This browser is no longer supported. Upgrade to Microsoft Edge or switch to a supported browser, like Chrome, Safari, or Firefox, to explore the MW Components website.

We're sorry for the inconvenience.

5577CS - 5.56 Inch Spring Steel Extension Springs

The 5577CS is an extension spring manufactured by Century Spring. It is made from spring steel and has a zinc finish. This spring has a wire diameter of 0.045 inches, an outside diameter of 0.687 inches, and a free length of 5.56 inches. It has an initial tension of 0.4 Pound and a maximum deflection of 20 inches. The 5577CS has a spring rate of 0.22 inches per pound and a maximum load of 4.6 Pound Force. It features machine hook ends and is suitable for various applications.

At Century Spring, we pride ourselves on our fast shipping and extensive stock inventory. We understand the importance of receiving your springs quickly, which is why we strive to provide prompt and reliable shipping services. Additionally, our significant stock inventory ensures that we have a wide range of springs available for immediate shipment. We take pride in manufacturing our products in the United States, ensuring high quality and supporting local industry. 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 0.4 lb
Length 5.56 in
Material Spring Steel
Outside Diameter 0.687 in
Part Type Standard
Rate 0.22 lbs/in
SKU 5577CS
Sugg Max Deflection 20 in
Sugg Max Load 4.6 lbf
Wind Direction Left
Wire Diameter 0.045 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.18 kg
Length 141.22 mm
Material Spring Steel
Outside Diameter 17.45 mm
Part Type Standard
Rate 0.04 N/mm
SKU 5577CS
Sugg Max Deflection 508 mm
Sugg Max Load 20.46 N
Wind Direction Left
Wire Diameter 1.14 mm
Inventory Status
Low Stock
Quantity Price
1 - 49 $4.62
50 - 149 $4.39
150 - 299 $4.16
300 - 499 $3.93
500 - 749 $3.47
750 - 999 $3.01
1000+ Call for price