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B5-40CS - 2.59 Inch Spring Steel Extension Springs

Inventory Status
Estimated Lead Time

The B5-40CS is a regular extension spring manufactured by Century Spring. It is made from spring steel and has a natural finish. This spring has a wire diameter of 0.045 inches, an outside diameter of 0.359 inches, and a free length of 2.59 inches. It has an initial tension of 2 Pound and a maximum deflection of 2 inches. The B5-40CS has a spring rate of 3.9 lbs/inch and a maximum load of 9.2 Pound Force. It features a left wind direction and crossover hook ends. This regular extension spring is suitable for a variety of applications.

At Century Spring, we are proud to offer fast shipping and maintain a significant stock inventory. Our products, including the B5-40CS, 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.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Crossover Hook
Finish None
Initial Tension 2 lb
Length 2.59 in
Material Spring Steel
Outside Diameter 0.359 in
Part Type Standard
Rate 3.9 lbs/in
SKU B5-40CS
Sugg Max Deflection 2 in
Sugg Max Load 9.2 lbf
Wind Direction Left
Wire Diameter 0.045 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Crossover Hook
Finish None
Initial Tension 0.91 kg
Length 65.79 mm
Material Spring Steel
Outside Diameter 9.12 mm
Part Type Standard
Rate 0.68 N/mm
SKU B5-40CS
Sugg Max Deflection 50.8 mm
Sugg Max Load 40.92 N
Wind Direction Left
Wire Diameter 1.14 mm