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B5-31CS - 2.03 Inch Spring Steel Extension Springs

Inventory Status
Estimated Lead Time

The B5-31CS is a regular extension spring manufactured by Century Spring. It is made from spring steel and has a gold iridite finish. This spring has a wire diameter of 0.04 inches, an outside diameter of 0.359 inches, and a free length of 2.03 inches. It has an initial tension of 1 Pound and a maximum deflection of 1.9 inches. The B5-31CS has a spring rate of 2.8 lbs/inch and a maximum load of 6.4 Pound Force. It features machine hooks on both ends for easy installation. This extension spring is suitable for a variety of applications.

At Century Spring, we pride ourselves on fast shipping and maintaining a significant stock inventory. We understand the importance of timely delivery, which is why we offer efficient shipping options to ensure our customers receive their springs quickly. Additionally, we are committed to supporting American manufacturing. All of our springs, including the B5-31CS, are proudly made in the United States. With our reliable shipping and ample supply, Century Spring is your go-to source for high-quality springs for your projects.

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Gold Iridite
Initial Tension 1 lb
Length 2.03 in
Material Spring Steel
Outside Diameter 0.359 in
Part Type Standard
Rate 2.8 lbs/in
SKU B5-31CS
Sugg Max Deflection 1.9 in
Sugg Max Load 6.4 lbf
Wind Direction Left
Wire Diameter 0.04 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Gold Iridite
Initial Tension 0.45 kg
Length 51.56 mm
Material Spring Steel
Outside Diameter 9.12 mm
Part Type Standard
Rate 0.49 N/mm
SKU B5-31CS
Sugg Max Deflection 48.26 mm
Sugg Max Load 28.47 N
Wind Direction Left
Wire Diameter 1.02 mm