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Century Spring

3946CS - 4.88" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 66 coils and closed & ground ends. This spring features an O.D. of 0.25", and an I.D. of 0.18".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 3946
Ends Closed & Ground
Finish Gold Iridite
Free Length 4.88 in
Inside Diameter 0.18 in
Material Spring Steel
Outside Diameter 0.25 in
Part Type Standard
Rate 3.4 lbs/in
SKU 3946CS
Solid Length 2.31 in
Suggested Max Deflection 1.9 in
Suggested Max Load 6.4 lbf
Total Coils 66
Wire Diameter 0.035 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 3946
Ends Closed & Ground
Finish Gold Iridite
Free Length 123.95 mm
Inside Diameter 4.57 mm
Material Spring Steel
Outside Diameter 6.35 mm
Part Type Standard
Rate 0.6 N/mm
SKU 3946CS
Solid Length 58.67 mm
Suggested Max Deflection 48.26 mm
Suggested Max Load 28.47 N
Total Coils 66
Wire Diameter 0.89 mm
The 3946 compression spring is engineered for optimal performance in demanding applications. Constructed from high-quality spring 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 3946CS compression spring is designed with a free length of 2.19" total of 11 coils, and a rate of 3.1 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 3946 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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