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B5-57CS - 3.28 Inch Spring Steel Extension Springs

Inventory Status
Estimated Lead Time

The B5-57CS is an extension spring manufactured by Century Spring. It is made from spring steel and has a machine hook on both ends. This spring has a free length of 3.28 inches and an outside diameter of 1 inches. It has an initial tension of 0.7 pounds and a maximum deflection of 9.6 inches. The B5-57CS has a maximum load capacity of 7.8 pounds and a spring rate of 0.75 lbs/inch. It has a wire diameter of 0.0625 inch and a shipping weight of 0.097 pound. This left-wound spring is suitable for various applications.

At Century Spring, we pride ourselves on fast shipping and maintaining a significant stock inventory. Our springs, including the B5-57CS, are proudly made in the United States. With our efficient shipping process and ample supply, Century Spring ensures that customers can quickly receive the high-quality springs they need for their projects.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 0.7 lb
Length 3.28 in
Material Spring Steel
Outside Diameter 1 in
Part Type Standard
Rate 0.75 lbs/in
SKU B5-57CS
Sugg Max Deflection 9.6 in
Sugg Max Load 7.8 lbf
Wind Direction Left
Wire Diameter 0.0625 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 0.32 kg
Length 83.31 mm
Material Spring Steel
Outside Diameter 25.4 mm
Part Type Standard
Rate 0.13 N/mm
SKU B5-57CS
Sugg Max Deflection 243.84 mm
Sugg Max Load 34.69 N
Wind Direction Left
Wire Diameter 1.59 mm