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Extension Springs

Extension Springs

Hold parts together with these extension springs. When the ends of the spring are attached to different parts and the parts are pulled apart, the spring stretches and pulls against the load in an effort to return to its original shape, bringing the parts together. The farther the spring is pulled apart, the greater the force it exerts on the attached parts. These springs are often found in equipment such as cots, garage door mechanisms, and vice-grip pliers.

General Purpose High Carbon Steel Springs

Made from durable high carbon steel wire, these extension springs are a good choice for light- or medium duty tasks.

Zinc-Plated High Carbon Steel

Crossover Center Loops

0.125 in OD

0.140625 in OD

0.15625 in OD

0.1875 in OD

0.203125 in OD

0.234375 in OD

0.25 in OD

0.28125 in OD

0.3125 in OD

0.328125 in OD

0.375 in OD

0.4375 in OD

0.5 in OD

0.578125 in OD

General Purpose Stainless Steel Springs

A good choice for light- to medium duty applications where corrosive elements or high temperatures may be encountered, these stainless steel extension springs provide better heat and corrosion resistance than extension springs made from high carbon steel or music wire.

Uncoated 302 Stainless Steel

Crossover Center Loops

0.1875 in OD

0.25 in OD

0.3125 in OD

0.375 in OD

0.4375 in OD

0.5 in OD

0.578125 in OD

High-Precision Music Wire Springs

For good reliability in precision applications, these extension springs have been manufactured to tight load and dimensional tolerances. They are made from music wire, which provides good strength and heat resistance in demanding applications with repeated cycles.

Uncoated High Carbon Steel

Full Twist Loops

0.18 in OD

0.24 in OD

0.3 in OD

0.36 in OD

0.5 in OD

High-Precision Stainless Steel Springs

Suitable for applications where corrosive elements or high temperatures may be encountered, these stainless steel extension springs provide better heat and corrosion resistance than extension springs made from high carbon steel or music wire. They have been manufactured to tight load and dimensional tolerances for good reliability in precision applications.

Uncoated 302 Stainless Steel

Full Twist Loops

0.18 in OD

0.24 in OD

0.3 in OD

0.36 in OD

0.5 in OD

Heavy Duty Springs

Also known as cot springs, these heavy duty extension springs can support high static loads. They are commonly used on cots and lawn furniture.

Zinc-Plated High Carbon Steel

Machine Hooks

0.5 in OD

0.6875 in OD

0.71875 in OD

0.75 in OD

Safety Drawbar Springs

Install these safety springs on gates, porch swings, and boat tethers to reduce the chance of spring failure under high loads. They have drawbars that prevent the spring from overextending or buckling and closed loop ends that help keep the spring from slipping off the attachment point or anchor when under load.

Uncoated 302 Stainless Steel

Closed Drawbar

0.675 in OD

0.875 in OD

1.1 in OD

1.162 in OD

1.192 in OD

1.375 in OD

1.625 in OD

1.746 in OD

1.87 in OD

1.875 in OD

2.1 in OD

2.462 in OD

Zinc-Plated High Carbon Steel

Closed Drawbar

0.675 in OD

0.875 in OD

1.1 in OD

1.162 in OD

1.192 in OD

1.375 in OD

1.625 in OD

1.746 in OD

1.87 in OD

2.1 in OD

2.462 in OD

Gate & Door Springs

Sturdy gate and door springs are often used in closure-assist mechanisms on doors and gates to pull them shut when they're released.

Zinc-Plated High Carbon Steel

Double Center Loops

0.358 in OD

0.4 in OD

0.46 in OD

Machine Hooks

1.035 in OD