Anti-Vibration Curved Spring Washer

Multi-curved steel washer profile absorbing vibration through controlled deflection. Non-threaded spring lock washer HTS 7318.21.00 for automotive suspension and engine mounts.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
πŸ‡¨πŸ‡³China5.8%+35.0%40.8%
πŸ‡²πŸ‡½Mexico5.8%+10.0%15.8%
πŸ‡¨πŸ‡¦Canada5.8%+10.0%15.8%
πŸ‡©πŸ‡ͺGermany5.8%+10.0%15.8%
πŸ‡―πŸ‡΅Japan5.8%+10.0%15.8%

More Specific Codes

This product may fall under a more specific subheading:

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

8708.80.65Higher: 52.5% vs 40.8%

If suspension system assemblies

Vehicle suspension parts heading.

8409.91.99Lower: 37.5% vs 40.8%

If engine mounting hardware

Engine parts classification.

7320.90.50Lower: 37.9% vs 40.8%

If standalone leaf springs

True flat springs vs. washer-form.

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

β€’ Vibration isolation test reports substantiate spring function

β€’ Automotive grade requires IATF 16949 supplier docs

β€’ Avoid engine part classification (8409.91)

Related Products under HTS 7318.21.00

M6 Stainless Steel Split Lock Washer

A helical split ring washer made from AISI 304 stainless steel, designed to compress under bolt tension for locking action. It falls under HTS 7318.21.00 as a non-threaded spring washer of steel that prevents fastener loosening due to vibration. Commonly used in automotive and machinery assembly.

1/4 Inch Zinc Plated Spring Lock Washer

A carbon steel washer with zinc plating for corrosion resistance, featuring a split ring that provides axial flex for vibration resistance. Classified under HTS 7318.21.00 as a non-threaded lock washer of iron or steel. Ideal for construction and electrical panel fastening.

Belleville Disc Spring Washer 20mm OD

A conical steel disc washer that flattens under load to maintain tension and absorb shock. It qualifies under HTS 7318.21.00 as a spring lock washer due to its elastic deformation properties. Used in high-pressure flange and valve applications.

M10 External Tooth Lock Washer

Steel washer with radially stamped teeth that bite into mating surfaces for locking. Non-threaded design places it under HTS 7318.21.00 as a spring lock washer. Prevents rotation in electrical and appliance assemblies.

Internal Star Lock Washer #10

Stainless steel washer with inward-facing teeth for secure locking against rotation on softer materials. Falls under HTS 7318.21.00 as a non-threaded steel spring lock washer. Common in electronics and aerospace fasteners.

Wave Spring Washer 25mm ID

Pre-tempered steel washer with multiple wave undulations providing spring force in tight spaces. Classified HTS 7318.21.00 as a non-threaded lock washer with spring properties. Used in automotive transmissions and pumps.