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Century Spring

S-3221CS - 2.72" 302/304 Stainless Steel Compression Spring

Inventory Status
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Compression spring manufactured from 302/304 stainless steel with 4.5 coils and closed & ground ends. This spring features an O.D. of 3", and an I.D. of 2.618".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name S-3221
Ends Closed & Ground
Finish None
Free Length 2.72 in
Inside Diameter 2.618 in
Material 302/304 Stainless Steel
Outside Diameter 3 in
Part Type Standard
Rate 31 lbs/in
SKU S-3221CS
Solid Length 0.859 in
Suggested Max Deflection 1.861 in
Suggested Max Load 58 lbf
Total Coils 4.5
Wire Diameter 0.192 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name S-3221
Ends Closed & Ground
Finish None
Free Length 69.09 mm
Inside Diameter 66.5 mm
Material 302/304 Stainless Steel
Outside Diameter 76.2 mm
Part Type Standard
Rate 5.43 N/mm
SKU S-3221CS
Solid Length 21.82 mm
Suggested Max Deflection 47.27 mm
Suggested Max Load 257.98 N
Total Coils 4.5
Wire Diameter 4.88 mm
The S-3221CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.192" diameter 302/304 stainless steel, the S-3221 spring design exhibits reliable strength across its 4.5 active coils, withstanding repeated compression cycles with a maximum load of 58 lbf without succumbing to fatigue.

We manufacture the S-3221 design to provide a compression spring that is 2.72" long at rest and provides a consistent rate of 31 lbs/in along its recommended maximum of 1.861" deflection. For best results, your application should fully accommodate the inner (2.618") and outer (3") diameters of this spring and be designed for its closed & ground end configuration.

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