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ZZ4-66CS - 1.75 Inch Spring Steel Extension Springs

Inventory Status
Estimated Lead Time

The ZZ4-66CS is a regular extension spring manufactured by Century Spring. It is made from spring steel and has a zinc finish. This spring has a wire diameter of 0.0625 inches, an outer diameter of 0.437 inches, and a free length of 1.75 inches. It has an initial tension of 4 Pound and a maximum deflection of 0.65 inches. The ZZ4-66CS has a spring rate of 23 lbs/inch and can withstand a maximum load of 19 Pound Force. It features machine hooks on both ends. This regular extension spring is suitable for a variety of applications.

At Century Spring, we pride ourselves on our fast shipping and extensive stock inventory. We understand the importance of timely delivery for our customers' projects. Our products, including the ZZ4-66CS, are proudly manufactured in the United States. With our reliable shipping services and abundant supply, Century Spring ensures that customers can quickly receive the high-quality springs they need to get their jobs done efficiently.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 4 lb
Length 1.75 in
Material Spring Steel
Outside Diameter 0.437 in
Part Type Standard
Rate 23 lbs/in
SKU ZZ4-66CS
Sugg Max Deflection 0.65 in
Sugg Max Load 19 lbf
Wind Direction Left
Wire Diameter 0.0625 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 1.81 kg
Length 44.45 mm
Material Spring Steel
Outside Diameter 11.1 mm
Part Type Standard
Rate 4.03 N/mm
SKU ZZ4-66CS
Sugg Max Deflection 16.51 mm
Sugg Max Load 84.51 N
Wind Direction Left
Wire Diameter 1.59 mm