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B3-28CS - 1.25 Inch Spring Steel Extension Springs

Inventory Status
Estimated Lead Time

The B3-28CS is a regular extension spring manufactured by Century Spring. This spring is made from high-quality spring steel and has a durable finish. It has a free length of 1.25 inches and an outside diameter of 0.437 inches. The wire diameter is 0.05 inches, and it has a maximum deflection of 0.8 inches. The B3-28CS has an initial tension of 2 pounds and a maximum load of 9.6 pound force. It features full loop ends and a spring rate of 10 lbs/inch. This extension spring is designed to provide reliable and consistent performance for a variety of applications.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. We understand the urgency of your projects and strive to deliver your springs quickly and efficiently. Our products, including the B3-28CS, are proudly made in the United States, ensuring superior quality and craftsmanship. With our reliable shipping and ample supply, Century Spring is your trusted partner for all your spring needs.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Full Loop
Finish None
Initial Tension 2 lb
Length 1.25 in
Material Spring Steel
Outside Diameter 0.437 in
Part Type Standard
Rate 10 lbs/in
SKU B3-28CS
Sugg Max Deflection 0.8 in
Sugg Max Load 9.6 lbf
Wind Direction Left
Wire Diameter 0.05 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Full Loop
Finish None
Initial Tension 0.91 kg
Length 31.75 mm
Material Spring Steel
Outside Diameter 11.1 mm
Part Type Standard
Rate 1.75 N/mm
SKU B3-28CS
Sugg Max Deflection 20.32 mm
Sugg Max Load 42.7 N
Wind Direction Left
Wire Diameter 1.27 mm