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ZZ4-57CS - 1.38 Inch Spring Steel Extension Springs

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The ZZ4-57CS is a regular extension spring manufactured by Century Spring. It is made from spring steel and features a zinc finish. This spring has a wire diameter of 0.041 Inch and an outside diameter of 0.359 inches. Its free length is 1.38 Inch and it has an initial tension of 1.3 Pound. The ZZ4-57CS has a maximum deflection of 0.84 Inch and a maximum load of 6.9 Pound Force. It is designed with machine hook ends and has a spring rate of 6.8 lbs/inch. With its high-quality materials and precise measurements, the ZZ4-57CS is a reliable extension spring for various applications.

At Century Spring, we prioritize fast shipping and maintain a significant stock inventory. This means that you can count on us to deliver your springs promptly, ensuring minimal downtime for your projects. Additionally, all our products, including the ZZ4-57CS, are proudly made in the United States. We take pride in manufacturing high-quality springs that meet the highest standards of craftsmanship. Trust Century Spring for your spring needs, and experience our commitment to excellence and customer satisfaction.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 1.3 lb
Length 1.38 in
Material Spring Steel
Outside Diameter 0.359 in
Part Type Standard
Rate 6.8 lbs/in
SKU ZZ4-57CS
Sugg Max Deflection 0.84 in
Sugg Max Load 6.9 lbf
Wire Diameter 0.041 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.59 kg
Length 35.05 mm
Material Spring Steel
Outside Diameter 9.12 mm
Part Type Standard
Rate 1.19 N/mm
SKU ZZ4-57CS
Sugg Max Deflection 21.34 mm
Sugg Max Load 30.69 N
Wire Diameter 1.04 mm