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12804 - 4 Inch Spring Steel Compression Spring

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Compression spring manufactured from Spring Steel with 15 coils and Closed & Ground ends. This spring features an O.D. of 1.07 Inch, and an I.D. of 0.656 Inch.

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 12804
Ends Closed & Ground
Finish Zinc
Free Length 4 in
Inside Diameter 0.656 in
Material Spring Steel
Outside Diameter 1.07 in
Part Type Standard
Rate 315 lbs/in
SKU 12804CS
Solid Length 3.1 in
Suggested Max Deflection 0.71 in
Suggested Max Load 223 lbf
Total Coils 15
Wire Diameter 0.207 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 12804
Ends Closed & Ground
Finish Zinc
Free Length 101.6 mm
Inside Diameter 16.66 mm
Material Spring Steel
Outside Diameter 27.18 mm
Part Type Standard
Rate 55.16 N/mm
SKU 12804CS
Solid Length 78.74 mm
Suggested Max Deflection 18.03 mm
Suggested Max Load 991.9 N
Total Coils 15
Wire Diameter 5.26 mm
The 12804 compression spring is engineered for optimal performance in demanding applications. Constructed from high-quality hard drawn 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 12804CS compression spring is designed with a free length of 0.86" total of 11.8 coils, and a rate of 80 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 12804 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.