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Century Spring

51221SCS - 1.969" 316 Stainless Steel Compression Spring

Inventory Status
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Compression spring manufactured from 316 stainless steel with 4.4 coils and closed & ground ends. This spring features an O.D. of 1.953", and an I.D. of 1.598".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 51221S
Ends Closed & Ground
Finish None
Free Length 1.969 in
Inside Diameter 1.598 in
Material 316 Stainless Steel
Outside Diameter 1.953 in
Rate 91.662 lbs/in
SKU 51221SCS
Solid Length 0.78 in
Suggested Max Deflection 0.696 in
Suggested Max Load 63.823 lbf
Total Coils 4.4
Wire Diameter 0.177 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 51221S
Ends Closed & Ground
Finish None
Free Length 50.01 mm
Inside Diameter 40.59 mm
Material 316 Stainless Steel
Outside Diameter 49.61 mm
Rate 16.05 N/mm
SKU 51221SCS
Solid Length 19.81 mm
Suggested Max Deflection 17.68 mm
Suggested Max Load 283.88 N
Total Coils 4.4
Wire Diameter 4.5 mm
The 51221SCS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.177" diameter 316 stainless steel, the 51221S spring design exhibits reliable strength across its 4.4 active coils, withstanding repeated compression cycles with a maximum load of 63.823 lbf without succumbing to fatigue.

We manufacture the 51221S design to provide a compression spring that is 1.969" long at rest and provides a consistent rate of 91.662 lbs/in along its recommended maximum of 0.696" deflection. For best results, your application should fully accommodate the inner (1.598") and outer (1.953") diameters of this spring and be designed for its closed & ground end configuration.

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