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BB-39CS - 0.5" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 4.75 coils and closed & ground ends. This spring features an O.D. of 0.343", and an I.D. of 0.183".

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name BB-39
Ends Closed & Ground
Finish None
Free Length 0.5 in
Inside Diameter 0.183 in
Material Spring Steel
Outside Diameter 0.343 in
Part Type Standard
Rate 1177 lbs/in
SKU BB-39CS
Solid Length 0.38 in
Suggested Max Deflection 0.04 in
Suggested Max Load 46 lbf
Total Coils 4.75
Wire Diameter 0.08 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name BB-39
Ends Closed & Ground
Finish None
Free Length 12.7 mm
Inside Diameter 4.65 mm
Material Spring Steel
Outside Diameter 8.71 mm
Part Type Standard
Rate 206.09 N/mm
SKU BB-39CS
Solid Length 9.65 mm
Suggested Max Deflection 1.02 mm
Suggested Max Load 204.61 N
Total Coils 4.75
Wire Diameter 2.03 mm
The compression spring BB-39CS is an essential component designed for applications requiring reliable force and energy storage. Crafted from high-quality spring steel, the BB-39 compression spring design exhibits exceptional tensile strength and resilience.

The BB-39 design is manufactured with a free length of 0.5", with an outer diameter of 0.343", an inner diameter of 0.183", and a total of 4.75 coils, expertly designed to deliver consistent compression characteristics including a rate of 1177 lbs/in.

The BB-39CS 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 BB-39 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.