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Century Spring

3303CS - 1.88" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 4.3 coils and closed & ground ends. This spring features an O.D. of 1.781", and an I.D. of 1.157".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 3303
Ends Closed & Ground
Finish Zinc
Free Length 1.88 in
Inside Diameter 1.157 in
Material Spring Steel
Outside Diameter 1.781 in
Part Type Standard
Rate 1878 lbs/in
SKU 3303CS
Solid Length 1.43 in
Suggested Max Deflection 0.22 in
Suggested Max Load 423 lbf
Total Coils 4.3
Wire Diameter 0.312 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 3303
Ends Closed & Ground
Finish Zinc
Free Length 47.75 mm
Inside Diameter 29.39 mm
Material Spring Steel
Outside Diameter 45.24 mm
Part Type Standard
Rate 328.84 N/mm
SKU 3303CS
Solid Length 36.32 mm
Suggested Max Deflection 5.59 mm
Suggested Max Load 1881.5 N
Total Coils 4.3
Wire Diameter 7.92 mm
The 3303CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.312" diameter spring steel, the 3303 spring design exhibits reliable strength across its 4.3 active coils, withstanding repeated compression cycles with a maximum load of 423 lbf without succumbing to fatigue.

We manufacture the 3303 design to provide a compression spring that is 1.88" long at rest and provides a consistent rate of 1878 lbs/in along its recommended maximum of 0.22" deflection. For best results, your application should fully accommodate the inner (1.157") and outer (1.781") diameters of this spring and be designed for its closed & ground end configuration.

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