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5581CS - 3.38 Inch High Carbon Steel Extension Springs

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

The 5581CS is a regular extension spring manufactured by Century Spring. It features a machine hook on both ends and has a zinc finish. This spring has a free length of 3.38 inches and an initial tension of 3 pounds. Made from High Carbon steel, it has a maximum deflection of 2.2 inches and a maximum load capacity of 16 pound force. With an outside diameter of 0.5 inches and a wire diameter of 0.0625 inches, this spring has a spring rate of 5.9 lbs/inch. It is designed for standard measurement units and weighs 0.0558 pounds. The 5581CS is a reliable extension spring suitable for a variety of applications.

At Century Spring, we pride ourselves on our fast shipping and extensive inventory. We understand the importance of getting the right springs quickly, which is why we offer efficient shipping services. With our significant stock of springs, including the 5581CS, customers can find the springs they need without delay. Additionally, all our springs are proudly made in the United States, ensuring high-quality craftsmanship and supporting local manufacturing. Trust Century Spring for your spring needs, and experience our commitment to fast shipping, ample stock, and American-made excellence.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 3 lb
Length 3.38 in
Material High Carbon Steel
Outside Diameter 0.5 in
Part Type Standard
Rate 5.9 lbs/in
SKU 5581CS
Sugg Max Deflection 2.2 in
Sugg Max Load 16 lbf
Wind Direction Left
Wire Diameter 0.0625 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 1.36 kg
Length 85.85 mm
Material High Carbon Steel
Outside Diameter 12.7 mm
Part Type Standard
Rate 1.03 N/mm
SKU 5581CS
Sugg Max Deflection 55.88 mm
Sugg Max Load 71.17 N
Wind Direction Left
Wire Diameter 1.59 mm