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Century Spring

4301CS - 3.75" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 37 coils and closed & ground ends. This spring features an O.D. of 0.375", and an I.D. of 0.231".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 4301
Ends Closed & Ground
Finish Zinc
Free Length 3.75 in
Inside Diameter 0.231 in
Material Spring Steel
Outside Diameter 0.375 in
Part Type Standard
Rate 40 lbs/in
SKU 4301CS
Solid Length 2.66 in
Suggested Max Deflection 0.8 in
Suggested Max Load 32 lbf
Total Coils 37
Wire Diameter 0.072 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 4301
Ends Closed & Ground
Finish Zinc
Free Length 95.25 mm
Inside Diameter 5.87 mm
Material Spring Steel
Outside Diameter 9.53 mm
Part Type Standard
Rate 7 N/mm
SKU 4301CS
Solid Length 67.56 mm
Suggested Max Deflection 20.32 mm
Suggested Max Load 142.34 N
Total Coils 37
Wire Diameter 1.83 mm
The 4301CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.072" diameter spring steel, the 4301 spring design exhibits reliable strength across its 37 active coils, withstanding repeated compression cycles with a maximum load of 32 lbf without succumbing to fatigue.

We manufacture the 4301 design to provide a compression spring that is 3.75" long at rest and provides a consistent rate of 40 lbs/in along its recommended maximum of 0.8" deflection. For best results, your application should fully accommodate the inner (0.231") and outer (0.375") diameters of this spring and be designed for its closed & ground end configuration.

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