M-57

M-57

Regular extension spring in Music Wire. This spring features an O.D. of 0.219 Inch, an initial tension of 0.7 Pound, and a spring rate of 7.2 Pound Force per Inch.

Current variant: M-57CS. Navigate to a different variant:
Diagram of extension spring with measurements
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name M-57
Ends Machine Hook
Finish Zinc
Initial Tension 0.7 lb
Length 0.78 in
Material Music Wire
Outside Diameter 0.219 in
Part Type Standard
Rate 7.2 lbf/in
Sugg Max Deflection 0.62 in
Sugg Max Load 5.1 lbf
Wind Direction Left
Wire Diameter 0.028 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name M-57
Ends Machine Hook
Finish Zinc
Initial Tension 0.32 kg
Length 19.81 mm
Material Music Wire
Outside Diameter 5.56 mm
Part Type Standard
Rate 1.26 N/mm
Sugg Max Deflection 15.75 mm
Sugg Max Load 22.68 N
Wind Direction Left
Wire Diameter 0.71 mm

Inventory Status

Low Stock

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Quantity Price
1 - 49 $3.68
50 - 149 $3.50
150 - 299 $3.32
300 - 499 $3.13
500 - 749 $2.76
750 - 999 $2.40
1000+ Call for price