Custom, Made-to-Order Torsion Springs

Need help creating a new design or solving a problem with your existing torsion spring? Looking for help engineering a double torsion spring? Our engineers use a spring design software to review your torsion spring for functionality and manufacturability and to look for improvements and cost savings. We check if the torsion spring has too much stress in its deflection range and if the spring’s design meets your required tolerances. In addition, we determine if the estimated life cycle is greater than you need and if there are any other design warnings.

With over 75 years of custom torsion spring manufacturing experience, we solve the toughest challenges. Contact us if you need samples quickly or to setup a discussion with a knowledgeable engineer to review and advise on your design.

Master Spring tailors torsion spring packaging to meet your unique assembly line and finished product needs. Our custom packaging solutions include tangle-free packing for efficient assembly operations, a pre-determined standard quantity per bag and individually bagged and labeled parts ready to ship to your customers.

Contact us today for more information about our custom torsion spring special packaging services.

Rubber Banded Torsion Springs

Tack Board Battery Connector

Small Bag of Custom Coil Springs

Helical Springs Strung on Wire Loops

Zip Tied Wire Forms

Nestled Wire Form Clips

Multiple Springs Layer-packed

Individually Bagged Spring Clips

Let Master Spring’s torsion spring assembly services lower your production costs by reducing the components you need to purchase and inventory. We can assemble your custom torsion spring with its mating part and send the sub-assembly to you.

Contact us today to get started with our custom torsion spring assembly services.

Small Torsion Spring Pin Clips

Double Torsion Spring

Pulse Oximeter Torsion Spring

Wire Spring Latch

Oval Loop Assembled to Extension Spring

Milk Frother

Rubber Sleeve on Retainer Spring

Ball Chains Assembled to Wire Form

Trot Line Clip

Copper Clasp Assembled Pull Pin

Torsion Spring Assembled to Molded Trigger

As your trusted torsion spring manufacturer, Master Spring’s experience and quality process provide the documentation you require for your custom torsion springs.

We have experience providing a Production Part Approval Process (PPAP) to our customers. After receiving our PPAP report, you can assess our process stability, review our controls to provide conforming product and have an approval outlet for any torsion spring design changes.

We create a First Article Inspection Report (FAIR) for each production run. The FAIR indicates the nominal dimensions, tolerances, precise measurements and methods of measurement for a requested quantity. Each FAIR provides a record of the raw material heat number to provide traceability to the batch of wire used for each production run.

Upon request, we can include certificates of compliance, material certificates and finishing certifications with each shipment of torsion springs.

Strict vendor management and lot control enable us to comply with regulatory compliances, including Conflict Minerals, DFARS, REACH, RoHS or California Prop 65. Let us know your documentation, certificate and compliance requirements when you request a quote.

Our CNC torsion machines form a wide range of wire sizes—giving us the ability to produce small torsion springs as well as torsion springs in larger sizes. With full CNC control of all axes, our machines can manufacture precise, custom torsion springs with wire diameters as small as 0.012” or as large as 0.250” (0.30mm to 6.35mm), and any size in between.

As a long-time, reliable torsion spring manufacturer, we have invested in a large inventory of torsion spring tooling to cover the wire diameter range for each torsion forming machine.

If your torsion spring requires custom tooling, our in-house tooling design and machining capability supplies custom tools quickly and economically.

Master Spring maintains strong relationships with local, qualified wire distributors and mills that offer quality wire to meet your specifications. We have years of experience making custom torsion springs from many different material types:

To complete your custom torsion springs, we offer an extensive variety of finishing types. We manage a strong network of local, qualified vendors who offer quality finishes, short lead times and competitive pricing. Learn more about our finishing services below.

In-house Stress Relief

We use in-line ovens at each torsion forming machine to apply low-temperature stress relief. This process alleviates residual stresses produced by prior cold forming and improves the torsion spring’s shape memory to maintain its coiled shape.

Shot Peen

Shot peening improves resistance to fatigue, prevents cracking and increases lifecycle. The shot peening process blasts the surface of the wire with steel or glass pellets to create deformations. Our local, qualified vendors specialize in quality shot peening and surface preparation.

Tumble

Tumbling improves surface finish by removing unwanted sharp edges and burrs from standard machine cuts.

Plate

Our large network of qualified platers provides a wide range of plating finishes such as black oxide, zinc, nickel, tin, trivalent chromate and many more finishes in a variety of colors.

Powder Coat

Numerous powder coat colors are available for torsion springs.

Passivate

An acid treatment for stainless steel, passivation removes contaminants and improves corrosion resistance. We recommend passivating stainless steel torsion springs used in the medical and food industries.

Electropolish

Electropolish brightens, removes burrs and passivates. For best results, use it on 300-series stainless steel types.

In-house Dye or Paint

Color coding helps identify and distinguish similar parts in your assembly line. We use an environmentally safe, water-based polymer coating. This coating adheres to the torsion spring in-line immediately after oven stress-relief.

E-coat

E-coat is an electrically applied paint coating that is used as a decorative or protective finish. It enhances appearance while also protecting the surface of torsion springs.

Magni Coat

Magni coat is a thin, paintable coat that provides exceptional corrosion protection in extreme environments. It is superior to zinc-plating.

Plastic Coat

We can add a plastic coating to your torsion springs in a variety of available colors.