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81020CS - 5 Inch Music Wire Extension Springs

Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours

The 81020CS is a regular extension spring manufactured by Century Spring. It has a free length of 5 inches and a wire diameter of 0.125 inches. With a maximum deflection of 3.3 inches, this spring is capable of handling a maximum load of 73 pound force. The spring rate is 20 lbs/inch, providing the necessary tension for various applications. Made from high-quality music wire, this spring is built to last. The 81020CS features a full loop on both ends, ensuring secure attachment. It has an outside diameter of 1 inch and weighs 0.2817 pounds. This standard extension spring is ideal for a wide range of projects.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. We understand the importance of quick turnaround times and strive to deliver our products promptly. With our significant stock, including the 81020CS, customers can trust that we have the springs they need readily available. Additionally, all of our springs are proudly made in the United States, guaranteeing high-quality craftsmanship. Trust Century Spring for reliable shipping, ample supply, and top-notch springs for your projects.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Full Loop
Finish None
Initial Tension 6 lb
Length 5 in
Material Music Wire
Outside Diameter 1 in
Part Type Standard
Rate 20 lbs/in
SKU 81020CS
Sugg Max Deflection 3.3 in
Sugg Max Load 73 lbf
Wind Direction Left
Wire Diameter 0.125 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Full Loop
Finish None
Initial Tension 2.72 kg
Length 127 mm
Material Music Wire
Outside Diameter 25.4 mm
Part Type Standard
Rate 3.5 N/mm
SKU 81020CS
Sugg Max Deflection 83.82 mm
Sugg Max Load 324.7 N
Wind Direction Left
Wire Diameter 3.18 mm