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
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If generic helical springs
Aircraft-specific load ratings and civil certification distinguish from industrial springs.
If nacelle-mounted springs
Propeller-specific feathering function keeps classification in 8807.10 subheading.
If packaged with turboprop housings
Standalone springs classified as propeller parts, not engine casings.
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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
Related Products under HTS 8807.10.00.30
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