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5303CS - 4 Inch Spring Steel Extension Springs

The 5303CS is a regular extension spring manufactured by Century Spring. It is made from spring steel and has a natural finish. This spring has a wire diameter of 0.12 inches, an outer diameter of 1 inches, and a free length of 4 inches. It has an initial tension of 11 Pound and a maximum deflection of 2 inches. The 5303CS is a left-wound spring with full loop ends. It has a spring rate of 21 inches per pound and a maximum load of 52 Pound Force. This standard extension spring is suitable for a variety of applications.

At Century Spring, we pride ourselves on offering fast shipping and maintaining a significant stock inventory. Our products, including the 5303CS, are proudly made in the United States. With our efficient 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 Full Loop
Finish None
Initial Tension 11 lb
Length 4 in
Material Spring Steel
Outside Diameter 1 in
Part Type Standard
Rate 21 lbs/in
SKU 5303CS
Sugg Max Deflection 2 in
Sugg Max Load 52 lbf
Wind Direction Left
Wire Diameter 0.12 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Full Loop
Finish None
Initial Tension 4.99 kg
Length 101.6 mm
Material Spring Steel
Outside Diameter 25.4 mm
Part Type Standard
Rate 3.68 N/mm
SKU 5303CS
Sugg Max Deflection 50.8 mm
Sugg Max Load 231.3 N
Wind Direction Left
Wire Diameter 3.05 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours

Pricing reflects the base un-configured part price. Final per piece price including configured options will be calculated once a quantity is entered in the field above.

Quantity Price
1 - 49 $6.27
50 - 149 $5.96
150 - 299 $5.65
300 - 499 $5.33
500 - 749 $4.71
750 - 999 $4.08
1000+ Call for price