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5186CS - 4 Inch Music Wire Extension Springs

The 5186CS is a regular extension spring manufactured by Century Spring. It is made from Music Wire and has a zinc finish. This spring has a wire diameter of 0.019 inches, an outer diameter of 0.14 inches, and a free length of 4 inches. It has an initial tension of 0.3 Pound and a maximum deflection of 4.3 inches. The 5186CS has a spring rate of 0.53 inches per pound and a maximum load of 2.6 Pound Force. It is a full loop spring, meaning both ends are closed. The 5186CS is a standard extension spring suitable for various applications.

At Century Spring, we pride ourselves on our fast shipping and extensive stock inventory. Our products, including the 5186CS, are made in the United States. With our efficient shipping process and ample supply, Century Spring ensures that customers can quickly receive the springs they need for their projects.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Full Loop
Finish Zinc
Initial Tension 0.3 lb
Length 4 in
Material Music Wire
Outside Diameter 0.14 in
Part Type Standard
Rate 0.53 lbs/in
SKU 5186CS
Sugg Max Deflection 4.3 in
Sugg Max Load 2.6 lbf
Wind Direction Left
Wire Diameter 0.019 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Full Loop
Finish Zinc
Initial Tension 0.14 kg
Length 101.6 mm
Material Music Wire
Outside Diameter 3.56 mm
Part Type Standard
Rate 0.09 N/mm
SKU 5186CS
Sugg Max Deflection 109.22 mm
Sugg Max Load 11.56 N
Wind Direction Left
Wire Diameter 0.48 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $3.25
50 - 149 $3.09
150 - 299 $2.93
300 - 499 $2.77
500 - 749 $2.44
750 - 999 $2.12
1000+ Call for price