Watch Spring Wire 0.6mm Heat Treated
Ultra-fine heat-treated high-carbon steel wire of 0.6 mm diameter for precision watch mainsprings and hairsprings. Meets HTS 7217.10.80.25 as round, nonalloy steel wire ≥0.6% carbon, heat treated, unplated, and <1.0 mm diameter.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If parts of watches/clock movements
Wire specifically manufactured as watch/clock components classified in Chapter 91.
If diameter ≥1.5 mm
Larger diameter heat-treated high-carbon wire falls into 'other' size category.
If stainless alloy steel
Corrosion-resistant stainless versions move to Chapter 72 alloy stainless wire headings.
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Import Tips & Compliance
• High precision requires calibrated measurement tools; submit photos/micrographs of cross-section for verification
• Avoid coiling patterns that suggest pre-forming, which could shift to finished article classification
• Carbon content certification critical; horology-grade wire often at exact 0.6-1.0% threshold
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