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B17-170CS - 3.28 Inch Spring Steel Extension Springs

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The B17-170CS 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 0.035 inches, an outside diameter of 0.375 inches, and a free length of 3.28 inches. It has an initial tension of 0.5 pound and a maximum deflection of 5.2 inches. The B17-170CS has a spring rate of 0.67 lbs/inch and a maximum load of 4 pound force. It features machine hooks at both ends for easy installation. This regular extension spring is suitable for various applications.

At Century Spring, we offer fast shipping and maintain a significant stock inventory. Our products, including the B17-170CS, 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 Machine Hook
Finish Zinc
Initial Tension 0.5 lb
Length 3.28 in
Material Spring Steel
Outside Diameter 0.375 in
Part Type Standard
Rate 0.67 lbs/in
SKU B17-170CS
Sugg Max Deflection 5.2 in
Sugg Max Load 4 lbf
Wire Diameter 0.035 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.23 kg
Length 83.31 mm
Material Spring Steel
Outside Diameter 9.53 mm
Part Type Standard
Rate 0.12 N/mm
SKU B17-170CS
Sugg Max Deflection 132.08 mm
Sugg Max Load 17.79 N
Wire Diameter 0.89 mm