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Century Spring

B8-21CS - 0.5" Music Wire Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from music wire with 10 coils and closed & ground ends. This spring features an O.D. of 0.203", and an I.D. of 0.157".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name B8-21
Ends Closed & Ground
Finish None
Free Length 0.5 in
Inside Diameter 0.157 in
Material Music Wire
Outside Diameter 0.203 in
Part Type Standard
Rate 8.6 lbs/in
SKU B8-21CS
Solid Length 0.23 in
Suggested Max Deflection 0.27 in
Suggested Max Load 2.3 lbf
Total Coils 10
Wire Diameter 0.023 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name B8-21
Ends Closed & Ground
Finish None
Free Length 12.7 mm
Inside Diameter 3.99 mm
Material Music Wire
Outside Diameter 5.16 mm
Part Type Standard
Rate 1.51 N/mm
SKU B8-21CS
Solid Length 5.84 mm
Suggested Max Deflection 6.86 mm
Suggested Max Load 10.23 N
Total Coils 10
Wire Diameter 0.58 mm
The B8-21 compression spring is engineered for optimal performance in demanding applications. Constructed from high-quality music wire and designed with precision and durability in mind, this spring is an essential component for a variety of mechanical systems where reliable force and resilience are paramount.

The B8-21CS compression spring is designed with a free length of 2.75" total of 15 coils, and a rate of 2.6 lbs/in providing a balanced combination of flexibility and strength. This spring coil, and its closed & ground end configuration allows for efficient energy storage and release, making it suitable for applications requiring precise motion control.

The B8-21 spring design is ideal for use in industrial machinery, automotive systems, and various mechanical assemblies where reliable force application is crucial. Its robust construction and thoughtful design make it a dependable choice for engineers seeking a high-performance spring solution.

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