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B3-29CS - 2.25 Inch Music Wire Extension Springs

Inventory Status
Estimated Lead Time

The B3-29CS is a regular extension spring manufactured by Century Spring. It features machine hooks on both ends and is made from high-quality music wire material. This spring has a free length of 2.25 inches and an outside diameter of 0.312 inches. It has an initial tension of 0.4 pounds and can deflect up to a maximum of 4.8 inches. With a spring rate of 0.82 lbs/inch, it can withstand a maximum load of 4.3 pounds. The B3-29CS is a left-wound spring with a wire diameter of 0.03 inches. It is a reliable and durable option for various extension spring applications.

At Century Spring, we take pride in offering fast shipping and maintaining a significant stock inventory. Our commitment to customer satisfaction means that you can trust us to deliver your springs promptly. Additionally, all our products, including the B3-29CS, are proudly made in the United States. With our extensive selection and efficient shipping, Century Spring is your go-to source for high-quality springs for your projects.

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 0.4 lb
Length 2.25 in
Material Music Wire
Outside Diameter 0.312 in
Part Type Standard
Rate 0.82 lbs/in
SKU B3-29CS
Sugg Max Deflection 4.8 in
Sugg Max Load 4.3 lbf
Wind Direction Left
Wire Diameter 0.03 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 0.18 kg
Length 57.15 mm
Material Music Wire
Outside Diameter 7.92 mm
Part Type Standard
Rate 0.14 N/mm
SKU B3-29CS
Sugg Max Deflection 121.92 mm
Sugg Max Load 19.13 N
Wind Direction Left
Wire Diameter 0.76 mm