HS code · 6-digit subheading
HS Code 7318.24 – Iron or steel; non-threaded cotters and cotter-pins
HS code 7318.24 is the 6-digit subheading for iron or steel, non-threaded cotters and cotter-pins. It is used for split cotter pins, R-clips (hairpin cotters), clevis pins (with cotter holes), spring cotters and taper cotters.
What HS 7318.24 covers
This HS code specifically covers non-threaded cotters and cotter-pins made from iron or steel, which are simple yet essential mechanical fasteners. Cotter pins are typically used to secure the position of other fasteners, such as clevis pins or castellated nuts, preventing them from loosening or falling out due to vibration or movement. Cotters, often wedge-shaped, are used to secure components on shafts or in other mechanical assemblies, preventing axial movement. These items are crucial in applications requiring quick assembly/disassembly, safety locking, or preventing rotational movement, found extensively in agricultural machinery, automotive systems, industrial equipment, and general hardware. International trade involves manufacturers of machinery, automotive parts suppliers, and hardware distributors as importers, seeking reliable and cost-effective securing solutions. Exporters are specialized fastener and component manufacturers, often producing these items in high volumes. Key aspects for trade include material (e.g., mild steel, stainless steel), size, shape (e.g., split cotter, R-clip), and compliance with relevant industrial standards, ensuring reliability in critical applications.
- Covers
- Split cotter pins
- R-clips (hairpin cotters)
- Clevis pins (with cotter holes)
- Spring cotters
- Taper cotters
- Gib-head cotters
- Linch pins
- Examples
- Fastenal cotter pins
- Würth R-clips
- John Deere clevis pins (using cotters)
- Kubota linch pins
Codes often confused with 7318.24
Common mistake. Can be confused with other non-threaded pins or even small bolts, but 731824 is specifically for cotters and cotter-pins used for securing other components.
Top exporters and importers of HS code 731824, 2025
In 2025, the largest exporter of HS code 731824 in UN Comtrade data was China, with 31% of world exports; the largest importer in UN Comtrade data was China, with 18% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 China $339M 31% of world exports
- 2 United States $224M 20% of world exports
- 3 Germany $91M 8.3% of world exports
World total: $1.1B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 China $216M 18% of world imports
- 2 Mexico $118M 9.8% of world imports
- 3 Thailand $84M 7.0% of world imports
World total: $1.2B 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 7318.24
Brazil does not split HS 7318.24: its NCM code is 7318.24.00.
All Brazil NCM codes in heading 73.18 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
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 HS 7318.24
What is HS code 731824?
HS code 731824 is a 6-digit subheading in the Harmonized System that covers: Iron or steel; non-threaded cotters and cotter-pins. This HS code specifically covers non-threaded cotters and cotter-pins made from iron or steel, which are simple yet essential mechanical fasteners. Cotter pins are typically used to secure the position of other fasteners, such as clevis pins or castellated nuts, preventing them from loosening or falling out due to vibration or movement. Cotters, often wedge-shaped, are used to secure components on shafts or in other mechanical assemblies, preventing axial movement. These items are crucial in applications requiring quick assembly/disassembly, safety locking, or preventing rotational movement, found extensively in agricultural machinery, automotive systems, industrial equipment, and general hardware. International trade involves manufacturers of machinery, automotive parts suppliers, and hardware distributors as importers, seeking reliable and cost-effective securing solutions. Exporters are specialized fastener and component manufacturers, often producing these items in high volumes. Key aspects for trade include material (e.g., mild steel, stainless steel), size, shape (e.g., split cotter, R-clip), and compliance with relevant industrial standards, ensuring reliability in critical applications.
What products fall under HS code 731824?
Split cotter pins, R-clips (hairpin cotters), clevis pins (with cotter holes), spring cotters, taper cotters, gib-head cotters, linch pins
What are common misclassifications for HS code 731824?
Can be confused with other non-threaded pins or even small bolts, but 731824 is specifically for cotters and cotter-pins used for securing other components.
Which countries are the top exporters of goods under HS code 731824?
In 2025, the top exporters of HS code 731824 in UN Comtrade data were China ($339M, 31% of world exports), the United States ($224M) and Germany ($91M). World exports came to about $1.1B, 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 goods under HS code 731824?
In 2025, the top importers of HS code 731824 in UN Comtrade data were China ($216M, 18% of world imports), Mexico ($118M) and Thailand ($84M). World imports came to about $1.2B, 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.
How is HS code 731824 structured?
HS code 731824 is a 6-digit subheading under the Harmonized System. The first 2 digits (73) identify the chapter, digits 3-4 (18) identify the heading, and digits 5-6 (24) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 731824?
In Brazil, HS code 731824 is NCM 7318.24.00. The last two digits are 00 because Brazil does not split this HS code further.