Technical Resources
Practical engineering knowledge for buying and designing springs – materials, standards, coatings, tolerances and terminology, written by our engineers.
Free Engineering Resources
Choosing a spring material, reading a standard, selecting a finish or understanding a drawing – these decisions affect cost, life and reliability. We publish the knowledge our engineers use every day so buyers and designers can specify springs with confidence.
All guides are written by our spring engineers and are reviewed as standards change.
Explore the Guides
Five guides, one goal: better spring specifications.
Spring Steel Materials Guide
Carbon, alloy, stainless, copper and high-temperature grades with ASTM, EN, JIS and GB cross-references and selection advice.
Spring Standards by Region
DIN, EN, JIS, GB and ASTM manufacturing, material and tolerance standards mapped and explained.
Spring Coatings and Finishes Guide
Zinc, nickel, Dacromet, powder, e-coat, black oxide and phosphate - how to protect springs in any environment.
Spring Engineering Notes and Tolerances
Design parameters such as rate, solid height and initial tension, plus realistic tolerance guidance.
Spring Terminology Glossary
More than 30 spring terms defined in plain language, from active coils to wave springs.
How to Use These Guides
Start with the Materials Guide when you are choosing wire for a new design, the Standards page when a drawing quotes DIN or JIS numbers, and the Coatings page when a spring must survive a harsh environment.
The Engineering Notes page helps you check a specification before sending it for quotation – it saves time and money. Keep the Glossary open while you read drawings or emails from suppliers.
Need something specific? Our engineers are happy to discuss your application directly – there is no charge for advice.
Cannot Find What You Need?
Tell us your application and we will answer with a recommendation – or build the spring for you.
Spring Applications
