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S-1166CS - 3.75" 302/304 Stainless Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from 302/304 stainless steel with 10.5 coils and closed & ground ends. This spring features an O.D. of 1.25", and an I.D. of 1.01".

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name S-1166
Ends Closed & Ground
Finish None
Free Length 3.75 in
Inside Diameter 1.01 in
Material 302/304 Stainless Steel
Outside Diameter 1.25 in
Part Type Standard
Rate 21 lbs/in
SKU S-1166CS
Solid Length 1.26 in
Suggested Max Deflection 1.9 in
Suggested Max Load 40 lbf
Total Coils 10.5
Wire Diameter 0.12 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name S-1166
Ends Closed & Ground
Finish None
Free Length 95.25 mm
Inside Diameter 25.65 mm
Material 302/304 Stainless Steel
Outside Diameter 31.75 mm
Part Type Standard
Rate 3.68 N/mm
SKU S-1166CS
Solid Length 32 mm
Suggested Max Deflection 48.26 mm
Suggested Max Load 177.92 N
Total Coils 10.5
Wire Diameter 3.05 mm
The S-1166CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.12" diameter 302/304 stainless steel, the S-1166 spring design exhibits reliable strength across its 10.5 active coils, withstanding repeated compression cycles with a maximum load of 40 lbf without succumbing to fatigue.

We manufacture the S-1166 design to provide a compression spring that is 3.75" long at rest and provides a consistent rate of 21 lbs/in along its recommended maximum of 1.9" deflection. For best results, your application should fully accommodate the inner (1.01") and outer (1.25") diameters of this spring and be designed for its closed & ground end configuration.