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Century Spring

4138CS - 1.75" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 3.5 coils and closed & ground ends. This spring features an O.D. of 3", and an I.D. of 2.586".

NOTE: The spring rate value for compression springs with 4 coils or less is a reference value.

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 4138
Ends Closed & Ground
Finish Zinc
Free Length 1.75 in
Inside Diameter 2.586 in
Material Spring Steel
Outside Diameter 3 in
Part Type Standard
Rate 81 lbs/in
SKU 4138CS
Solid Length 0.72 in
Suggested Max Deflection 1 in
Suggested Max Load 83 lbf
Total Coils 3.5
Wire Diameter 0.207 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 4138
Ends Closed & Ground
Finish Zinc
Free Length 44.45 mm
Inside Diameter 65.68 mm
Material Spring Steel
Outside Diameter 76.2 mm
Part Type Standard
Rate 14.18 N/mm
SKU 4138CS
Solid Length 18.29 mm
Suggested Max Deflection 25.4 mm
Suggested Max Load 369.18 N
Total Coils 3.5
Wire Diameter 5.26 mm
The 4138CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.207" diameter spring steel, the 4138 spring design exhibits reliable strength across its 3.5 active coils, withstanding repeated compression cycles with a maximum load of 83 lbf without succumbing to fatigue.

We manufacture the 4138 design to provide a compression spring that is 1.75" long at rest and provides a consistent rate of 81 lbs/in along its recommended maximum of 1" deflection. For best results, your application should fully accommodate the inner (2.586") and outer (3") diameters of this spring and be designed for its closed & ground end configuration.

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