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5273CS - 5.50 Inch High Carbon Steel Extension Springs

The 5273CS is a regular extension spring manufactured by Century Spring. It features a machine hook on both ends and has a zinc finish for added durability. This spring has a free length of 5.5 inches and an initial tension of 9 pounds. Made from High Carbon steel, it has a maximum deflection of 4.2 inches and can withstand a maximum load of 49 pound force. With an outside diameter of 1.062 inches and a wire diameter of 0.12 inches, the 5273CS has a spring rate of 9.5 inches per pound. This standard extension spring is suitable for a wide range of applications.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. Our products, including the 5273CS, are proudly made in the United States. Whether you need springs for industrial or residential use, we have you covered. With our reliable shipping and ample supply, Century Spring ensures that customers can quickly receive the springs they need for their projects.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 9 lb
Length 5.5 in
Material High Carbon Steel
Outside Diameter 1.062 in
Part Type Standard
Rate 9.5 lbs/in
SKU 5273CS
Sugg Max Deflection 4.2 in
Sugg Max Load 49 lbf
Wind Direction Left
Wire Diameter 0.12 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 4.08 kg
Length 139.7 mm
Material High Carbon Steel
Outside Diameter 26.97 mm
Part Type Standard
Rate 1.66 N/mm
SKU 5273CS
Sugg Max Deflection 106.68 mm
Sugg Max Load 217.95 N
Wind Direction Left
Wire Diameter 3.05 mm
Inventory Status
Low Stock
Quantity Price
1 - 49 $7.68
50 - 149 $7.30
150 - 299 $6.92
300 - 499 $6.53
500 - 749 $5.76
750 - 999 $5.00
1000+ Call for price