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B12-31 - 1.13 Inch, 0.66 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 17.5 coils and Closed & Ground ends. This spring features an O.D. of 0.406 Inch, an I.D. of 0.356 Inch, and a spring rate of 0.66 Inch Pounds.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Display Name B12-31
Ends Closed & Ground
Finish None
Free Length 1.13 in
Inside Diameter 0.356 in
Material Music Wire
Outside Diameter 0.406 in
Part Type Standard
Rate 0.66 lbs/in
SKU B12-31CS
Solid Length 0.44 in
Suggested Max Deflection 0.69 in
Suggested Max Load 0.45 lbf
Total Coils 17.5
Wire Diameter 0.025 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name B12-31
Ends Closed & Ground
Finish None
Free Length 28.7 mm
Inside Diameter 9.04 mm
Material Music Wire
Outside Diameter 10.31 mm
Part Type Standard
Rate 0.12 N/mm
SKU B12-31CS
Solid Length 11.18 mm
Suggested Max Deflection 17.53 mm
Suggested Max Load 2 N
Total Coils 17.5
Wire Diameter 0.64 mm

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