?
No, hooks made of brass or other copper alloys are classified under Chapter 74, specifically HS code 7415.39, which covers other threaded articles of copper.
Which countries are the top exporters of screw hooks (HS 731813)?
In 2025, the top exporters of HS 731813 (the code used for screw hooks) in UN Comtrade data were Germany ($44M, 25% of world exports), China ($41M) and Italy ($11M). World exports came to about $175M, 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 screw hooks (HS 731813)?
In 2025, the top importers of HS 731813 (the code used for screw hooks) in UN Comtrade data were Germany ($35M, 16% of world imports), the United States ($17M) and Poland ($11M). World imports came to about $227M, 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 Screw hooks the same in all countries?
The base HS code 731813 for Screw hooks 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 screw hooks in Brazil?
In Brazil, screw hooks (HS 731813) is classified under NCM 7318.13.00.