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Century Spring

S-1209CS - 3" 302/304 Stainless Steel Compression Spring

Inventory Status
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Compression spring manufactured from 302/304 stainless steel with 8.5 coils and closed & ground ends. This spring features an O.D. of 1.375", and an I.D. of 1.135".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name S-1209
Ends Closed & Ground
Finish None
Free Length 3 in
Inside Diameter 1.135 in
Material 302/304 Stainless Steel
Outside Diameter 1.375 in
Part Type Standard
Rate 20 lbs/in
SKU S-1209CS
Solid Length 1.02 in
Suggested Max Deflection 1.8 in
Suggested Max Load 37 lbf
Total Coils 8.5
Wire Diameter 0.12 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name S-1209
Ends Closed & Ground
Finish None
Free Length 76.2 mm
Inside Diameter 28.83 mm
Material 302/304 Stainless Steel
Outside Diameter 34.93 mm
Part Type Standard
Rate 3.5 N/mm
SKU S-1209CS
Solid Length 25.91 mm
Suggested Max Deflection 45.72 mm
Suggested Max Load 164.58 N
Total Coils 8.5
Wire Diameter 3.05 mm
The S-1209CS 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-1209 spring design exhibits reliable strength across its 8.5 active coils, withstanding repeated compression cycles with a maximum load of 37 lbf without succumbing to fatigue.

We manufacture the S-1209 design to provide a compression spring that is 3" long at rest and provides a consistent rate of 20 lbs/in along its recommended maximum of 1.8" deflection. For best results, your application should fully accommodate the inner (1.135") and outer (1.375") diameters of this spring and be designed for its closed & ground end configuration.

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