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Where can I buy stock torsion springs?

Components maintains one of the industry's largest inventories of in-stock torsion springs, with same-day shipping available for many parts. Our catalog includes single, double, and small torsion springs in a variety of wire diameters, materials, and left or right wind directions. We even offer a selection of optional finishes that can be applied to your order, including black oxide, gold iridite, and zinc.听

Use our online filters to find the exact part you need by size, material, or orientation.听

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Where can I buy custom torsion springs?

When you need a custom spring, Components offers entirely custom spring engineering, including expert engineering support from a variety of knowledgeable in-house manufacturing and engineering experts. Our team will work with you to optimize torque, coil count, material, and finish for your application, from prototyping to high-volume production.听

No matter where you are in the design process, we can assist. Simply request a custom quote to begin, and we'll work with you to optimize your current design or develop something entirely new. 听

Request a Custom Quote

Most of our in-stock torsion springs ship the same day your order is placed. For custom spring orders, lead times depend on the complexity of the design, whether prototypes are needed, and the material and finish requirements (standard vs. specialty). Typical production takes between 4-6 weeks; though expedited production is possible for urgent projects. Contact us to discuss timelines.听

Yes - bulk pricing applies at higher volumes, and our engineering team can optimize designs for cost-efficient production. Pricing tiers and MOQs vary by spring size and material. Request a quote to learn more.

Request Quote for Bulk Orders

A torsion spring is a type of coiled spring that exerts a twisting force, or torque, along a central axis. Depending on the application, torsion springs can be designed to work in a clockwise or counter-clockwise rotation, thus determining the direction of the wind.听

offers a selection of stock and standard torsion springs with legs of equal length oriented at varying unloaded angles, as well as custom torsion spring manufacturing.

What makes torsion springs unique?

Torsion springs are unique because they store mechanical energy through twisting rather than stretching or compressing. This allows them to exert a torque when turned, making them ideal for applications like closing doors, retracting mechanisms, and in various automotive components. Their design enables them to deliver a significant amount of force in a compact form, making them versatile for both small and large devices. Additionally, the precise engineering involved in their manufacturing allows for customization in terms of size, material, and strength.

Torsion springs work by storing and releasing angular energy or statically holding a mechanism in place by deflecting the legs about the body centerline axis. They offer resistance to twist or rotationally applied force. A spring of this type will reduce in body diameter and increase slightly in body length when deflected in the preferred direction of the fabricated wind.

Torsion springs are used in a wide variety of applications. Some of the most common include garage door torsion springs and door hinge torsion springs. Other uses may include clothespins, levers, and clocks, as well as use in the automotive, medical, and industrial manufacturing industries.

The life expectancy of a torsion spring largely depends on its material, design, and the amount of stress it endures during operation. The majority of torsion springs last 10-15 years, or a minimum of 5,000 to 25,000 cycles. High-quality torsion springs made from durable materials can last anywhere from several thousand to millions of cycles, depending on the specific application. Factors such as environmental conditions, frequency of use, and the magnitude of applied torque also play significant roles in their longevity. Regular maintenance and proper installation can further extend their lifespan, ensuring reliable performance over time.

Tolerance values for torsion springs depend on the body-diameter to wire-diameter ratio and are about +/- 10% in torque and +/- 5% in diameter.

The torsion spring configuration is designed for the purpose of storing and releasing angular energy or for the purpose of statically holding a mechanism in place by deflecting the legs about the body centerline axis. A spring of this type will reduce in body diameter and increase slightly in body length when deflected in the preferred direction of the fabricated wind.

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When designing a torsion spring, it's important to consider your application and whether you will need round, rectangular, or shaped wire, like square wire. The simplest and most common torsion spring designs are single body torsion springs made from rectangular wire with straight ends, although this design format can be modified with bends and formed shaped.

The direction of the fabricated wind can also be important for torsion spring applications due to the leg bearing/attachment location having to be on the left or right side upon assembly. A torsion spring is normally supported by a rod (mandrel) that is coincident with the theoretical hinge line of the final product.

Double torsion spring designs are more complex, and the manufacturing method will need to be considered. Double torsion springs are coiled from the center, as opposed to single torsion springs, which are coiled from the ends. For details on torsion spring design for both single and double body torsion springs, reach out to our engineering team through our Ask an Expert form.

Correct dimensions are crucial in identifying the right spring for your application. Use the steps and diagram below to accurately measure your torsion springs.

1. Hold the spring in one hand and the calipers in the other hand.
2. Place the caliper 鈥渢eeth鈥� on the inside diameter. This is called the Inside Diameter (I.D.).
3. Place the calipers on the 鈥渓eg鈥� to measure the wire. This is called Material Size (or Wire Diameter).
4. Place the calipers on the working coils of the spring. This is called the Body Length. Place the calipers on the working coils of the spring. This is called the Body Length.
5. Count the total coils, beginning at one end, just under where the leg leaves the body. Count to the other end, all full coils, and any fraction thereof. This is called the Number of Coils and determines leg position. i.e. 90掳, 180掳, etc.
6. Determine the direction of the coil (Wind Direction). See diagram for hand/finger illustration. Right Hand Wind or Left Hand Wind.

There are single body torsion springs and double body torsion springs. A single body torsion spring has one core coiled area with two ends. A double body torsion spring has two coiled areas connected by a bridge. Each body in a double torsion spring has one end that can be tailored to individual needs.
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Double torsion springs have a number of advantages over single torsion springs, including greater strength and the ability provide more force. They are frequently used in

Single body torsion springs are common across manufacturers, but it is rare to find a double body torsion spring manufacturer. offers both single and double body torsion springs.