HS code · 6-digit subheading
HS Code 7318.22 – Iron or steel; non-threaded washers, excluding spring and lock
HS code 7318.22 is the 6-digit subheading for iron or steel, non-threaded washers, excluding spring and lock. It is used for flat washers, fender washers, structural washers, finishing washers and sealing washers.
What HS 7318.22 covers
This HS code encompasses a broad range of non-threaded washers made from iron or steel, excluding those specifically designed as spring or lock washers (which fall under 731821). These general-purpose washers serve various crucial functions in mechanical assemblies, such as distributing the load of a fastener over a wider area, acting as a spacer to maintain distance between components, preventing galvanic corrosion between dissimilar metals, or providing a smooth bearing surface for rotating parts. They are ubiquitous in almost every industry, from furniture assembly and electronics to heavy machinery and construction. International trade is robust, with importers including manufacturers across diverse sectors, hardware wholesalers, and MRO distributors. Exporters are typically large-scale industrial component manufacturers capable of high-volume production. Key aspects for trade involve material specifications (e.g., plain carbon steel, stainless steel), precise dimensions (inner/outer diameter, thickness), finish (e.g., plain, zinc plated, black oxide), and adherence to international standards like DIN, ISO, and ANSI, which are crucial for ensuring compatibility and performance in global supply chains.
- Covers
- Flat washers
- Fender washers
- Structural washers
- Finishing washers
- Sealing washers
- Shim washers
- Square washers
- Examples
- Fastenal flat washers
- Würth plain washers
- Böllhoff structural washers
- ITW Buildex fender washers
Codes often confused with 7318.22
Common mistake. This code is for general non-threaded washers and is often confused with 731821 (spring/lock washers) if the specific function of the washer is not clearly defined.
Top exporters and importers of HS code 731822, 2025
In 2025, the largest exporter of HS code 731822 in UN Comtrade data was China, with 25% of world exports; the largest importer in UN Comtrade data was the United States, with 10% 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 $616M 25% of world exports
- 2 United States $336M 14% of world exports
- 3 Germany $328M 13% of world exports
World total: $2.4B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $284M 10% of world imports
- 2 China $256M 9.1% of world imports
- 3 Germany $223M 8.0% of world imports
World total: $2.8B 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 7318.22
Brazil does not split HS 7318.22: its NCM code is 7318.22.00.
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 7318.22
What is HS code 731822?
HS code 731822 is a 6-digit subheading in the Harmonized System that covers: Iron or steel; non-threaded washers, excluding spring and lock. This HS code encompasses a broad range of non-threaded washers made from iron or steel, excluding those specifically designed as spring or lock washers (which fall under 731821). These general-purpose washers serve various crucial functions in mechanical assemblies, such as distributing the load of a fastener over a wider area, acting as a spacer to maintain distance between components, preventing galvanic corrosion between dissimilar metals, or providing a smooth bearing surface for rotating parts. They are ubiquitous in almost every industry, from furniture assembly and electronics to heavy machinery and construction. International trade is robust, with importers including manufacturers across diverse sectors, hardware wholesalers, and MRO distributors. Exporters are typically large-scale industrial component manufacturers capable of high-volume production. Key aspects for trade involve material specifications (e.g., plain carbon steel, stainless steel), precise dimensions (inner/outer diameter, thickness), finish (e.g., plain, zinc plated, black oxide), and adherence to international standards like DIN, ISO, and ANSI, which are crucial for ensuring compatibility and performance in global supply chains.
What products fall under HS code 731822?
Flat washers, fender washers, structural washers, finishing washers, sealing washers, shim washers, square washers
What are common misclassifications for HS code 731822?
This code is for general non-threaded washers and is often confused with 731821 (spring/lock washers) if the specific function of the washer is not clearly defined.
Which countries are the top exporters of goods under HS code 731822?
In 2025, the top exporters of HS code 731822 in UN Comtrade data were China ($616M, 25% of world exports), the United States ($336M) and Germany ($328M). World exports came to about $2.4B, 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 731822?
In 2025, the top importers of HS code 731822 in UN Comtrade data were the United States ($284M, 10% of world imports), China ($256M) and Germany ($223M). World imports came to about $2.8B, 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 731822 structured?
HS code 731822 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 (22) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 731822?
In Brazil, HS code 731822 is NCM 7318.22.00. The last two digits are 00 because Brazil does not split this HS code further.