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4165CS - 4" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 7.75 coils and closed & ground ends. This spring features an O.D. of 1.906", and an I.D. of 1.636".

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 4165
Ends Closed & Ground
Finish Zinc
Free Length 4 in
Inside Diameter 1.636 in
Material Spring Steel
Outside Diameter 1.906 in
Part Type Standard
Rate 15 lbs/in
SKU 4165CS
Solid Length 1.05 in
Suggested Max Deflection 2.7 in
Suggested Max Load 40 lbf
Total Coils 7.75
Wire Diameter 0.135 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 4165
Ends Closed & Ground
Finish Zinc
Free Length 101.6 mm
Inside Diameter 41.55 mm
Material Spring Steel
Outside Diameter 48.41 mm
Part Type Standard
Rate 2.63 N/mm
SKU 4165CS
Solid Length 26.67 mm
Suggested Max Deflection 68.58 mm
Suggested Max Load 177.92 N
Total Coils 7.75
Wire Diameter 3.43 mm
The 4165CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.135" diameter spring steel, the 4165 spring design exhibits reliable strength across its 7.75 active coils, withstanding repeated compression cycles with a maximum load of 40 lbf without succumbing to fatigue.

We manufacture the 4165 design to provide a compression spring that is 4" long at rest and provides a consistent rate of 15 lbs/in along its recommended maximum of 2.7" deflection. For best results, your application should fully accommodate the inner (1.636") and outer (1.906") diameters of this spring and be designed for its closed & ground end configuration.