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.

100 YRS

The Countdown to 100 Years of Century Spring!

Since 1927, Century Spring Corp has been the original industry-leading spring manufacturer for both stock and custom springs. Read about 100 Years of Century Spring here.

167 DAYS

S-571CS - 4 Inch 302/304 Stainless Steel Extension Springs

Inventory:           
Estimated Lead Time

The S-571CS is a regular extension spring manufactured by Century Spring. It is made from 302/304 Stainless Steel and has a plain finish. This spring has a wire diameter of 0.054 inches, an outside diameter of 0.375 inches, and a free length of 4 inches. It has an initial tension of 3 Pound and a maximum deflection of 2.1 inches. The S-571CS has a spring rate of 5 lbs/inch and a maximum load of 14 Pound Force. It features machine hooks at both ends, ensuring secure attachment. The S-571CS is a standard extension spring suitable for a variety of applications.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. We understand the importance of quick delivery and strive to provide prompt service to our customers. All our products, including the S-571CS, are proudly made in the United States. With our reliable shipping and ample supply, Century Spring ensures that customers can easily obtain the springs they need for their projects.

Download CAD
Unit System
Specs (in standard)
Label Value
A) Brand Century Spring
B) Sku S-571CS
C) Part Type Standard
D) Material 302/304 Stainless Steel
E) Wire Diameter 0.054 in
F) Outside Diameter 0.375 in
G) Length 4 in
H) End Type Machine Hook
I) End Position Random
J) Rate 5 lbs/in
K) Initial Tension 3 lb
L) Sugg Max Deflection 2.1 in
L) Sugg Max Load 14 lbf
O) Finish None
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku S-571CS
C) Part Type Standard
D) Material 302/304 Stainless Steel
E) Wire Diameter 1.37 mm
F) Outside Diameter 9.53 mm
G) Length 101.6 mm
H) End Type Machine Hook
I) End Position Random
J) Rate 0.88 N/mm
K) Initial Tension 1.36 kg
L) Sugg Max Deflection 53.34 mm
L) Sugg Max Load 62.27 N
O) Finish None