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Century Spring

B1-21CS - 0.44" 302/304 Stainless Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from 302/304 stainless steel with 2.6 coils and closed ends. This spring features an O.D. of 0.546", and an I.D. of 0.45".

NOTE: The spring rate value for compression springs with 4 coils or less is a reference value.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name B1-21
Ends Closed
Finish None
Free Length 0.44 in
Inside Diameter 0.45 in
Material 302/304 Stainless Steel
Outside Diameter 0.546 in
Part Type Standard
Rate 55 lbs/in
SKU B1-21CS
Solid Length 0.171 in
Suggested Max Deflection 0.126 in
Suggested Max Load 7 lbf
Total Coils 2.6
Wire Diameter 0.0475 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name B1-21
Ends Closed
Finish None
Free Length 11.18 mm
Inside Diameter 11.43 mm
Material 302/304 Stainless Steel
Outside Diameter 13.87 mm
Part Type Standard
Rate 9.63 N/mm
SKU B1-21CS
Solid Length 4.34 mm
Suggested Max Deflection 3.2 mm
Suggested Max Load 31.14 N
Total Coils 2.6
Wire Diameter 1.21 mm
The compression spring B1-21CS is an essential component designed for applications requiring reliable force and energy storage. Crafted from high-quality 302/304 stainless steel, the B1-21 compression spring design exhibits exceptional tensile strength and resilience.

The B1-21 design is manufactured with a free length of 0.44", with an outer diameter of 0.546", an inner diameter of 0.45", and a total of 2.6 coils, expertly designed to deliver consistent compression characteristics including a rate of 55 lbs/in.

The B1-21CS 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 B1-21 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.

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