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Century Spring

71685CS - 0.5" Music Wire Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from music wire with 4 coils and closed & ground ends. This spring features an O.D. of 0.54", and an I.D. of 0.415".

NOTE: The spring rate value for compression springs with 4 coils or less is a reference value.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 71685
Ends Closed & Ground
Finish None
Free Length 0.5 in
Inside Diameter 0.415 in
Material Music Wire
Outside Diameter 0.54 in
Part Type Standard
Rate 105 lbs/in
SKU 71685CS
Solid Length 0.25 in
Suggested Max Deflection 0.22 in
Suggested Max Load 23 lbf
Total Coils 4
Wire Diameter 0.0625 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 71685
Ends Closed & Ground
Finish None
Free Length 12.7 mm
Inside Diameter 10.54 mm
Material Music Wire
Outside Diameter 13.72 mm
Part Type Standard
Rate 18.39 N/mm
SKU 71685CS
Solid Length 6.35 mm
Suggested Max Deflection 5.59 mm
Suggested Max Load 102.3 N
Total Coils 4
Wire Diameter 1.59 mm
The compression spring 71685CS is an essential component designed for applications requiring reliable force and energy storage. Crafted from high-quality music wire, the 71685 compression spring design exhibits exceptional tensile strength and resilience.

The 71685 design is manufactured with a free length of 0.5", with an outer diameter of 0.54", an inner diameter of 0.415", and a total of 4 coils, expertly designed to deliver consistent compression characteristics including a rate of 105 lbs/in.

The 71685CS compression spring is ideally suited for use in a wide range of mechanical assemblies, including but not limited to automotive suspension systems, industrial machinery, and electronic devices.

In summary, the compression spring 71685 design stands out for its superior material properties, thoughtful design, and versatility in application. It is a prime choice for engineers committed to excellence and innovation in their projects.

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