Music Wire Extension Spring
An extension spring crafted from high-carbon music wire, featuring loops at both ends for attachment, providing force when extended. Classified under HTS 7320.90.50.60 as other iron or steel springs for general industrial applications like trampolines or garage doors.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If in the form of leaf springs
Flat leaf springs for suspension are distinctly classified under 7320.20.
If part of base metal mountings or fittings for furniture
Springs integral to furniture hardware fall under Chapter 83 fittings.
If imported as component of furniture
Furniture parts including springs are classified with the furniture article.
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
• Label with exact wire specs (e.g
• diameter, material grade) for customs verification
• Avoid bulk packaging that suggests parts for assembly; declare as finished springs
Related Products under HTS 7320.90.50.60
Belleville Disc Spring
Conical disc spring from hardened steel for high-load, short deflection applications like bolted joints. Under HTS 7320.90.50.60 as other steel springs.
Volute Spring
Cone-shaped compression spring from steel strip for heavy shock absorption in railway buffers. HTS 7320.90.50.60 for other iron/steel springs.
Garoll Spring Retractor
Negator-style constant force spring for seat belt retractors (non-vehicle). Other steel springs in 7320.90.50.60.
Hairpin Torsion Spring
U-shaped torsion spring from steel wire for light-duty hinges. HTS 7320.90.50.60 other springs.
Clock Spring Mechanism
Spiral torsion spring for clockwork toys (non-precision). Other in 7320.90.50.60.
Snap Action Spring
Bimetallic or steel snap disc for thermostats. HTS 7320.90.50.60 other.