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12389CS - 4 Inch Spring Steel Extension Springs

Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours

The 12389CS 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 0.075 inches, an outer diameter of 0.531 inches, and a free length of 4 inches. It has an initial tension of 6 Pound and a maximum deflection of 2 inches. The 12389CS has a spring rate of 10 inches per pound and can support a maximum load of 27 Pound Force. It features machine hook ends and is designed for various extension spring applications.

At Century Spring, we prioritize fast shipping and maintain a significant stock inventory. We take pride in manufacturing our springs in the United States. With our efficient shipping and ample supply, we ensure that customers receive their springs promptly. Whether you need the 12389CS or any other spring, Century Spring is here to meet your needs.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 6 lb
Length 4 in
Material Spring Steel
Outside Diameter 0.531 in
Part Type Standard
Rate 10 lbs/in
SKU 12389CS
Sugg Max Deflection 2 in
Sugg Max Load 27 lbf
Wind Direction Left
Wire Diameter 0.075 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 2.72 kg
Length 101.6 mm
Material Spring Steel
Outside Diameter 13.49 mm
Part Type Standard
Rate 1.75 N/mm
SKU 12389CS
Sugg Max Deflection 50.8 mm
Sugg Max Load 120.1 N
Wind Direction Left
Wire Diameter 1.91 mm