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S-571CS - 4 Inch 302/304 Stainless Steel Extension Springs

Inventory Status
Estimated Lead Time

The S-571CS is a regular extension spring manufactured by Century Spring. It is made from 302/304 Stainless Steel and has a plain finish. This spring has a wire diameter of 0.054 inches, an outside diameter of 0.375 inches, and a free length of 4 inches. It has an initial tension of 3 Pound and a maximum deflection of 2.1 inches. The S-571CS has a spring rate of 5 lbs/inch and a maximum load of 14 Pound Force. It features machine hooks at both ends, ensuring secure attachment. The S-571CS is a standard extension spring suitable for a variety of applications.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. We understand the importance of quick delivery and strive to provide prompt service to our customers. All our products, including the S-571CS, are proudly made in the United States. With our reliable shipping and ample supply, Century Spring ensures that customers can easily obtain the springs they need for their projects.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 3 lb
Length 4 in
Material 302/304 Stainless Steel
Outside Diameter 0.375 in
Part Type Standard
Rate 5 lbs/in
SKU S-571CS
Sugg Max Deflection 2.1 in
Sugg Max Load 14 lbf
Wind Direction Left
Wire Diameter 0.054 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 1.36 kg
Length 101.6 mm
Material 302/304 Stainless Steel
Outside Diameter 9.53 mm
Part Type Standard
Rate 0.88 N/mm
SKU S-571CS
Sugg Max Deflection 53.34 mm
Sugg Max Load 62.27 N
Wind Direction Left
Wire Diameter 1.37 mm