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A13-21CS - 0.34" 302/304 Stainless Steel Compression Spring

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Compression spring manufactured from 302/304 stainless steel with 8.75 coils and closed ends. This spring features an O.D. of 0.125", and an I.D. of 0.079".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name A13-21
Ends Closed
Finish None
Free Length 0.34 in
Inside Diameter 0.079 in
Material 302/304 Stainless Steel
Outside Diameter 0.125 in
Part Type Standard
Rate 50 lbs/in
SKU A13-21CS
Solid Length 0.22 in
Suggested Max Deflection 0.07 in
Suggested Max Load 3.6 lbf
Total Coils 8.75
Wire Diameter 0.023 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name A13-21
Ends Closed
Finish None
Free Length 8.64 mm
Inside Diameter 2.01 mm
Material 302/304 Stainless Steel
Outside Diameter 3.18 mm
Part Type Standard
Rate 8.76 N/mm
SKU A13-21CS
Solid Length 5.59 mm
Suggested Max Deflection 1.78 mm
Suggested Max Load 16.01 N
Total Coils 8.75
Wire Diameter 0.58 mm
The A13-21 compression spring is engineered for optimal performance in demanding applications. Constructed from high-quality 302/304 stainless steel 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 A13-21CS compression spring is designed with a free length of 0.53" total of 5 coils, and a rate of 15 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 A13-21 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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