Incabloc Shockproof Hairspring
An Incabloc system hairspring with integrated shock protection for luxury mechanical watch movements, made from tempered steel wire. It serves as a spring regulating the balance wheel and falls under tariff item 7320.90.00 as an 'other' spring of iron or steel.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | +50.0% | 50% |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
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.
If imported as a component of a watch movement
Section Note 1(h) excludes clock or watch springs from Chapter 73.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Confirm the product is a spring and not a shock absorber of another heading
• Provide the steel composition and dimensions to support classification
• Be aware that watch parts may be subject to different duty rates under Chapter 91
Related Products under Tariff item 7320.90.00
Anti-Shock Breguet Hairspring
A specialized hairspring for mechanical watch movements, featuring a Breguet terminal curve and anti-shock mounting pins. Constructed from steel wire, it regulates the oscillation of the balance wheel for precise timekeeping, falling under tariff item 7320.90.00 as an 'other' spring of iron or steel.
Belleville Disc Spring
A conical disc-shaped steel spring that stacks for high load capacity, used in bolted joints and safety valves. It falls under tariff item 7320.90.00 as an 'other' spring of iron or steel, not elsewhere specified.
Bowed V-Spring Washer
A V-profile steel washer spring providing light axial force in assemblies. It is classified under tariff item 7320.90.00 as an 'other' spring of iron or steel, distinct from flat washers.
Brelet Breguet Overcoil Hairspring
A Breguet-style overcoil hairspring for chronometer-grade watches, made from high-elasticity steel to minimize isochronism errors. This steel wire spring is designed for precise timekeeping and falls under tariff item 7320.90.00 as an 'other' spring of iron or steel.
Cantilever Spring Arm
A single-arm steel spring deflecting under load for parking brakes and levers. It falls under tariff item 7320.90.00 as an 'other' spring of iron or steel, not being a leaf spring.
Clock Spring for Steering Columns
A flat spiral steel spring wound in a clock-like coil for storing rotational energy in turn signal mechanisms. It is classified under tariff item 7320.90.00 as an 'other' spring of iron or steel, not being a clock or watch spring.