Extension Springs

Key Product Highlights


Extension springs are designed to resist tensile or stretching forces.


When pulled outward, an extension spring will attempt to pull back into its coil

Pull Force

If your application requires a greater pull, the ends of the extension springs can be extended

End Configurations

Straight-cut, loop, hooks, and double twisted loop ends

Wire Diameter

.005" to .625"


As the spring is extended further, the resistance increases.

End Configuration

Our extension springs can be manufactured to incorporate a wide range of hooks and loop ends


We make extension springs of any length and degree of tension, no matter how complex the design requirements are

Wire Type

Typically made from round wire but we accommodate any type

Extension Springs


We most commonly use the following types of alloys in our flagship and custom products: carbon steel, alloy steel, stainless steel, nickel-based, cobalt-based, copper-based, and titanium. To view our full materials list, click on the click below.

View Materials List