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12729 - 0.87 Inch, 4.1 Inch Pounds Music Wire Compression Spring

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

Compression spring manufactured from Music Wire with 4.88 coils and Closed & Ground ends. This spring features an O.D. of 0.718 Inch, an I.D. of 0.638 Inch, and a spring rate of 4.1 Inch Pounds.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Display Name 12729
Ends Closed & Ground
Finish Black Oxide
Free Length 0.87 in
Inside Diameter 0.638 in
Material Music Wire
Outside Diameter 0.718 in
Part Type Standard
Rate 4.1 lbs/in
SKU 12729CS
Solid Length 0.2 in
Suggested Max Deflection 0.67 in
Suggested Max Load 2.8 lbf
Total Coils 4.88
Wire Diameter 0.04 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 12729
Ends Closed & Ground
Finish Black Oxide
Free Length 22.1 mm
Inside Diameter 16.21 mm
Material Music Wire
Outside Diameter 18.24 mm
Part Type Standard
Rate 0.72 N/mm
SKU 12729CS
Solid Length 5.08 mm
Suggested Max Deflection 17.02 mm
Suggested Max Load 12.45 N
Total Coils 4.88
Wire Diameter 1.02 mm

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