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S-991CS - 2.63" 302/304 Stainless Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from 302/304 stainless steel with 5 coils and closed & ground ends. This spring features an O.D. of 1.593", and an I.D. of 1.417".

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name S-991
Ends Closed & Ground
Finish None
Free Length 2.63 in
Inside Diameter 1.417 in
Material 302/304 Stainless Steel
Outside Diameter 1.593 in
Part Type Standard
Rate 7.3 lbs/in
SKU S-991CS
Solid Length 0.44 in
Suggested Max Deflection 1.9 in
Suggested Max Load 14 lbf
Total Coils 5
Wire Diameter 0.088 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name S-991
Ends Closed & Ground
Finish None
Free Length 66.8 mm
Inside Diameter 35.99 mm
Material 302/304 Stainless Steel
Outside Diameter 40.46 mm
Part Type Standard
Rate 1.28 N/mm
SKU S-991CS
Solid Length 11.18 mm
Suggested Max Deflection 48.26 mm
Suggested Max Load 62.27 N
Total Coils 5
Wire Diameter 2.24 mm
The S-991 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-991CS compression spring is designed with a free length of 1.28" total of 5.75 coils, and a rate of 12 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-991 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.