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5660CS - 16 Inch Spring Steel Extension Springs

The 5660CS 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 0.105 Inch and an outside diameter of 1.031 inches. It has a free length of 16 inches, an initial tension of 6 Pound, and a maximum deflection of 17 inches. The 5660CS has a maximum load of 34 Pound Force and a spring rate of 1.6 inches per pound. It features machine hook ends and is suitable for various extension spring applications that require a reliable and durable solution.

At Century Spring, we pride ourselves on offering fast shipping and maintaining a significant stock inventory. Our products, including the 5660CS, are proudly made in the United States. With our efficient shipping process and ample supply, we ensure that our customers can quickly receive the high-quality springs they need for their projects. Trust Century Spring for all your spring needs.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 6 lb
Length 16 in
Material Spring Steel
Outside Diameter 1.031 in
Part Type Standard
Rate 1.6 lbs/in
SKU 5660CS
Sugg Max Deflection 17 in
Sugg Max Load 34 lbf
Wind Direction Left
Wire Diameter 0.105 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 2.72 kg
Length 406.4 mm
Material Spring Steel
Outside Diameter 26.19 mm
Part Type Standard
Rate 0.28 N/mm
SKU 5660CS
Sugg Max Deflection 431.8 mm
Sugg Max Load 151.23 N
Wind Direction Left
Wire Diameter 2.67 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $24.45
50 - 149 $23.23
150 - 299 $22.01
300 - 499 $20.79
500 - 749 $18.34
750 - 999 $15.90
1000+ Call for price