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S-306CS - 3.5" 302/304 Stainless Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from 302/304 stainless steel with 9 coils and closed ends. This spring features an O.D. of 1.203", and an I.D. of 1.033".

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name S-306
Ends Closed
Finish None
Free Length 3.5 in
Inside Diameter 1.033 in
Material 302/304 Stainless Steel
Outside Diameter 1.203 in
Part Type Standard
Rate 6.7 lbs/in
SKU S-306CS
Solid Length 0.85 in
Suggested Max Deflection 2.5 in
Suggested Max Load 17 lbf
Total Coils 9
Wire Diameter 0.085 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name S-306
Ends Closed
Finish None
Free Length 88.9 mm
Inside Diameter 26.24 mm
Material 302/304 Stainless Steel
Outside Diameter 30.56 mm
Part Type Standard
Rate 1.17 N/mm
SKU S-306CS
Solid Length 21.59 mm
Suggested Max Deflection 63.5 mm
Suggested Max Load 75.62 N
Total Coils 9
Wire Diameter 2.16 mm
The compression spring S-306CS is an essential component designed for applications requiring reliable force and energy storage. Crafted from high-quality 302/304 stainless steel, the S-306 compression spring design exhibits exceptional tensile strength and resilience.

The S-306 design is manufactured with a free length of 3.5", with an outer diameter of 1.203", an inner diameter of 1.033", and a total of 9 coils, expertly designed to deliver consistent compression characteristics including a rate of 6.7 lbs/in.

The S-306CS 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 S-306 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.