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12345CS - 3.91 Inch Spring Steel Extension Springs

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

The 12345CS is a regular extension spring by Century Spring. It is made from Spring Steel and has no finish. This spring has a wire diameter of 0.04 inches, an outer diameter of 0.312 inches, and a free length of 3.91 Inches. It has an initial tension of 1 Pound and a maximum deflection of 3 Inches. The 12345CS has a spring rate of 2 inches per pound and can handle a maximum load of 7.5 Pound Force. It has machine hook ends. The 12345CS is a standard extension spring suitable for various applications.

At Century Spring, we offer fast shipping and maintain a significant stock inventory. Our products, including the 12345CS, 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.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 1 lb
Length 3.91 in
Material Spring Steel
Outside Diameter 0.312 in
Part Type Standard
Rate 2 lbs/in
SKU 12345CS
Sugg Max Deflection 3 in
Sugg Max Load 7.5 lbf
Wind Direction Left
Wire Diameter 0.04 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 0.45 kg
Length 99.31 mm
Material Spring Steel
Outside Diameter 7.92 mm
Part Type Standard
Rate 0.35 N/mm
SKU 12345CS
Sugg Max Deflection 76.2 mm
Sugg Max Load 33.36 N
Wind Direction Left
Wire Diameter 1.02 mm