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366 - 3 Inch Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from Spring Steel with 9.5 coils and Closed & Ground ends. This spring features an O.D. of 1.125 Inch, and an I.D. of 0.915 Inch.

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 366
Ends Closed & Ground
Finish Zinc
Free Length 3 in
Inside Diameter 0.915 in
Material Spring Steel
Outside Diameter 1.125 in
Part Type Standard
Rate 22 lbs/in
SKU 366CS
Solid Length 1 in
Suggested Max Deflection 1.5 in
Suggested Max Load 34 lbf
Total Coils 9.5
Wire Diameter 0.105 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 366
Ends Closed & Ground
Finish Zinc
Free Length 76.2 mm
Inside Diameter 23.24 mm
Material Spring Steel
Outside Diameter 28.58 mm
Part Type Standard
Rate 3.85 N/mm
SKU 366CS
Solid Length 25.4 mm
Suggested Max Deflection 38.1 mm
Suggested Max Load 151.23 N
Total Coils 9.5
Wire Diameter 2.67 mm
The 366 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 366CS compression spring is designed with a free length of 0.44" total of 5 coils, and a rate of 64 lbs/in providing a balanced combination of flexibility and strength. This spring coil, and its closed end configuration allows for efficient energy storage and release, making it suitable for applications requiring precise motion control.

The 366 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.