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Century Spring

3740CS - 1.31" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 7.25 coils and closed & ground ends. This spring features an O.D. of 0.734", and an I.D. of 0.534".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 3740
Ends Closed & Ground
Finish Zinc
Free Length 1.31 in
Inside Diameter 0.534 in
Material Spring Steel
Outside Diameter 0.734 in
Part Type Standard
Rate 107 lbs/in
SKU 3740CS
Solid Length 0.73 in
Suggested Max Deflection 0.41 in
Suggested Max Load 44 lbf
Total Coils 7.25
Wire Diameter 0.1 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 3740
Ends Closed & Ground
Finish Zinc
Free Length 33.27 mm
Inside Diameter 13.56 mm
Material Spring Steel
Outside Diameter 18.64 mm
Part Type Standard
Rate 18.74 N/mm
SKU 3740CS
Solid Length 18.54 mm
Suggested Max Deflection 10.41 mm
Suggested Max Load 195.71 N
Total Coils 7.25
Wire Diameter 2.54 mm
The 3740CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.1" diameter spring steel, the 3740 spring design exhibits reliable strength across its 7.25 active coils, withstanding repeated compression cycles with a maximum load of 44 lbf without succumbing to fatigue.

We manufacture the 3740 design to provide a compression spring that is 1.31" long at rest and provides a consistent rate of 107 lbs/in along its recommended maximum of 0.41" deflection. For best results, your application should fully accommodate the inner (0.534") and outer (0.734") diameters of this spring and be designed for its closed & ground end configuration.

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