Calculating Spring Tension

Various Extension Springs

All springs are constructed to have an initial tension, that force that keeps the coils together in a set position. As a measurement, initial tension is the load or force necessary to overcome the internal force to start coil separation. How to calculate spring tension, and its importance will help to determine how effectively a… Read more »

Custom Spring Design Specifications and Ordering Tips

Extension Springs

Springs are ubiquitous mechanical components found in a wide range of machines and devices—from consumer goods to large-scale industrial equipment. For manufacturing, custom spring design specifications are essential to meet component requirements. Size, load weight, and material are necessary to fulfill design specifications. Before any of those specifications can be met, engineers will determine which… Read more »

Low Carbon Steel Compression Limiters

Compression Limiters

James Spring & Wire has extensive experience in custom designing and manufacturing compression limiters to meet any application. Compression limiters are used to protect plastic parts and components from damage due to the tightening load of a bolt or screw. Depending on the strength requirements of your specific application we can custom design a compression… Read more »

How Custom Springs Are Made

Spring Manufacturing

Custom spring manufacturing is designed for customized or unique spring applications for products. Determining how springs are made relates to the application. Custom springs are made to meet specific design requirements for products across multiple industrial sectors—aerospace, automotive, medical, IT and AI, trades and construction, agriculture, manufacturing, and so on. They can vary greatly with… Read more »

Why Use Titanium for Medical Applications

Surgical Tools

Titanium resists corrosion and is bio-compatible. Titanium also has the ability to join with human bone, which is one of the reasons it is used so often in the medical industry. Titanium metal is used in medical and surgical applications, such as surgical titanium instruments, orthopedic titanium rods, titanium pins, and titanium plates.

Custom Compression Springs: A Popular Choice for Sporting Equipment


Our custom compression springs can be used to provide resistance for strength conditioning and muscle development in fitness equipment. We can manufacturing springs with light, medium or high compression to provide a range of resistance levels. Light compression springs provide up to 20lbs of resistance and are useful in sporting goods equipment for beginners or… Read more »

Helpful Guide to Measuring Compression Springs

Various Compression Springs

In order for a compression spring application to perform properly in a device, it must meet an expected force at a particular height. The importance cannot be understated—measuring compression springs are a design function necessary to meet a device’s application requirements. That device could be a retractable pen, an automobile’s suspension, a mining or oilfield… Read more »

Custom Mil-Spec Springs

army helicopter

James Spring & Wire is an ITAR registered custom spring manufacturer with experience manufacturing mil-spec springs that meet all military specification requirements for use in aerospace, military and defense applications.

5 Facts You Might Not Know About Springs


A spring is an elastic device or component that is manufactured by a spring company for numerous industrial applications. Most have a helical or coil shape with many design functions, depending on the application, to maintain a force between objects or contacting surfaces, or to exert or absorb a shock. Springs store and release mechanical… Read more »

Non-Ferrous Alloy Springs for Medical Devices

Medical Devices

James Spring and Wire has over 40 years of experience manufacturing springs and wire forms for medical devices and over 20 years of experience manufacturing medical implants.