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Propeller Feathering Springs

High-strength steel coil springs enabling propeller feathering (zero thrust position) in civil multi-engine aircraft. Classified 8807.10.00.30 as critical propeller safety parts.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳ChinaFree+125.0%125%
🇲🇽MexicoFree+100.0%100%
🇨🇦CanadaFree+100.0%100%
🇩🇪GermanyFree+100.0%100%
🇯🇵JapanFree+100.0%100%

Alternative Classifications

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

7320.20.50Lower: 61.4% vs 125%

If generic helical springs

Aircraft-specific load ratings and civil certification distinguish from industrial springs.

8807.90Lower: 12.5% vs 125%

If nacelle-mounted springs

Propeller-specific feathering function keeps classification in 8807.10 subheading.

8411.91.90Lower: 37.5% vs 125%

If packaged with turboprop housings

Standalone springs classified as propeller parts, not engine casings.

Not sure which classification is right?

The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.

Import Tips & Compliance

• Include spring rate calculations and fatigue test data (e.g

• 10,000 cycles) for verification

• Specify corrosion-resistant coating (e.g

• cadmium plate) meeting MIL-specs

• Provide proof load test certificates required for life-limited parts import