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33 - 4 Inch Spring Steel Compression Spring

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Compression spring manufactured from Spring Steel with 13.3 coils and Closed & Ground ends. This spring features an O.D. of 1.25 Inch, and an I.D. of 0.8 Inch.

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 33
Ends Closed & Ground
Finish Zinc
Free Length 4 in
Inside Diameter 0.8 in
Material Spring Steel
Outside Diameter 1.25 in
Part Type Standard
Rate 302 lbs/in
SKU 33CS
Solid Length 3 in
Suggested Max Deflection 0.79 in
Suggested Max Load 239 lbf
Total Coils 13.3
Wire Diameter 0.225 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 33
Ends Closed & Ground
Finish Zinc
Free Length 101.6 mm
Inside Diameter 20.32 mm
Material Spring Steel
Outside Diameter 31.75 mm
Part Type Standard
Rate 52.88 N/mm
SKU 33CS
Solid Length 76.2 mm
Suggested Max Deflection 20.07 mm
Suggested Max Load 1063.07 N
Total Coils 13.3
Wire Diameter 5.72 mm
The 33 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 33CS compression spring is designed with a free length of 4.13" total of 8.25 coils, and a rate of 589 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 33 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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