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

Compression spring manufactured from Hard Drawn with 15 coils and Closed ends. This spring features an O.D. of 0.375 Inch, and an I.D. of 0.307 Inch.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Display Name 525
Ends Closed
Finish Zinc
Free Length 1.75 in
Inside Diameter 0.307 in
Material Hard Drawn
Outside Diameter 0.375 in
Part Type Standard
Rate 3.7 lbs/in
SKU 525CS
Solid Length 0.54 in
Suggested Max Deflection 1.1 in
Suggested Max Load 4.2 lbf
Total Coils 15
Wire Diameter 0.034 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 525
Ends Closed
Finish Zinc
Free Length 44.45 mm
Inside Diameter 7.8 mm
Material Hard Drawn
Outside Diameter 9.53 mm
Part Type Standard
Rate 0.65 N/mm
SKU 525CS
Solid Length 13.72 mm
Suggested Max Deflection 27.94 mm
Suggested Max Load 18.68 N
Total Coils 15
Wire Diameter 0.86 mm