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81005CS - 4 Inch Music Wire Extension Springs

Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours

The 81005CS is a regular extension spring manufactured by Century Spring. It is made from high-quality music wire and has a sleek, unfinished appearance. This spring has a wire diameter of 0.115 inches, an outer diameter of 1 inches, and a free length of 4 inches. It has an initial tension of 5 pounds and a maximum deflection of 2.9 inches. The 81005CS has a spring rate of 18 inch-pounds and can support a maximum load of 58 pounds. It features full-loop ends, providing secure attachment points. This regular extension spring is perfect for a wide range of applications.

Century Spring takes pride in offering fast shipping and maintaining an extensive stock inventory. We understand the importance of timely delivery, which is why we strive to ship our products quickly. Additionally, our commitment to keeping a significant inventory ensures that customers can find the springs they need without delay. As a US-based company, we are proud to manufacture our springs right here in the United States. When you choose Century Spring, you can trust in our reliable shipping, abundant supply, and American-made quality.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Full Loop
Finish None
Initial Tension 5 lb
Length 4 in
Material Music Wire
Outside Diameter 1 in
Part Type Standard
Rate 18 lbs/in
SKU 81005CS
Sugg Max Deflection 2.9 in
Sugg Max Load 58 lbf
Wind Direction Left
Wire Diameter 0.115 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Full Loop
Finish None
Initial Tension 2.27 kg
Length 101.6 mm
Material Music Wire
Outside Diameter 25.4 mm
Part Type Standard
Rate 3.15 N/mm
SKU 81005CS
Sugg Max Deflection 73.66 mm
Sugg Max Load 257.98 N
Wind Direction Left
Wire Diameter 2.92 mm