Carbon Steel Extension Spring
Wire-formed extension spring of carbon steel, with loops at ends for tensile applications in tools and appliances. Classified under 7320.90.5020 as 'other' wire springs (diameter <16mm), distinct from leaf or vehicle-specific types. Common in garage doors and trampolines.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If wire diameter >16mm
No longer qualifies as Chapter 73 'wire'; becomes other steel spring.
If for retail sale as base metal mountings/fittings
Springs for furniture/hardware in retail packaging classified under Chapter 83.
If imported as replacement part for bicycle suspension
Vehicle parts (bicycles) take Chapter 87 over general springs.
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Import Tips & Compliance
• Label with exact wire gauge and material certs; customs rejects vague 'steel spring' descriptions
• Separate from sets/kits to prevent reclassification as machinery parts
Related Products under HTS 7320.90.50.20
Phosphor Bronze Equivalent Steel Wire Spring
Steel wire spring mimicking phosphor bronze properties for electrical contacts. HTS 7320.90.5020 as steel wire spring ≤16mm, used in switches/relays where conductivity secondary to strength.
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Fine wire tension spring (0.5-2mm dia) for medical devices and instruments. 7320.90.5020 for other wire springs, precision-wound stainless steel. Biocompatible finish.
Double Torsion Wire Spring
Dual-leg torsion spring from music wire for battery contacts and clamps. HTS 7320.90.5020 wire spring category.
Conical Compression Wire Spring
Tapered conical spring from steel wire for progressive loading in shock absorbers. 7320.90.5020 as other wire spring.
Square Wire Belleville Washer Spring
Square-section wire disc spring (Belleville) for high-load stacking. Wire ≤16mm qualifies 7320.90.5020.
Hairpin Tension Spring
Hairpin/bungee-style wire spring for gates and tarps. 7320.90.5020 classification.