7318.21.00Spring washers and other lock washers
Also written 73182100
HTS Code 7318.21.00 covers any article best defined as Base Metals and Articles of Base MetalArticles of iron or steelScrews, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel:Non-threaded articles:Spring washers and other lock washers in the Harmonized Tariff Schedule — covering 2 sub-classifications.
As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from China pay 80.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%) and Section 301 – China (25%).
From China, the total duty on 7318.21.00 last changed on Apr 6, 2026, from 40.8% to 80.8%. It has changed 2 times since Nov 17, 2025.
Estimated Duty on 7318.21.00
$10,000.00 by ocean, entered Oct 26, 2026
- Total duty
- 80.8%
- $8,080.00 on this shipment
- Fees
- 0.47%
- MPF + HMF · $47.14
- Duty + fees
- 81.27%
- Payable to CBP
- Landed cost
- $18,127.14
- On $10,000.00 customs value
- Base duty5.8%
- Section 232 – Steel, Aluminum & Copper50%
- Section 301 – China25%
- Customs fees0.47%
Chapter 99 lines9903.82.02Section 232 Metals9903.88.03Section 301 China: List 3
4 exemptions could lower this
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Base Duty Rates for 7318.21.00
From the Harmonized Tariff Schedule
- General Rate of Duty
- 5.8%
- Special Rate of Duty
- Free / 2.9%
- AAUBBHCLCODEILJOKRMAOMPPAPESSGJP
- Column 2 (Non-NTR)
- 35%
- China80.8%
- Mexico55.8%
- Canada55.8%
- Vietnam55.8%
- Germany55.8%
US Import Duty on HTS 7318.21.00 by Country of Origin
As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from China pay 80.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%) and Section 301 – China (25%). Of the 20 largest sources of US imports, the lowest total is 55.8%, from Mexico, Canada and 17 more.
| Country of origin | Base rate | Additional tariffs | Total duty |
|---|---|---|---|
| China | 5.8% |
| 80.8% |
| Mexico | 5.8% |
| 55.8%50% with USMCA |
| Canada | 5.8% |
| 55.8%50% with Automotive Products Trade Act |
| Vietnam | 5.8% |
| 55.8% |
| Germany | 5.8% |
| 55.8% |
| Japan | 5.8% |
| 55.8%52.9% with US-Japan Trade Agreement |
| South Korea | 5.8% |
| 55.8%50% with US-Korea FTA |
| Taiwan | 5.8% |
| 55.8% |
| India | 5.8% |
| 55.8% |
| Ireland | 5.8% |
| 55.8% |
| Italy | 5.8% |
| 55.8% |
| Switzerland | 5.8% |
| 55.8% |
| Thailand | 5.8% |
| 55.8% |
| Malaysia | 5.8% |
| 55.8% |
| United Kingdom | 5.8% |
| 55.8% |
| France | 5.8% |
| 55.8% |
| Indonesia | 5.8% |
| 55.8% |
| Brazil | 5.8% |
| 55.8% |
| Bangladesh | 5.8% |
| 55.8% |
| Cambodia | 5.8% |
| 55.8% |
Duty from each country, in words
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from China pay 80.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%) and Section 301 – China (25%).
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from Mexico pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%). With USMCA, qualifying goods pay 50%.
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from Canada pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%). With Automotive Products Trade Act, qualifying goods pay 50%.
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from Vietnam pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%).
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from Germany pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%).
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from Japan pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%). With US-Japan Trade Agreement, qualifying goods pay 52.9%.
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from South Korea pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%). With US-Korea FTA, qualifying goods pay 50%.
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from Taiwan pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%).
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from India pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%).
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from Ireland pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%).
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from Italy pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%).
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from Switzerland pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%).
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from Thailand pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%).
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from Malaysia pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%).
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from United Kingdom pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%).
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from France pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%).
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from Indonesia pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%).
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from Brazil pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%).
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from Bangladesh pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%).
- As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from Cambodia pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%).
Duties on goods entered Oct 26, 2026 at the general rate (Column 2 where it applies), with tariff data verified through 2026 HTS Revision 20. Totals are before customs fees (MPF, HMF) and any antidumping or countervailing duties (AD/CVD); with a free account, the calculator checks the AD/CVD cases that may cover your import. Some tariffs and exemptions depend on details such as metal content or end use, which the calculator asks about. See US tariffs for every country.
Calculate Duty for Your ShipmentDuty History for HTS 7318.21.00
From China, the total duty on HTS 7318.21.00 is 80.8% as of Oct 26, 2026, up from 50.8% on Nov 17, 2025. It fell to 40.8% on Feb 24, 2026 and rose to 80.8% on Apr 6, 2026.
Changes from China
40.8% → 80.8%
Now applies: Section 232 – Steel, Aluminum & Copper (50%), 9903.82.02
No longer applies: Section 122 – Balance of Payments Surcharge (10%), 9903.03.01
Source: Proclamation 11021
50.8% → 40.8%
Now applies: Section 122 – Balance of Payments Surcharge (10%), 9903.03.01
No longer applies: IEEPA – China and Hong Kong (Fentanyl) (10%), 9903.01.24; IEEPA – Reciprocal Tariffs (10%), 9903.01.25
Source: Proclamation 11012
By Country of Origin
| Country of origin | Nov 17, 2025 | Oct 26, 2026 | Changes | Last change |
|---|---|---|---|---|
| China | 50.8% | 80.8% | 2 | Apr 6, 2026: 40.8% → 80.8% |
| Mexico | 30.8% | 55.8% | 2 | Apr 6, 2026: 15.8% → 55.8% |
| Canada | 40.8% | 55.8% | 2 | Apr 6, 2026: 15.8% → 55.8% |
| Vietnam | 25.8% | 55.8% | 2 | Apr 6, 2026: 15.8% → 55.8% |
| Germany | 15% | 55.8% | 2 | Apr 6, 2026: 15.8% → 55.8% |
| Japan | 15% | 55.8% | 2 | Apr 6, 2026: 15.8% → 55.8% |
| South Korea | 15% | 55.8% | 2 | Apr 6, 2026: 15.8% → 55.8% |
| Taiwan | 25.8% | 55.8% | 2 | Apr 6, 2026: 15.8% → 55.8% |
| India | 55.8% | 55.8% | 3 | Apr 6, 2026: 15.8% → 55.8% |
| Ireland | 15% | 55.8% | 2 | Apr 6, 2026: 15.8% → 55.8% |
Total duty on goods entered on each date at the general rate, before customs fees (MPF, HMF) and any antidumping or countervailing duties, from the same tariff data as the duty calculator. History starts on Nov 17, 2025, the first date our tariff data is verified for. Changes that only swapped one tariff for another at the same rate are listed but don't count toward the totals' changes.
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Top Origins: Countries the US Imports HTS 7318.21.00 From
In 2025 the US imported $80M of spring washers and other lock washers (HTS 7318.21.00 and related codes), up 2% on 2024, mostly from Germany (25%), China (18%) and Sweden (13%). Each country's total duty today is shown beside its imports.
| Country of origin | US imports, 2025 | Share | vs 2024 | Total duty today |
|---|---|---|---|---|
| Germany | $20M | 25% | 5% | 55.8% |
| China | $15M | 18% | 3% | 80.8% |
| Sweden | $10M | 13% | 18% | 55.8% |
| Taiwan | $7M | 8% | 14% | 55.8% |
| Italy | $4M | 5% | 6% | 55.8% |
| Japan | $4M | 5% | 10% | 55.8%52.9% with US-Japan Trade Agreement |
| India | $4M | 5% | 87% | 55.8% |
| France | $3M | 4% | 12% | 55.8% |
| Poland | $3M | 3% | 1017% | 55.8% |
| United Kingdom | $2M | 3% | 1% | 55.8% |
Source: U.S. Census Bureau, general imports (8-digit group, as Census has no figures for this exact line). Duty on a $10,000 ocean shipment entered today, before customs fees. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Relevant HTS Notes
Official USITC notes that may affect classification under HTS 7318.21.00.
Related CROSS Rulings for HTS 7318.21.00
CBP classification rulings related to 7318.21.00. Open a ruling to read how Customs classified a similar product.
Body housing, cover plate, plug, shaft, impeller, propeller, and bearing plate; housing cover thrust washer; locking rotor washer; oil pump parts; EN 73.13; spring washers and other lock washers;
Belleville Washers; Spring Washers; CIE 615/66; NY 858663; Item 646.70; 7318.22.00
Protest 1101-94-100421; disc springs; disc spring washers; HQs 954478, 955573; C.I.E. 615/66 and Suppl. #1; EN 73.18; EN 73.20; Hemscheidt Corp. v. U.S.; Thomas Equipment Ltd. v. U.S.; 19 U.S.C. 1315(d)
Protest 1101-93-100543; disc springs; disc spring washers; HQ 954478; C.I.E. 615/66 and Suppl. #1; EN 73.18; EN 73.20
The tariff classification of various lamp parts.
Revocation of NY N050746; Tariff classification of spare parts/repair kit
What does HTS code 7318.21.00 cover?
HTS code 7318.21.00 covers spring washers and other lock washers, classified under Chapter 73 (Articles of iron or steel) in the US Harmonized Tariff Schedule. The general duty rate is 5.8%. There are 2 more specific sub-classifications under this code.
What is the duty rate for HTS 7318.21.00?
The general (Column 1) rate of duty for HTS 7318.21.00 is 5.8%. Goods that qualify for a trade program can enter at the special rate: Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) 2.9% (JP). The Column 2 rate, for countries without normal trade relations, is 35%. Additional Chapter 99 tariffs, such as Section 301 and Section 232, can apply on top depending on the country of origin.
What is the US tariff on spring washers and other lock washers (HTS 7318.21.00) from China?
As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from China pay 80.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%) and Section 301 – China (25%).
Has the US duty on HTS 7318.21.00 from China changed?
From China, the total duty on HTS 7318.21.00 is 80.8% as of Oct 26, 2026, up from 50.8% on Nov 17, 2025. It fell to 40.8% on Feb 24, 2026 and rose to 80.8% on Apr 6, 2026. On Apr 6, 2026, Section 232 – Steel, Aluminum & Copper (50%) started to apply and Section 122 – Balance of Payments Surcharge (10%) stopped applying.
What is the US tariff on spring washers and other lock washers (HTS 7318.21.00) from Vietnam?
As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from Vietnam pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%).
What is the US tariff on spring washers and other lock washers (HTS 7318.21.00) from Mexico?
As of Oct 26, 2026, US imports of spring washers and other lock washers (HTS 7318.21.00) from Mexico pay 55.8% in duties: the 5.8% base rate plus Section 232 – Steel, Aluminum & Copper (50%). Goods that qualify for USMCA pay 50%.
Which country has the lowest US duty on HTS 7318.21.00?
Of the 20 largest sources of US imports, the lowest total duty on HTS 7318.21.00 is 55.8%, from Mexico, Canada and 17 more, as of the tariffs in effect on 2026-10-26.
Primary Sources
The official documents behind the rates and tariffs on this page. Duties are worked out from them as of Revision 20 (2026); check the legal text before you file.
- USITCHarmonized Tariff Schedule of the United States: 7318.21.00, Revision 20 (2026)
- USITCHTS Chapter 73, with its notes (PDF)
- USITCHTS Section 15 notes, printed with Chapter 72 (PDF)
- Federal RegisterSection 232 – Steel, Aluminum & Copper (9903.82.02): Commerce (ITA) notice, Procedures for Submissions by Certain Steel and Aluminum Producers Committing to New U.S. Steel or Aluminum Production To Obtain Tariff Adjustments Under Proclamation 10984, Annex, 91 FR 21790 (FR Doc. 2026-07987)
- CBPCROSS classification rulings for 7318.21.00
- U.S. Census BureauU.S. general imports by HTS code and country