Precisely Engineered
Consistent performance and tight tolerances
Extension Springs
Built to stretch, built to last. Our extension springs are designed to deliver dependable performance in tension applications across a wide range of industries.
Wide Range of Materials
From music wire to stainless steel
Custom Sizes & Configurations
Built to your exact specifications
Certified Quality
ISO 9001 & IATF 16949 certified manufacturing
Overview
Extension springs are close-wound helical springs designed to resist pulling forces. As the spring extends, it stores mechanical energy and returns toward its original length when the load is removed.
At Tri-Matic Spring, we manufacture extension springs in a wide range of materials, sizes, and configurations. Whether you need a prototype or high-volume production, we deliver springs that perform.
Request a QuoteTypical Applications
- Automotive systems
- Exercise equipment
- Industrial machinery
- Consumer products
- Garage doors & hardware
- Agricultural equipment
- Medical devices
- Aerospace components
Key Features & Benefits
Reliable Return Force
Designed around working load, extension length, and cycle requirements.
End Style Options
Machine hooks, full loops, side loops, crossover hooks, and extended hooks.
Precise Tolerances
Manufactured to support predictable fit, load, and installed length.
Custom Solutions
Material, finish, end geometry, and secondary operation support.
Specifications & Capabilities
- Wire Diameter Range
- .005" to .314"
- Spring Index Capability
- 2.5 minimum
- End Types
- Machine hooks, full loops, side loops, crossover hooks, and extended hooks
- Coatings/Finishes Available
- Zinc, phosphate, black oxide, Tri Clear, Tri Yellow, and more
- Quality Certifications
- ISO 9001:2015 and IATF 16949:2016
Material Options
We support a broad range of spring materials selected based on load requirements, environment, and performance expectations:
Music Wire
Stainless Steel
Hard Drawn
Oil Tempered
Chrome Silicon
Brass
Bronze
Flat Wire (Strip)
Our Manufacturing Process
From concept to production, we ensure quality every step of the way.
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01. Design & Engineering
Collaborate on specs and requirements
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02. Prototype & Testing
Rapid prototypes and performance validation
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03. Precision Manufacturing
Advanced coiling and stress relieving processes
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04. Quality Inspection
Rigorous testing to ensure compliance
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05. Finishing & Packaging
Finishing options and secure packaging
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06. On-Time Delivery
Reliable delivery and responsive support
Need a Custom Extension Spring?
Our engineering team is ready to help you find the right solution.