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Century Spring

S-18CS - 1.25" 302/304 Stainless Steel Compression Spring

Inventory Status
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Compression spring manufactured from 302/304 stainless steel with 9.75 coils and closed & ground ends. This spring features an O.D. of 0.531", and an I.D. of 0.387".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name S-18
Ends Closed & Ground
Finish None
Free Length 1.25 in
Inside Diameter 0.387 in
Material 302/304 Stainless Steel
Outside Diameter 0.531 in
Part Type Standard
Rate 45 lbs/in
SKU S-18CS
Solid Length 0.7 in
Suggested Max Deflection 0.49 in
Suggested Max Load 22 lbf
Total Coils 9.75
Wire Diameter 0.072 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name S-18
Ends Closed & Ground
Finish None
Free Length 31.75 mm
Inside Diameter 9.83 mm
Material 302/304 Stainless Steel
Outside Diameter 13.49 mm
Part Type Standard
Rate 7.88 N/mm
SKU S-18CS
Solid Length 17.78 mm
Suggested Max Deflection 12.45 mm
Suggested Max Load 97.86 N
Total Coils 9.75
Wire Diameter 1.83 mm
The S-18CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.072" diameter 302/304 stainless steel, the S-18 spring design exhibits reliable strength across its 9.75 active coils, withstanding repeated compression cycles with a maximum load of 22 lbf without succumbing to fatigue.

We manufacture the S-18 design to provide a compression spring that is 1.25" long at rest and provides a consistent rate of 45 lbs/in along its recommended maximum of 0.49" deflection. For best results, your application should fully accommodate the inner (0.387") and outer (0.531") diameters of this spring and be designed for its closed & ground end configuration.

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