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Century Spring

4126 - 3.5 Inch Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from Spring Steel with 15.5 coils and Closed ends. This spring features an O.D. of 0.734 Inch, and an I.D. of 0.64 Inch.

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 4126
Ends Closed
Finish Zinc
Free Length 3.5 in
Inside Diameter 0.64 in
Material Spring Steel
Outside Diameter 0.734 in
Part Type Standard
Rate 1.6 lbs/in
SKU 4126CS
Solid Length 0.78 in
Suggested Max Deflection 2.7 in
Suggested Max Load 4.4 lbf
Total Coils 15.5
Wire Diameter 0.047 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 4126
Ends Closed
Finish Zinc
Free Length 88.9 mm
Inside Diameter 16.26 mm
Material Spring Steel
Outside Diameter 18.64 mm
Part Type Standard
Rate 0.28 N/mm
SKU 4126CS
Solid Length 19.81 mm
Suggested Max Deflection 68.58 mm
Suggested Max Load 19.57 N
Total Coils 15.5
Wire Diameter 1.19 mm
The 4126CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.047" diameter hard drawn, the 4126 spring design exhibits reliable strength across its 15.5 active coils, withstanding repeated compression cycles with a maximum load of 4.4 lbf without succumbing to fatigue.

We manufacture the 4126 design to provide a compression spring that is 3.5" long at rest and provides a consistent rate of 1.6 lbs/in along its recommended maximum of 2.7" deflection. For best results, your application should fully accommodate the inner (0.64") and outer (0.734") diameters of this spring and be designed for its closed end configuration.

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