Nickel Silver Watch Spring Wire
Nickel silver watch spring wire is a precision-drawn, bare copper-nickel-zinc alloy wire used to manufacture hairsprings in mechanical watches. Its uniform cross-section and coil form meet the definition of wire under Chapter 74, and its copper-nickel-zinc base alloy composition classifies it under tariff item 7408.22.00.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪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 the wire is made of copper-zinc base alloys (brass)
Brass wire falls under a different subheading for copper alloys.
If the wire is made of refined copper, not an alloy
Refined copper wire is classified separately from copper alloy wire.
If the wire is specifically shaped or cut as a clock or watch spring
Watch springs are excluded from Chapter 74 by Section XV note 1(h) and fall under Chapter 91.
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
• Ensure the wire is uncoated and meets the copper-nickel-zinc alloy definition (nickel ≥5% by weight) to qualify for 7408.22.00
• Declare the wire's coil form and uniform cross-section on customs documents to avoid misclassification
• Keep supplier certificates of analysis to verify alloy composition if requested by the CBSA
Related Products under Tariff item 7408.22.00
Constantan Bare Wire for Strain Gauges
High-precision bare constantan (cupro-nickel alloy) wire for strain gauge sensors in engineering applications. It falls under tariff item 7408.22.00 as uncoated wire of copper-nickel base alloys, meeting the definition of copper-nickel base alloys with nickel content at least 5% and zinc not exceeding 1%.
Cupro-Nickel 70/30 Wire for Heat Exchangers
Bare 70/30 cupro-nickel wire used in condenser tube supports and heat exchanger components. It falls under tariff item 7408.22.00 as uncoated wire of copper-nickel base alloys, with the 70/30 composition meeting the copper-nickel base alloy definition.
Cupro-Nickel Annealed Wire for Marine Hardware
Soft-annealed bare cupro-nickel wire (90/10 alloy) for corrosion-resistant marine fasteners and rigging. It falls under tariff item 7408.22.00 as uncoated wire of copper-nickel base alloys, with the 90/10 composition meeting the copper-nickel base alloy definition.
Cupro-Nickel Coated Electrical Wire
This is a thin wire made from a copper-nickel base alloy (cupro-nickel), coated with a layer of silver for enhanced conductivity and corrosion resistance. It falls under tariff item 7408.22.00 because it is wire of copper-nickel base alloys, and the silver coating does not change its classification as a copper alloy wire.
Cupro-Nickel Fine Wire for Medical Sensors
Ultra-fine bare cupro-nickel wire for biomedical temperature sensors and implants. It falls under tariff item 7408.22.00 as uncoated wire of copper-nickel base alloys, meeting the definition of copper-nickel base alloys with nickel content at least 5% and zinc not exceeding 1%.
Cupro-Nickel Palladium-Plated Precision Wire
Ultra-fine cupro-nickel wire with palladium plating for catalytic converter sensors and hydrogen fuel cells. It falls under tariff item 7408.22.00 as wire of copper-nickel base alloys, and the palladium plating does not alter its classification as a copper alloy wire.