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Century Spring

3993CS - 1.38" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 9 coils and closed & ground ends. This spring features an O.D. of 0.718", and an I.D. of 0.478".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 3993
Ends Closed & Ground
Finish Zinc
Free Length 1.38 in
Inside Diameter 0.478 in
Material Spring Steel
Outside Diameter 0.718 in
Part Type Standard
Rate 199 lbs/in
SKU 3993CS
Solid Length 1.08 in
Suggested Max Deflection 0.3 in
Suggested Max Load 59 lbf
Total Coils 9
Wire Diameter 0.12 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 3993
Ends Closed & Ground
Finish Zinc
Free Length 35.05 mm
Inside Diameter 12.14 mm
Material Spring Steel
Outside Diameter 18.24 mm
Part Type Standard
Rate 34.84 N/mm
SKU 3993CS
Solid Length 27.43 mm
Suggested Max Deflection 7.62 mm
Suggested Max Load 262.43 N
Total Coils 9
Wire Diameter 3.05 mm
The 3993CS 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 spring steel, the 3993 spring design exhibits reliable strength across its 9 active coils, withstanding repeated compression cycles with a maximum load of 59 lbf without succumbing to fatigue.

We manufacture the 3993 design to provide a compression spring that is 1.38" long at rest and provides a consistent rate of 199 lbs/in along its recommended maximum of 0.3" deflection. For best results, your application should fully accommodate the inner (0.478") and outer (0.718") diameters of this spring and be designed for its closed & ground end configuration.

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