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81111CS - 4.50 Inch Music Wire Extension Springs

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The 81111CS is a regular extension spring manufactured by Century Spring. It is made from Music Wire and has no finish. This spring has a wire diameter of 0.115 inches, an outside diameter of 1.25 inches, and a free length of 4.5 inches. It has an initial tension of 4 Pound and a maximum deflection of 4.8 inches. The 81111CS has a maximum load of 47 Pound Force and features full loop ends. It is a standard extension spring suitable for various applications.

At Century Spring, we offer fast shipping and maintain a significant stock inventory. Our products, including the 81111CS, are proudly made in the United States. With our reliable shipping and ample supply, Century Spring ensures that customers can quickly receive the springs they need for their projects.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Full Loop
Finish None
Initial Tension 4 lb
Length 4.5 in
Material Music Wire
Outside Diameter 1.25 in
Part Type Standard
Rate 8.8 lbs/in
SKU 81111CS
Sugg Max Deflection 4.8 in
Sugg Max Load 47 lbf
Wire Diameter 0.115 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Full Loop
Finish None
Initial Tension 1.81 kg
Length 114.3 mm
Material Music Wire
Outside Diameter 31.75 mm
Part Type Standard
Rate 1.54 N/mm
SKU 81111CS
Sugg Max Deflection 121.92 mm
Sugg Max Load 209.06 N
Wire Diameter 2.92 mm