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B18-138CS - 0.44" Music Wire Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from music wire with 6 coils and closed ends. This spring features an O.D. of 0.156", and an I.D. of 0.136".

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name B18-138
Ends Closed
Finish Gold Iridite
Free Length 0.44 in
Inside Diameter 0.136 in
Material Music Wire
Outside Diameter 0.156 in
Part Type Standard
Rate 1.2 lbs/in
SKU B18-138CS
Solid Length 0.07 in
Suggested Max Deflection 0.37 in
Suggested Max Load 0.42 lbf
Total Coils 6
Wire Diameter 0.01 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name B18-138
Ends Closed
Finish Gold Iridite
Free Length 11.18 mm
Inside Diameter 3.45 mm
Material Music Wire
Outside Diameter 3.96 mm
Part Type Standard
Rate 0.21 N/mm
SKU B18-138CS
Solid Length 1.78 mm
Suggested Max Deflection 9.4 mm
Suggested Max Load 1.87 N
Total Coils 6
Wire Diameter 0.25 mm
The B18-138 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 B18-138CS compression spring is designed with a free length of 0.5" total of 5.5 coils, and a rate of 18 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 B18-138 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.