Helical springs, of wire having a cross-sectional dimension of 5.1 mm or more but less than 12.7 mm
Springs and leaves for springs, of iron or steel: > Helical springs: > Other > Helical springs, of wire having a cross-sectional dimension of 5.1 mm or more but less than 12.7 mm
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
Products classified 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
Compression helical spring of 9 mm wire diameter for vibration isolation in construction equipment operator seats. Falls under HTS 7320.20.50.45 as specified helical springs of iron/steel wire in the stated dimension range. Meets Chapter 73 definition of formed wire products.
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.
Forklift Mast Extension Spring
Heavy-duty helical tension spring of 7.5 mm wire for forklift mast chain tensioning systems. Meets HTS 7320.20.50.45 specifications for helical wire springs in dimension range. Critical safety component in materials handling equipment.
Trampoline Safety Enclosure Spring
Galvanized helical compression spring from 6 mm wire connecting trampoline safety enclosure poles to frame. Classified under HTS 7320.20.50.45 as qualifying helical wire spring. Meets ASTM F381 recreational equipment standards.
Heavy-Duty Gate Return Spring
Helical torsion spring of 8 mm wire for automatic return on farm/industrial sliding gates. Falls under HTS 7320.20.50.45 per helical spring and wire dimension specifications. High-cycle rated for frequent operation.
Oven Door Counterbalance Spring
High-temperature helical tension spring from 5.5 mm stainless wire for commercial oven doors. Classified HTS 7320.20.50.45 meeting wire dimension and helical form requirements. Rated for continuous 500°F operation.
Exercise Machine Resistance Spring
Progressive rate helical compression spring of 9.5 mm wire for commercial gym leg press machines. Meets HTS 7320.20.50.45 for specified helical steel wire springs. Provides variable resistance training 100-800 lbs.
Hydraulic Press Return Spring
Extra-heavy helical compression spring from 11 mm wire for returning rams in H-frame hydraulic presses. Classified under HTS 7320.20.50.45 as helical spring of proper wire gauge. 50,000+ cycle fatigue rated.
Boat Trailer Winch Spring
Spiral helical torsion spring of 6.8 mm wire for constant force in boat trailer winches. Meets HTS 7320.20.50.45 helical wire spring criteria. Corrosion-resistant coating for marine environment.
Conveyor Idler Tension Spring
Dual-coil helical extension spring from 7.2 mm wire maintaining belt tension on gravity conveyor idlers. Classified HTS 7320.20.50.45 per wire and helical specifications. Zinc plated for warehouse environments.
Agricultural Sprayer Boom Spring
Floating helical compression spring of 8.5 mm wire for chemical sprayer boom height adjustment. Falls under HTS 7320.20.50.45 helical wire spring provisions. Chemical-resistant polymer coating.
Industrial Door Closer Spring
High-torque helical torsion spring from 10.2 mm wire for fire-rated industrial roll-up doors. Classified HTS 7320.20.50.45 meeting helical and wire dimension requirements. 1 million cycle rating.