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ZZ3-40CS - 1.78 Inch Music Wire Extension Springs

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The ZZ3-40CS is a regular extension spring manufactured by Century Spring. It is made from Music Wire and features a zinc finish. This spring has a wire diameter of 0.031 inches, an outer diameter of 0.234 inches, and a free length of 1.78 inches. It has an initial tension of 0.9 Pound and a maximum deflection of 1.5 inches. The ZZ3-40CS has a spring rate of 3.6 lbs/inch and a maximum load of 6.5 Pound Force. It has side hook ends and is suitable for a variety of applications.

At Century Spring, we understand the importance of fast shipping and maintaining a significant stock inventory. That's why we are proud to offer both. Our products, including the ZZ3-40CS, are made right here in the United States. With our reliable shipping and ample supply, Century Spring ensures that customers can quickly receive the high-quality springs they need for their projects.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Side Hook
Finish Zinc
Initial Tension 0.9 lb
Length 1.78 in
Material Music Wire
Outside Diameter 0.234 in
Part Type Standard
Rate 3.6 lbs/in
SKU ZZ3-40CS
Sugg Max Deflection 1.5 in
Sugg Max Load 6.5 lbf
Wire Diameter 0.031 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Side Hook
Finish Zinc
Initial Tension 0.41 kg
Length 45.21 mm
Material Music Wire
Outside Diameter 5.94 mm
Part Type Standard
Rate 0.63 N/mm
SKU ZZ3-40CS
Sugg Max Deflection 38.1 mm
Sugg Max Load 28.91 N
Wire Diameter 0.79 mm