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4033CS - 28.50 Inch Spring Steel Extension Springs

The 4033CS is a regular extension spring manufactured by Century Spring. This spring is made from spring steel and has a zinc finish. It has a wire diameter of 0.072 Inch and an outside diameter of 0.578 inches. The free length of the spring is 28.5 inches, and it has an initial tension of 4 pounds. The maximum deflection is 22 inches, and the maximum load it can handle is 21 pounds of force. The spring rate is 0.78 inches per pound. The 4033CS is a left-wind spring with full loop ends. It is a standard extension spring suitable for various applications.

At Century Spring, we pride ourselves on our fast shipping and extensive stock inventory. We understand the importance of timely delivery, and our efficient shipping ensures that customers receive their springs quickly. Moreover, we maintain a significant stock inventory to ensure that our customers have access to the springs they need when they need them. As a company based in the United States, we are proud to manufacture our products locally, ensuring high-quality standards and supporting the domestic economy. With Century Spring, you can trust that you'll receive top-notch products and excellent service.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Full Loop
Finish Zinc
Initial Tension 4 lb
Length 28.5 in
Material Spring Steel
Outside Diameter 0.578 in
Part Type Standard
Rate 0.78 lbs/in
SKU 4033CS
Sugg Max Deflection 22 in
Sugg Max Load 21 lbf
Wind Direction Left
Wire Diameter 0.072 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Full Loop
Finish Zinc
Initial Tension 1.81 kg
Length 723.9 mm
Material Spring Steel
Outside Diameter 14.68 mm
Part Type Standard
Rate 0.14 N/mm
SKU 4033CS
Sugg Max Deflection 558.8 mm
Sugg Max Load 93.41 N
Wind Direction Left
Wire Diameter 1.83 mm
Inventory Status
Low Stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $22.22
50 - 149 $21.11
150 - 299 $20.00
300 - 499 $18.89
500 - 749 $16.67
750 - 999 $14.45
1000+ Call for price