What is HS code 731821 used for?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
HS-6 · Subheading
731821
Iron or steel; non-threaded spring washers and other lock washers
Heading 7318 — Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel
Chapter 73: Articles of iron or steel
Plain-language overview
Use HS-6 731821 when importing or exporting non-threaded spring washers and other lock washers made from iron or steel. For example, if you are shipping a batch of flat spring washers used in automotive assembly, this is the correct code.
This code specifically covers non-threaded spring washers, which are designed to provide tension and prevent loosening in mechanical assemblies. In contrast, HS-6 731822 covers threaded spring washers, which are used in different applications requiring a screw thread.
When dealing with HS-6 731821, you’ll find items like flat lock washers, wave washers, and other similar products that do not have threads. These components are essential in various machinery and construction applications.
If you're unsure whether to classify your product under this code or HS-6 731829 (other washers), consider the specific design and application of your washers. Non-threaded spring washers are typically used to secure components without threading.
Keywords & topics
Useful terms traders and brokers use for this HS-6 subheading.
non-threaded spring washers · lock washers · iron washers · steel washers · automotive spring washers · industrial washers · mechanical assembly washers · flat lock washers · wave washers · construction washers · bicycle assembly washers · HVAC system washers · plumbing lock washers · furniture assembly washers · household appliance washers · electronic device washers
Examples
Drawn from the official tariff wording for this HS-6 subheading. Always confirm against your published schedule and legal notes.
- Flat spring washers for automotive engines
- Wave washers used in electronic devices
- Lock washers for construction machinery
- Non-threaded washers in bicycle assembly
- Spring washers for household appliances
- Industrial spring washers for HVAC systems
- Lock washers used in furniture assembly
- Non-threaded washers for plumbing fixtures
Common questions
Frequent classification questions with short practical guidance.
How to classify non-threaded spring washers?
Write down material, use, and product form first, then compare nearby lines before you lock the code.
Are lock washers covered under HS code 731821?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
What products fall under HS-6 731821?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
Differences between HS-6 731821 and 731822?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
What are examples of non-threaded spring washers?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
How to import non-threaded spring washers?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
What are the regulations for exporting lock washers?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
Related topics
Common real-world topics that come up during code comparison.
How to determine if my washers are non-threaded spring washers
Use this topic to narrow your shortlist, then validate the final code against legal wording.
Classification of lock washers under HS codes
Use this topic to narrow your shortlist, then validate the final code against legal wording.
What types of washers are included in HS-6 731821?
Use this topic to narrow your shortlist, then validate the final code against legal wording.
Guidelines for shipping non-threaded spring washers
Use this topic to narrow your shortlist, then validate the final code against legal wording.
Understanding the differences between spring washers and lock washers
Compare adjacent HS lines and pick the one that matches material, function, and product form most closely.
Best practices for importing iron or steel washers
Check the exact product specs and destination-country tariff notes before finalizing the code.
How to find the right HS code for my mechanical components
Use this topic to narrow your shortlist, then validate the final code against legal wording.
What to consider when classifying spring washers for export
Check the exact product specs and destination-country tariff notes before finalizing the code.
Questions & answers
For orientation only—the binding text is your national tariff and the WCO nomenclature your country uses.
- What types of washers are classified under HS-6 731821?
- HS-6 731821 includes non-threaded spring washers and other lock washers made of iron or steel, such as flat and wave washers.
- Can I use HS-6 731821 for threaded spring washers?
- No, threaded spring washers fall under HS-6 731822. Use 731821 only for non-threaded types.
- What is the difference between spring washers and lock washers?
- Spring washers are designed to provide tension, while lock washers are used to prevent loosening of fasteners. Both can be classified under HS-6 731821 if non-threaded.
- How do I know if my washers are non-threaded?
- Non-threaded washers do not have any screw threads and are typically flat or shaped to provide tension in assemblies.
- What documentation do I need for importing HS-6 731821 products?
- You will need a commercial invoice, packing list, and potentially a certificate of origin, depending on your destination country's requirements.
- Are there any restrictions on importing non-threaded spring washers?
- Generally, there are no specific restrictions, but always check with your customs broker for any import regulations specific to your country.
- What industries commonly use HS-6 731821 products?
- Industries such as automotive, construction, and electronics frequently use non-threaded spring washers in their products.
- How can I ensure accurate classification of my washers?
- Consult with a customs broker or use the official tariff schedule to verify the correct HS code based on your product's specifications.
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