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B1-50CS - 2 Inch Spring Steel Extension Springs

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Estimated Lead Time

The B1-50CS is a regular extension spring manufactured by Century Spring. Made from spring steel, this spring features a gold iridite finish. It has a free length of 2 inches and an initial tension of 5 pounds. With an outside diameter of 0.359 inches and a wire diameter of 0.057 inches, this spring has a maximum deflection of 0.66 inches and a maximum load of 18 pound force. The B1-50CS is a left-wound spring with full loops at both ends. It has a spring rate of 21 lbs/inch and is suitable for various applications that require extension springs.

At Century Spring, we pride ourselves on offering fast shipping and maintaining a significant stock inventory. Our products, including the B1-50CS, 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 Full Loop
Finish Gold Iridite
Initial Tension 5 lb
Length 2 in
Material Spring Steel
Outside Diameter 0.359 in
Part Type Standard
Rate 21 lbs/in
SKU B1-50CS
Sugg Max Deflection 0.66 in
Sugg Max Load 18 lbf
Wire Diameter 0.057 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Full Loop
Finish Gold Iridite
Initial Tension 2.27 kg
Length 50.8 mm
Material Spring Steel
Outside Diameter 9.12 mm
Part Type Standard
Rate 3.68 N/mm
SKU B1-50CS
Sugg Max Deflection 16.76 mm
Sugg Max Load 80.06 N
Wire Diameter 1.45 mm