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Century Spring

S-121CS - 8" 302/304 Stainless Steel Compression Spring

Inventory Status
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Compression spring manufactured from 302/304 stainless steel with 16 coils and closed ends. This spring features an O.D. of 1", and an I.D. of 0.93".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name S-121
Ends Closed
Finish None
Free Length 8 in
Inside Diameter 0.93 in
Material 302/304 Stainless Steel
Outside Diameter 1 in
Part Type Standard
Rate 0.15 lbs/in
SKU S-121CS
Solid Length 0.6 in
Suggested Max Deflection 7.4 in
Suggested Max Load 1.1 lbf
Total Coils 16
Wire Diameter 0.035 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name S-121
Ends Closed
Finish None
Free Length 203.2 mm
Inside Diameter 23.62 mm
Material 302/304 Stainless Steel
Outside Diameter 25.4 mm
Part Type Standard
Rate 0.03 N/mm
SKU S-121CS
Solid Length 15.24 mm
Suggested Max Deflection 187.96 mm
Suggested Max Load 4.89 N
Total Coils 16
Wire Diameter 0.89 mm
The S-121CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.035" diameter 302/304 stainless steel, the S-121 spring design exhibits reliable strength across its 16 active coils, withstanding repeated compression cycles with a maximum load of 1.1 lbf without succumbing to fatigue.

We manufacture the S-121 design to provide a compression spring that is 8" long at rest and provides a consistent rate of 0.15 lbs/in along its recommended maximum of 7.4" deflection. For best results, your application should fully accommodate the inner (0.93") and outer (1") diameters of this spring and be designed for its closed end configuration.

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