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S-550CS - 1.38 Inch 302/304 Stainless Steel Extension Springs

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The S-550CS is a regular extension spring manufactured by Century Spring. It is made from 302/304 Stainless Steel and has a natural finish. This spring has a wire diameter of 0.041 inches, an outside diameter of 0.312 inches, and a free length of 1.38 inches. It has an initial tension of 1 Pound and a maximum deflection of 0.84 inches. The S-550CS has a spring rate of 7.4 lbs/inch and a maximum load of 7.6 Pound Force. It is equipped with machine hooks on both ends, allowing for easy installation. The S-550CS is a reliable extension spring suitable for a variety of applications.

Century Spring offers fast shipping and maintains a significant stock inventory. We take pride in manufacturing our products, including the S-550CS, in the United States. With our efficient shipping process and ample supply, Century Spring ensures that you can quickly receive the high-quality springs you need for your projects.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 1 lb
Length 1.38 in
Material 302/304 Stainless Steel
Outside Diameter 0.312 in
Part Type Standard
Rate 7.4 lbs/in
SKU S-550CS
Sugg Max Deflection 0.84 in
Sugg Max Load 7.6 lbf
Wire Diameter 0.041 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 0.45 kg
Length 35.05 mm
Material 302/304 Stainless Steel
Outside Diameter 7.92 mm
Part Type Standard
Rate 1.3 N/mm
SKU S-550CS
Sugg Max Deflection 21.34 mm
Sugg Max Load 33.8 N
Wire Diameter 1.04 mm