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S-289CS - 3.75" 302/304 Stainless Steel Compression Spring

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Compression spring manufactured from 302/304 stainless steel with 7.6 coils and closed ends. This spring features an O.D. of 1.375", and an I.D. of 1.251".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name S-289
Ends Closed
Finish None
Free Length 3.75 in
Inside Diameter 1.251 in
Material 302/304 Stainless Steel
Outside Diameter 1.375 in
Part Type Standard
Rate 1.5 lbs/in
SKU S-289CS
Solid Length 0.539 in
Suggested Max Deflection 3.211 in
Suggested Max Load 4.8 lbf
Total Coils 7.6
Wire Diameter 0.0625 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name S-289
Ends Closed
Finish None
Free Length 95.25 mm
Inside Diameter 31.78 mm
Material 302/304 Stainless Steel
Outside Diameter 34.93 mm
Part Type Standard
Rate 0.26 N/mm
SKU S-289CS
Solid Length 13.69 mm
Suggested Max Deflection 81.56 mm
Suggested Max Load 21.35 N
Total Coils 7.6
Wire Diameter 1.59 mm
The S-289 compression spring is engineered for optimal performance in demanding applications. Constructed from high-quality 302/304 stainless steel and designed with precision and durability in mind, this spring is an essential component for a variety of mechanical systems where reliable force and resilience are paramount.

The S-289CS compression spring is designed with a free length of 2.13" total of 6.5 coils, and a rate of 2.5 lbs/in providing a balanced combination of flexibility and strength. This spring coil, and its closed & ground end configuration allows for efficient energy storage and release, making it suitable for applications requiring precise motion control.

The S-289 spring design is ideal for use in industrial machinery, automotive systems, and various mechanical assemblies where reliable force application is crucial. Its robust construction and thoughtful design make it a dependable choice for engineers seeking a high-performance spring solution.

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