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5521CS - 8 Inch Spring Steel Extension Springs

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

The 5521CS is a regular extension spring manufactured by Century Spring. It is made from spring steel and has a zinc finish. This spring has a wire diameter of 0.042 inches, an outside diameter of 0.328 inches, and a free length of 8 inches. It has an initial tension of 1 Pound and a maximum deflection of 6.2 inches. The 5521CS has a spring rate of 1.1 lbs/inch and a maximum load of 8.2 Pound Force. It features machine hook ends and is suitable for various extension spring applications.

At Century Spring, we pride ourselves on our fast shipping and extensive stock inventory. We understand the importance of receiving your springs quickly, which is why we offer reliable and efficient shipping services. Our significant stock inventory ensures that we have the parts you need, including the 5521CS, readily available for immediate shipment. Additionally, all of our springs are proudly made in the United States, ensuring high-quality craftsmanship and supporting local manufacturing. Trust Century Spring for all your spring needs.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 1 lb
Length 8 in
Material Spring Steel
Outside Diameter 0.328 in
Part Type Standard
Rate 1.1 lbs/in
SKU 5521CS
Sugg Max Deflection 6.2 in
Sugg Max Load 8.2 lbf
Wind Direction Left
Wire Diameter 0.042 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.45 kg
Length 203.2 mm
Material Spring Steel
Outside Diameter 8.33 mm
Part Type Standard
Rate 0.19 N/mm
SKU 5521CS
Sugg Max Deflection 157.48 mm
Sugg Max Load 36.47 N
Wind Direction Left
Wire Diameter 1.07 mm