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5665CS - 1.75 Inch Spring Steel Extension Springs

The 5665CS 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 inches, an outside diameter of 0.734 inches, and a free length of 1.75 inches. It has an initial tension of 12 Pound and a maximum deflection of 0.41 inches. The 5665CS has a spring rate of 94 inches per pound and a maximum load of 50 Pound Force. It features machine hook ends and a left wind direction. The 5665CS is a standard extension spring suitable for a variety of applications.

At Century Spring, we understand the importance of fast shipping and maintaining a significant stock inventory. We are proud to manufacture our products, including the 5665CS, in the United States. With our efficient shipping process and ample supply, we ensure that our customers can quickly receive the springs they need for their projects. Choose Century Spring for reliable service and high-quality springs for your applications.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 12 lb
Length 1.75 in
Material Spring Steel
Outside Diameter 0.734 in
Part Type Standard
Rate 94 lbs/in
SKU 5665CS
Sugg Max Deflection 0.41 in
Sugg Max Load 50 lbf
Wind Direction Left
Wire Diameter 0.105 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 5.44 kg
Length 44.45 mm
Material Spring Steel
Outside Diameter 18.64 mm
Part Type Standard
Rate 16.46 N/mm
SKU 5665CS
Sugg Max Deflection 10.41 mm
Sugg Max Load 222.4 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 $2.63
50 - 149 $2.50
150 - 299 $2.37
300 - 499 $2.24
500 - 749 $1.98
750 - 999 $1.71
1000+ Call for price