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I-77CS - 1.31" Spring Steel Compression Spring

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Compression spring manufactured from spring steel with 13.5 coils and closed & ground ends. This spring features an O.D. of 0.296", and an I.D. of 0.206".

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name I-77
Ends Closed & Ground
Finish None
Free Length 1.31 in
Inside Diameter 0.206 in
Material Spring Steel
Outside Diameter 0.296 in
Part Type Standard
Rate 32 lbs/in
SKU I-77CS
Solid Length 0.61 in
Suggested Max Deflection 0.35 in
Suggested Max Load 11 lbf
Total Coils 13.5
Wire Diameter 0.045 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name I-77
Ends Closed & Ground
Finish None
Free Length 33.27 mm
Inside Diameter 5.23 mm
Material Spring Steel
Outside Diameter 7.52 mm
Part Type Standard
Rate 5.6 N/mm
SKU I-77CS
Solid Length 15.49 mm
Suggested Max Deflection 8.89 mm
Suggested Max Load 48.93 N
Total Coils 13.5
Wire Diameter 1.14 mm
The compression spring I-77CS is an essential component designed for applications requiring reliable force and energy storage. Crafted from high-quality spring steel, the I-77 compression spring design exhibits exceptional tensile strength and resilience.

The I-77 design is manufactured with a free length of 1.31", with an outer diameter of 0.296", an inner diameter of 0.206", and a total of 13.5 coils, expertly designed to deliver consistent compression characteristics including a rate of 32 lbs/in.

The I-77CS 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 I-77 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.