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B18-129CS - 2" Spring Steel Compression Spring

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Compression spring manufactured from spring steel with 15.8 coils and closed & ground ends. This spring features an O.D. of 0.328", and an I.D. of 0.246".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name B18-129
Ends Closed & Ground
Finish Zinc
Free Length 2 in
Inside Diameter 0.246 in
Material Spring Steel
Outside Diameter 0.328 in
Part Type Standard
Rate 12 lbs/in
SKU B18-129CS
Solid Length 0.65 in
Suggested Max Deflection 0.64 in
Suggested Max Load 8 lbf
Total Coils 15.8
Wire Diameter 0.041 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name B18-129
Ends Closed & Ground
Finish Zinc
Free Length 50.8 mm
Inside Diameter 6.25 mm
Material Spring Steel
Outside Diameter 8.33 mm
Part Type Standard
Rate 2.1 N/mm
SKU B18-129CS
Solid Length 16.51 mm
Suggested Max Deflection 16.26 mm
Suggested Max Load 35.58 N
Total Coils 15.8
Wire Diameter 1.04 mm
The B18-129CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.041" diameter spring steel, the B18-129 spring design exhibits reliable strength across its 15.8 active coils, withstanding repeated compression cycles with a maximum load of 8 lbf without succumbing to fatigue.

We manufacture the B18-129 design to provide a compression spring that is 2" long at rest and provides a consistent rate of 12 lbs/in along its recommended maximum of 0.64" deflection. For best results, your application should fully accommodate the inner (0.246") and outer (0.328") diameters of this spring and be designed for its closed & ground end configuration.

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