A leader in the aerospace industry for over 70 years, RCS is an approved supplier to the best in the industry...


Renton Coil Spring believes it takes the best people to be the best spring company...


Join the team that creates champions...




RCS opens it's doors a few blocks away from The Boeing Company headquarters in Renton Washington.



RCS pioneers the development of Beta-C Titianium as a spring material, alongside Boeing and McDonald Douglas.


iso 9001 certification

Renton Coil Spring's quality management system earns ISO 9001 certification.



RCS upgrades to a new 46,000 square foot facility, just blocks away from the original location.


motorsport expansion

RCS expands into the performance market to provide cutting edge applications for racing enthusiasts and all types of high performance motorsports.


mro certification

Renton Coil Spring Company earns certification form the FAA as an approved MRO facility.


RCS has a team of experienced professional and manufacturing personnel with a strong background in leadership, materials, spring design, and quality.

Chuck Pepka 

Chuck is the owner of Renton Coil Spring Company and a third generation spring designer and manufacturer.  He is a recognized leader in the design and development of titanium springs for the aerospace and performance racing industries.  Chuck has co-authored 7 technical papers related to spring design and titanium springs, and is a regular contributor to Springs Magazine.

Andy Knebel III

Andy has been at RCS since 1978.  His specialties include new materials, experimental parts, and process improvement. In his previous roles as a tool and die maker and shop foreman, he  has developed a strong understanding of what is done and what can be done to develop high performance springs.  Andy serves on the advisory committee at Renton Technical College.

Todd Lantz
VP of Production

Todd has been at Renton Coil Spring since 1988. He is in charge of all production teams, and oversees the complete processing of all manufactured parts. Todd also coordinates and maintains all aspects of personnel issues, preparation and delivery of annual reviews, salary forecasting and performance documentation up to and including corrective action of any policy violation.  

• careers •

Renton Coil Spring encourages life long learning and career growth.  Our management style is progressive and we reward employees for both individual and group effort.  We offer a clean, comfortable working environment and excellent benefits.

Our benefits package includes: medical, dental, and vision insurance, 401k, flex-plan, life insurance, and tuition reimbursement.  New employees must pass a pre-employment drug screening.

Renton Coil Spring Company is an equal opportunity employer.


RCS is seeking a journeyman level automatic spring coiler.  Applicant must have experience with single-point CNC, and mechanical 1, 11, 12, and 125 size machines (.006"-.275").  Must be competent producing torsion, compression, and extension style springs.  Experience with wire forming quill type machines is a plus.  

We are a lean shop (typical runs are 20 to 500 parts), so experience with standardized setup and quick changeovers is required.  

A minimum of 5 years of setup experience is required.  Compensation is at the top end of the pay scale for this position and a relocation package will be considered for a qualified individual.


To enhance Renton Coil Spring's ability to provide the best in Customer Satisfaction by having a well-trained, productive work force and maintain high quality standards, it's necessary to have our final products shipped in a timely manner accordingly to our customer's requirements.

Although we will outline some specific duties for the role, this position is progressive and will be altered over time.  Our overall goal is to work with our shipping lead to ensure quality parts are being sent to our customers and that they meet all their requirements.  Shipping should also play a proactive role with production to serve as the final set of eyes prior to shipment.  This is a non-exempt position and employees will be eligible for over-time pay.


Renton Coil Spring is looking for motivated and focused candidate to join our team.  Based in the heart of downtown Renton, RCS uses cutting-edge, patented technology and engineering expertise to develop products for the most challenging of aerospace, commercial, space, and performance applications since 1949.

This individual will primarily be responsible for receiving and issuing raw material, parts or tooling, storekeeping, scanning, document control, housekeeping, transferring parts and materials.  Along with providing assistance to other departments as needed.  Accurate counting is critical to the overall success of this position.  This is a non-exempt position and employees will be eligible for over-time pay.  


Renton Coil Spring is looking for motivated and focused candidates to join our production team. Based in the heart of downtown Renton, RCS uses cutting-edge, patented technology and engineering expertise to develop products for the most challenging of aerospace, commercial and performance applications since 1949.

• Support your team through multiple phases of spring production (coiling, grinding, racking, deburring, grit blasting and assembly.)
• Assist with special projects, new product development and testing
• Maintain a safe and clean working environment by complying with procedures, rules, and regulations
• Cross train within the department to learn other skills and work processes
• Participate in RCS provided skills development

Renton Coil Spring has been officially awarded the 2020 HIRE Vets Medallion Award!

The Honoring Investments in Recruiting and Employing American Military Veterans (HIRE Vets) Medallion Program implements the requirements of the HIRE Vets Act of 2017 (Public Law 115-31).  The HIRE Vets Medallion is the only federal award recognizing exceptional achievement in veteran employment.  By meeting the criteria required for a Gold Medallion Award, Renton Coil Spring demonstrated both patriotism and recognition of the value veterans bring to the workplace.

shipping address

425 s 7th st.
renton, wa 98057-2504 usa

mailing address

po box 880
renton, wa 98057-0880 usa

general contact

email: info@rentoncoilspring.com
phone: 425.255.1453
fax: 425.228.0780