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613CS - 10.30 Inch High Carbon Steel Extension Springs

Inventory Status
Limited Availability

The 613CS is a regular extension spring manufactured by Century Spring. It features a machine hook at each end and is made from High Carbon steel with a zinc finish. This spring has a free length of 10.3 inches and an initial tension of 85 pounds. It has a maximum deflection of 2.2 inches and can handle a maximum load of 255 pound force. With an outside diameter of 1.312 inches and a wire diameter of 0.225 inches, the 613CS has a spring rate of 75 inches per pound. This standard measurement unit spring is designed to wind in the left direction.

Century Spring takes pride in providing fast shipping and maintaining a significant stock inventory. We are pleased to offer our customers a wide range of springs, including the 613CS, all made in the United States. With our efficient shipping process and ample supply, Century Spring ensures that you receive the springs you need promptly for your projects.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 85 lb
Length 10.3 in
Material High Carbon Steel
Outside Diameter 1.312 in
Part Type Standard
Rate 75 lbs/in
SKU 613CS
Sugg Max Deflection 2.2 in
Sugg Max Load 255 lbf
Wind Direction Left
Wire Diameter 0.225 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 38.55 kg
Length 261.62 mm
Material High Carbon Steel
Outside Diameter 33.32 mm
Part Type Standard
Rate 13.13 N/mm
SKU 613CS
Sugg Max Deflection 55.88 mm
Sugg Max Load 1134.24 N
Wind Direction Left
Wire Diameter 5.72 mm