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ZZ4-7CS - 1.69 Inch 302/304 Stainless Steel Extension Springs

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The ZZ4-7CS is a regular extension spring manufactured by Century Spring. It is made from 302/304 stainless steel with a wire diameter of 0.026 inch and an outside diameter of 0.25 inches. This spring has a free length of 1.69 inch and a maximum deflection of 1.9 inches. It has an initial tension of 0.3 pound and a maximum load of 2.4 pound force. The ZZ4-7CS has a spring rate of 1.1 lbs/inch and features machine hook ends. This extension spring is ideal for various applications.

At Century Spring, we offer fast shipping and maintain a significant stock inventory. Our products, including the ZZ4-7CS, are proudly made in the United States. With our reliable shipping and ample supply, Century Spring ensures that customers can quickly receive 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 0.3 lb
Length 1.69 in
Material 302/304 Stainless Steel
Outside Diameter 0.25 in
Part Type Standard
Rate 1.1 lbs/in
SKU ZZ4-7CS
Sugg Max Deflection 1.9 in
Sugg Max Load 2.4 lbf
Wire Diameter 0.026 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 0.14 kg
Length 42.93 mm
Material 302/304 Stainless Steel
Outside Diameter 6.35 mm
Part Type Standard
Rate 0.19 N/mm
SKU ZZ4-7CS
Sugg Max Deflection 48.26 mm
Sugg Max Load 10.68 N
Wire Diameter 0.66 mm