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S-418CS - 3" 302/304 Stainless Steel Compression Spring

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Compression spring manufactured from 302/304 stainless steel with 3.7 coils and closed ends. This spring features an O.D. of 2.625", and an I.D. of 2.433".

NOTE: The spring rate value for compression springs with 4 coils or less is a reference value.

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name S-418
Ends Closed
Finish None
Free Length 3 in
Inside Diameter 2.433 in
Material 302/304 Stainless Steel
Outside Diameter 2.625 in
Part Type Standard
Rate 3.3 lbs/in
SKU S-418CS
Solid Length 0.444 in
Suggested Max Load 8.4 lbf
Total Coils 3.7
Wire Diameter 0.095 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name S-418
Ends Closed
Finish None
Free Length 76.2 mm
Inside Diameter 61.8 mm
Material 302/304 Stainless Steel
Outside Diameter 66.68 mm
Part Type Standard
Rate 0.58 N/mm
SKU S-418CS
Solid Length 11.28 mm
Suggested Max Load 37.36 N
Total Coils 3.7
Wire Diameter 2.41 mm
The S-418 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-418CS compression spring is designed with a free length of 2" total of 11.8 coils, and a rate of 33 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-418 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.