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Century Spring

B18-181CS - 3" 302/304 Stainless Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from 302/304 stainless steel with 20 coils and closed & ground ends. This spring features an O.D. of 0.734", and an I.D. of 0.554".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name B18-181
Ends Closed & Ground
Finish None
Free Length 3 in
Inside Diameter 0.554 in
Material 302/304 Stainless Steel
Outside Diameter 0.734 in
Part Type Standard
Rate 17 lbs/in
SKU B18-181CS
Solid Length 1.8 in
Suggested Max Deflection 1.2 in
Suggested Max Load 21 lbf
Total Coils 20
Wire Diameter 0.09 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name B18-181
Ends Closed & Ground
Finish None
Free Length 76.2 mm
Inside Diameter 14.07 mm
Material 302/304 Stainless Steel
Outside Diameter 18.64 mm
Part Type Standard
Rate 2.98 N/mm
SKU B18-181CS
Solid Length 45.72 mm
Suggested Max Deflection 30.48 mm
Suggested Max Load 93.41 N
Total Coils 20
Wire Diameter 2.29 mm
The B18-181CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.09" diameter 302/304 stainless steel, the B18-181 spring design exhibits reliable strength across its 20 active coils, withstanding repeated compression cycles with a maximum load of 21 lbf without succumbing to fatigue.

We manufacture the B18-181 design to provide a compression spring that is 3" long at rest and provides a consistent rate of 17 lbs/in along its recommended maximum of 1.2" deflection. For best results, your application should fully accommodate the inner (0.554") and outer (0.734") diameters of this spring and be designed for its closed & ground end configuration.

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