Large Die Spring for Stamping Presses
Rectangular-section helical compression spring from 10 mm round wire equivalent for industrial metal stamping dies. Classified HTS 7320.20.50.45 for helical springs of qualifying wire dimension. Used in high-cycle progressive die applications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If interchangeable tools for presses
Springs designed as interchangeable tooling for hand/ machine tools classify under Chapter 82.
If coiled but not helical springs
Extension springs without true helical form may fall under coil spring provisions.
If parts of metalworking machine tools
Die components including springs for specific machine tools classify under Chapter 84.
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Import Tips & Compliance
• Include load/deflection curves and cycle life specifications from manufacturer
• Color-code per NAAMS standards (red/green for heavy duty) for quick verification
• Ensure nested springs are declared separately to avoid set classification
Related Products under HTS 7320.20.50.45
Heavy-Duty Compression Coil Spring for Truck Suspension
This helical spring is made from steel wire with a 7 mm diameter cross-section, designed to absorb shocks in heavy truck suspension systems. It falls under HTS 7320.20.50.45 as a helical spring of iron or steel wire measuring 5.1 mm to 12.7 mm in cross-section. Commonly used in automotive applications for durability under high loads.
Industrial Conveyor Belt Tension Spring
A large helical tension spring from 8 mm wire used to maintain tension in heavy industrial conveyor systems. Classified under HTS 7320.20.50.45 due to its helical construction and wire diameter between 5.1 mm and 12.7 mm. Essential for manufacturing and material handling equipment.
Garage Door Extension Helical Spring
High-tension helical spring made from 6.5 mm steel wire for counterbalancing residential garage doors. It meets HTS 7320.20.50.45 criteria as a helical spring of appropriate wire dimension per Chapter 73 wire notes. Safety cables often paired but classified separately.
Heavy Equipment Seat Suspension Spring
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Forklift Mast Extension Spring
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Trampoline Safety Enclosure Spring
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