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4121CS - 4" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 14 coils and closed & ground ends. This spring features an O.D. of 1.125", and an I.D. of 0.829".

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 4121
Ends Closed & Ground
Finish Zinc
Free Length 4 in
Inside Diameter 0.829 in
Material Spring Steel
Outside Diameter 1.125 in
Part Type Standard
Rate 62 lbs/in
SKU 4121CS
Solid Length 2.07 in
Suggested Max Deflection 1.4 in
Suggested Max Load 87 lbf
Total Coils 14
Wire Diameter 0.148 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 4121
Ends Closed & Ground
Finish Zinc
Free Length 101.6 mm
Inside Diameter 21.06 mm
Material Spring Steel
Outside Diameter 28.58 mm
Part Type Standard
Rate 10.86 N/mm
SKU 4121CS
Solid Length 52.58 mm
Suggested Max Deflection 35.56 mm
Suggested Max Load 386.98 N
Total Coils 14
Wire Diameter 3.76 mm
The compression spring 4121CS is an essential component designed for applications requiring reliable force and energy storage. Crafted from high-quality spring steel, the 4121 compression spring design exhibits exceptional tensile strength and resilience.

The 4121 design is manufactured with a free length of 4", with an outer diameter of 1.125", an inner diameter of 0.829", and a total of 14 coils, expertly designed to deliver consistent compression characteristics including a rate of 62 lbs/in.

The 4121CS compression spring is ideally suited for use in a wide range of mechanical assemblies, including but not limited to automotive suspension systems, industrial machinery, and electronic devices.

In summary, the compression spring 4121 design stands out for its superior material properties, thoughtful design, and versatility in application. It is a prime choice for engineers committed to excellence and innovation in their projects.