As a leading compression spring manufacturer, our compression springs are made in the USA from the highest quality material available. We offer both stock and custom compression spring manufacturing, including free CAD downloads, same-day shipping for in-stock springs, and rapid turnaround for custom orders. With thousands of designs and millions of in-stock parts that ship same-day along with custom build-to-spec capabilities, we can help with any of your compression spring needs.
Need help with spring design data? Try our compression spring calculator.
The World's Largest Selection of Stock Springs
Our locations offer the world's largest selection of stock springs along with state-of-the-art CNC compression coiling equipment that can produce custom sizes and styles, including variable pitch springs, and more. We even offer prototyping and tooling assistance. No matter where you are in the design or production process, we have the knowledge, experience, and tools to bring your project to life.
“"The springs I ordered were in stock and shipped right away at a reasonable price. Great service. Very good product."”
Compression springs can be manufactured from a variety of materials with various finishes, wire sizes, and end types. Choosing the right configuration for your needs can involve a number of factors from application, environment, and industry. In addition to the capabilities below, we also both left and right wound springs and offer secondary processes such as grinding, shot peening, heat setting, and more.
- Carbon Steel
- Chrome Silicon
- Music Wire
- Stainless Steels (302/304, 316, & 17-7)
- Black Oxide
- Powder Coating & Color Coding
- Plating (Zinc, Nickel, Silver, Tin & Gold Electroplating)
- Cold Coiled: 0.002″ – 0.75″
- Hot Wound: 0.625″ – 3.00″
- Closed & Ground
Information & Resources
Dimensions Measurement Guide
- Hold the base of the spring in one hand, and the calipers in the other hand.
- Place the calipers on the outside of the last coil, measuring the largest dimension. This is called the Outside Diameter (O.D.).
- Place the calipers on the wire in the center of the spring. This is called the Wire or Material Size. You should also measure the wire toward one end for comparison and accuracy.
- Place the calipers on the full length of the uncompressed spring. This is called Free Length.
- Count the total coils, beginning at one end, just next to where the wire has been cut. Be sure you count all coils, including any portion of a coil. (see diagram for example)
How to Select a Compression Spring
Need more information on finding the right spring? Our engineering experts put together a full selection guide complete with design information, details on spring end types, and other characteristics you should look for in your part.
Compression Spring Service Life
If critical force-versus-deflection linearity is required, only the center 60-80% of the available deflection range should be employed. Thus, reserve at least the first and last 15-20% of the range for potential spring-end and adjacent coil-contact effects. These effects can be largely ignored for the majority of spring applications.
The “Suggest Maximum Deflection” used in some areas of our part documentation, including our Century Spring catalog, reflects the recommended inches of travel to obtain a statistical service-life of approximately 100,000 cycles(deflections) with infrequent breakage. This can be realized if the spring in question is not subjected to shock loads, rapid cycling, temperature extremes, corrosion, or stress values above those recommended. If the spring is statically loaded (not cycling), a near-infinite life can be expected. Extended spring service life can be achieved through shot-peening. For custom compression springs, our expert engineering team can provide additional support.
Shop In-Stock Springs
We have millions of parts in stock with over 40,000 unique spring designs that ship the same day you order. Whether you need a compression spring, extension spring, or urethane spring, we have the part you need.
Request a Custom Spring
MW Components has 20+ locations nationwide that can handle custom orders as small as one part or large production runs in the millions. We'll even provide design for manufacturability support to help reduce your costs and time to market.