This browser is no longer supported. Upgrade to Microsoft Edge or switch to a supported browser, like Chrome, Safari, or Firefox, to explore the MW Components website.

We're sorry for the inconvenience.

5278CS - 5.63 Inch Spring Steel Extension Springs

Inventory:           
Estimated Lead Time

The 5278CS is a regular extension spring manufactured by Century Spring. It is made from spring steel and features a zinc finish for added durability. This spring has an outside diameter of 0.343 inch and a wire diameter of 0.054 inches. With a free length of 5.63 inches, it provides an initial tension of 4 pounds and can handle a maximum load of 16 pounds force. The 5278CS has a maximum deflection of 1.6 inches and a spring rate of 7.7 lbs/inch. It is equipped with extended hooks on both ends. This standard extension spring is suitable for a variety of applications.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. Our products, including the 5278CS, are made in the United States, ensuring high-quality craftsmanship. With our efficient shipping process and ample supply, Century Spring ensures that customers can quickly receive the springs they need for their projects.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Extended Hook
Finish Zinc
Initial Tension 4 lb
Length 5.63 in
Material Spring Steel
Outside Diameter 0.343 in
Part Type Standard
Rate 7.7 lbs/in
SKU 5278CS
Sugg Max Deflection 1.6 in
Sugg Max Load 16 lbf
Wire Diameter 0.054 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Extended Hook
Finish Zinc
Initial Tension 1.81 kg
Length 143 mm
Material Spring Steel
Outside Diameter 8.71 mm
Part Type Standard
Rate 1.35 N/mm
SKU 5278CS
Sugg Max Deflection 40.64 mm
Sugg Max Load 71.17 N
Wire Diameter 1.37 mm