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Compression Springs

A compression spring is a type of coil spring that resists a compressive, or pushing, force along its axis. It is designed to store mechanical energy when compressed and then return to its original length once the load is released.

RCS can design and manufacture compression springs from 0.008" up to 1.375" diameter wire and bar stock. Round, square and rectangular cross sections are available for compression springs.

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Extension Springs

Extension springs, or tension springs, are a type of coiled spring designed to resist a pulling force by storing and releasing energy when stretched. It operates by having its coils pulled apart, and it returns to its original, tightly wound shape when the force is removed.

RCS is able to design and build extension springs from 0.015" to 0.630" diameter wire. Infinite hook variations are manufactured as well as extension assemblies with coned or threaded terminals.

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Torsion Springs

A torsion spring is a type of helical spring that stores and releases angular energy by exerting a rotational or torque force when its ends are twisted. It works by using its ends, called legs, to apply force as they rotate, returning the component to its original position once the force is released.

RCS is capable of designing and producing torsion springs from 0.015" to 0.625" diameter wire and bar stock. Round, square and rectangular cross sections are available as well as tapered or multiple diameter springs.

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Clock Springs

Clock springs or spiral springs are a mechanical device made of a flat metal strip or wire wound into a spiral or helix shape that stores and releases rotational energy. One end is typically fixed to an axle, and the other end is free to move, allowing it to store energy when wound and release it when the force is removed.

RCS designs and manufactures clock springs from 0.005" up to 0.200" thick materials. These springs are also known as spiral torsion or hair springs.

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Belleville Washers

A Belleville or wave washer, also called a disc spring or conical spring washer, is a conical-shaped metal washer with an open center that can be loaded along its axis to create a spring force.

For high load applications with a small installation space, RCS can design and build custom belleville or wave washers.
In the aircraft and automotive industries, these are used as vibration-damping elements because of their extremely detailed tuning ability.

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Wire Forms

A wire form is a metal wire that has been bent into a specific, three-dimensional shape for a particular purpose, such as a spring, hook, or clip. The process of creating these forms, called wire forming, involves bending and shaping wire from a coil or blank into a desired configuration.

Renton Coil Spring can create wire forms from material 0.025" up to 0.250" diameter wire and bar stock.



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Flat Forms

A flat form is a metal sheet material that has been bent into a specific, three-dimensional shape for a particular purpose, such as a spring, hook, or clip.

RCS progressive tooling designs allows production
of complex, close tolerance flat parts in an economical and timely manner.
With in-house stamping capacity of 50 tons,
material from 0.003" up to 0.125" thick and from
0.050" to several inches wide can be stamped and
formed to close tolerances.

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RAW MATERIALS LIST

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Materials

Renton Coil Spring Company manufactures precision springs from round, square, and rectangular wire and bar, with stamping and forming capabilities for flat, sheet, and strip materials.  While specializing in titanium springs, RCS also works with a broad range of ferrous and nonferrous alloys.

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Titanium

Renton Coil Spring Company has over 30 years of experience designing, manufacturing, and testing high performance titanium springs for demanding aerospace, commercial, and motorsport applications.  RCS continues to advance state of the art titanium design and manufacturing to meet emerging performance driven markets.

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WHY TI?
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Engineering

Renton Coil Spring Company offers advanced engineering support through proprietary spring design software and 3D modeling in SolidWorks® and CATIA®.  As an ISO 9001–registered manufacturer, RCS can develop fully compliant drawings to your specifications or evaluate customer supplied drawings prior to production - ensuring accuracy, manufacturability, and performance.

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Tooling & Equipment

Renton Coil Spring Company operates a fully integrated manufacturing facility equipped with state of the art tooling and equipment, much of it designed and developed in-house.  Backed by a highly skilled machining team, RCS offers greater flexibility, reduced lead times, and continuous process improvement for new and existing programs.

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NADCAP CERTIFICATE

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Heat Treating

Renton Coil Spring Company operates aerospace certified heat treating ovens capable of temperatures up to 1200°F.  NADCAP accredited, RCS performs aging and stress relieving to a wide range of aerospace specifications, ensuring precise material performance and full compliance with critical requirements.

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Finishing

Renton Coil Spring Company utilizes approved finishing companies who perform a variety of material finishes.  Many of these vendors are conveniently located in the Seattle area.

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FINISHES LIST
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QUALITY DOCUMENTS

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Quality

Renton Coil Spring Company’s quality system is certified to ISO 9001:2015, AS9100D, NADCAP (Heat Treat), ITAR registration, and Boeing accreditation, ensuring full regulatory compliance.  Complete traceability is maintained for all raw materials, components, and finished products, with records retained per customer requirements.

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Cycle Testing

Renton Coil Spring Company’s capabilities extend beyond manufacturing to comprehensive in-house cycle testing of compression, extension, torsion, double torsion, clock springs, and assemblies.  RCS employs advanced methods to accurately replicate real world operating conditions and has long partnered with leading aerospace, commercial, and motorsport companies to develop and refine cutting edge testing procedures for high performance applications.

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Shipping Address

Renton Coil Spring Company
425 S 7th St
Renton, WA 98057 USA

Mailing Address

Renton Coil Spring Company
PO Box 880
Renton, WA 98057 USA

General Contact

info@rentoncoilspring.com
Phone: 425-255-1453
Fax: 425-228-0780

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