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100 YRS

The Countdown to 100 Years of Century Spring!

Since 1927, Century Spring Corp has been the original industry-leading spring manufacturer for both stock and custom springs. Read about 100 Years of Century Spring here.

167 DAYS

ZZ4-57CS - 1.38 Inch Spring Steel Extension Springs

Inventory:           
Estimated Lead Time

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
A) Brand Century Spring
B) Sku ZZ4-57CS
C) Part Type Standard
D) Material Spring Steel
E) Wire Diameter 0.041 in
F) Outside Diameter 0.359 in
G) Length 1.38 in
H) End Type Machine Hook
I) End Position Random
J) Rate 6.8 lbs/in
K) Initial Tension 1.3 lb
L) Sugg Max Deflection 0.84 in
L) Sugg Max Load 6.9 lbf
O) Finish Zinc
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku ZZ4-57CS
C) Part Type Standard
D) Material Spring Steel
E) Wire Diameter 1.04 mm
F) Outside Diameter 9.12 mm
G) Length 35.05 mm
H) End Type Machine Hook
I) End Position Random
J) Rate 1.19 N/mm
K) Initial Tension 0.59 kg
L) Sugg Max Deflection 21.34 mm
L) Sugg Max Load 30.69 N
O) Finish Zinc