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.

B9-3CS - 3.91 Inch Spring Steel Extension Springs

Inventory Status
Estimated Lead Time

The B9-3CS is a regular extension spring manufactured by Century Spring. It is made from spring steel and features a zinc finish for added durability. This spring has a free length of 3.91 inches and an initial tension of 1 pound. With a maximum deflection of 7 inches and a maximum load capacity of 10 pounds, the B9-3CS is a reliable and versatile extension spring. Its outside diameter measures 0.75 inches, and it has a wire diameter of 0.0625 inches. The B9-3CS is designed with full loop ends, making it easy to install and secure. It is a standard-sized spring suitable for a wide range of applications.

At Century Spring, we pride ourselves on our fast shipping and extensive stock inventory. We understand the importance of promptly receiving the springs you need for your projects. That's why we offer reliable shipping services to ensure timely delivery. Additionally, all our springs, including the B9-3CS, are proudly made in the United States. We prioritize quality and craftsmanship in our manufacturing processes, guaranteeing that you receive high-quality springs for your applications. With Century Spring, you can count on efficient shipping and a vast selection of springs to meet your needs.

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Full Loop
Finish Zinc
Initial Tension 1 lb
Length 3.91 in
Material Spring Steel
Outside Diameter 0.75 in
Part Type Standard
Rate 1.3 lbs/in
SKU B9-3CS
Sugg Max Deflection 7 in
Sugg Max Load 10 lbf
Wind Direction Left
Wire Diameter 0.0625 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Full Loop
Finish Zinc
Initial Tension 0.45 kg
Length 99.31 mm
Material Spring Steel
Outside Diameter 19.05 mm
Part Type Standard
Rate 0.23 N/mm
SKU B9-3CS
Sugg Max Deflection 177.8 mm
Sugg Max Load 44.48 N
Wind Direction Left
Wire Diameter 1.59 mm