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ZZ1-21CS - 0.91 Inch 302/304 Stainless Steel Extension Springs

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The ZZ1-21CS 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 0.032 inches, an outside diameter of 0.25 inches, and a free length of 0.91 inches. It has an initial tension of 0.8 Pound and a maximum deflection of 0.45 inches. The ZZ1-21CS has a spring rate of 8.4 lbs/inch and a maximum load of 4.7 Pound Force. It features machine hook ends and left wind direction. This regular extension spring is suitable for a wide range of applications.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. We understand the importance of timely delivery and maintaining a large selection of springs for our customers. All our products, including the ZZ1-21CS, are proudly made in the United States. With our efficient shipping process and ample supply, Century Spring ensures that you can quickly receive the 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 0.8 lb
Length 0.91 in
Material 302/304 Stainless Steel
Outside Diameter 0.25 in
Part Type Standard
Rate 8.4 lbs/in
SKU ZZ1-21CS
Sugg Max Deflection 0.45 in
Sugg Max Load 4.7 lbf
Wire Diameter 0.032 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 0.36 kg
Length 23.11 mm
Material 302/304 Stainless Steel
Outside Diameter 6.35 mm
Part Type Standard
Rate 1.47 N/mm
SKU ZZ1-21CS
Sugg Max Deflection 11.43 mm
Sugg Max Load 20.91 N
Wire Diameter 0.81 mm