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S-221 - 0.31 Inch 302/304 Stainless Steel Compression Spring

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

Regular compression spring in 302/304 Stainless Steel with 3.25 total coils and Closed & Ground ends. This spring features an O.D. of 0.562 Inch, and an I.D. of 0.452 Inch.

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 S-221
Ends Closed & Ground
Finish None
Free Length 0.31 in
Inside Diameter 0.452 in
Material 302/304 Stainless Steel
Outside Diameter 0.562 in
Part Type Standard
Rate 72 lbs/in
SKU S-221CS
Solid Length 0.18 in
Suggested Max Deflection 0.13 in
Suggested Max Load 9.5 lbf
Total Coils 3.25
Wire Diameter 0.055 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name S-221
Ends Closed & Ground
Finish None
Free Length 7.87 mm
Inside Diameter 11.48 mm
Material 302/304 Stainless Steel
Outside Diameter 14.27 mm
Part Type Standard
Rate 12.61 N/mm
SKU S-221CS
Solid Length 4.57 mm
Suggested Max Deflection 3.3 mm
Suggested Max Load 42.26 N
Total Coils 3.25
Wire Diameter 1.4 mm