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AA-63CS - 0.25" 302/304 Stainless Steel Compression Spring

Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours

Compression spring manufactured from 302/304 stainless steel with 3 coils and closed & ground ends. This spring features an O.D. of 0.484", and an I.D. of 0.384".

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

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Display Name AA-63
Ends Closed & Ground
Finish None
Free Length 0.25 in
Inside Diameter 0.384 in
Material 302/304 Stainless Steel
Outside Diameter 0.484 in
Part Type Standard
Rate 97 lbs/in
SKU AA-63CS
Solid Length 0.15 in
Suggested Max Deflection 0.09 in
Suggested Max Load 8.7 lbf
Total Coils 3
Wire Diameter 0.05 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name AA-63
Ends Closed & Ground
Finish None
Free Length 6.35 mm
Inside Diameter 9.75 mm
Material 302/304 Stainless Steel
Outside Diameter 12.29 mm
Part Type Standard
Rate 16.98 N/mm
SKU AA-63CS
Solid Length 3.81 mm
Suggested Max Deflection 2.29 mm
Suggested Max Load 38.7 N
Total Coils 3
Wire Diameter 1.27 mm
The AA-63CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.05" diameter 302/304 stainless steel, the AA-63 spring design exhibits reliable strength across its 3 active coils, withstanding repeated compression cycles with a maximum load of 8.7 lbf without succumbing to fatigue.

We manufacture the AA-63 design to provide a compression spring that is 0.25" long at rest and provides a consistent rate of 97 lbs/in along its recommended maximum of 0.09" deflection. For best results, your application should fully accommodate the inner (0.384") and outer (0.484") diameters of this spring and be designed for its closed & ground end configuration.