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

B5-29CS - 3.50 Inch Spring Steel Extension Springs

Inventory:           
Estimated Lead Time

The B5-29CS is an extension spring manufactured by Century Spring. It is made from spring steel, ensuring durability and strength. This spring has a free length of 3.5 inches and an outside diameter of 0.656 inches. With an initial tension of 0.9 pound, it provides the necessary force for extension. The B5-29CS has a maximum deflection of 6.4 inches and a maximum load capacity of 7.9 pound force. Its wire diameter measures 0.054 inches. Designed with a left wind direction and machine hooks on both ends, this extension spring is suitable for a wide range of applications.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. You can rely on us to promptly deliver the B5-29CS and other springs to meet your project needs. Our products are proudly made in the United States, ensuring quality and craftsmanship. With our efficient shipping and ample supply, Century Spring is committed to providing exceptional service and reliable springs for your projects.

Download CAD
Unit System
Specs (in standard)
Label Value
A) Brand Century Spring
B) Sku B5-29CS
C) Part Type Standard
D) Material Spring Steel
E) Wire Diameter 0.054 in
F) Outside Diameter 0.656 in
G) Length 3.5 in
H) End Type Machine Hook
I) End Position Random
J) Rate 1.1 lbs/in
K) Initial Tension 0.9 lb
L) Sugg Max Deflection 6.4 in
L) Sugg Max Load 7.9 lbf
O) Finish None
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku B5-29CS
C) Part Type Standard
D) Material Spring Steel
E) Wire Diameter 1.37 mm
F) Outside Diameter 16.66 mm
G) Length 88.9 mm
H) End Type Machine Hook
I) End Position Random
J) Rate 0.19 N/mm
K) Initial Tension 0.41 kg
L) Sugg Max Deflection 162.56 mm
L) Sugg Max Load 35.14 N
O) Finish None