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N-81CS - 0.28" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 3 coils and closed & ground ends. This spring features an O.D. of 0.531", and an I.D. of 0.437".

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

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name N-81
Ends Closed & Ground
Finish None
Free Length 0.28 in
Inside Diameter 0.437 in
Material Spring Steel
Outside Diameter 0.531 in
Part Type Standard
Rate 62 lbs/in
SKU N-81CS
Solid Length 0.14 in
Suggested Max Deflection 0.12 in
Suggested Max Load 7.6 lbf
Total Coils 3
Wire Diameter 0.047 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name N-81
Ends Closed & Ground
Finish None
Free Length 7.11 mm
Inside Diameter 11.1 mm
Material Spring Steel
Outside Diameter 13.49 mm
Part Type Standard
Rate 10.86 N/mm
SKU N-81CS
Solid Length 3.56 mm
Suggested Max Deflection 3.05 mm
Suggested Max Load 33.8 N
Total Coils 3
Wire Diameter 1.19 mm
The compression spring N-81CS is an essential component designed for applications requiring reliable force and energy storage. Crafted from high-quality spring steel, the N-81 compression spring design exhibits exceptional tensile strength and resilience.

The N-81 design is manufactured with a free length of 0.28", with an outer diameter of 0.531", an inner diameter of 0.437", and a total of 3 coils, expertly designed to deliver consistent compression characteristics including a rate of 62 lbs/in.

The N-81CS 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 N-81 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.