Peterson Spring

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ISO Inch Series

Light-Duty-spring

Light Duty

(Solid Green)

Efficient Operating Range is 25% to 50% deflection of free length. Maximum deflection is 50%; Long Life deflection is 40%; Optimum Life deflection is 25%. Deflection beyond this Efficient Operating Range could result in premature spring failure. Travel to Solid is a reference dimension only and should never be approached during use.

Medium-Duty-inch-spring

Medium Duty

(Solid Blue)

Efficient Operating Range is 20% to 37% deflection of free length. Maximum deflection is 37%; Long Life deflection is 25%; Optimum Life deflection is 20%. Deflection beyond this Efficient Operating Range could result in premature spring failure. Travel to Solid is a reference dimension only and should never be approached during use.

Heavy-Duty-inch-spring

Heavy Duty

(Solid Red)

Efficient Operating Range is 15% to 30% deflection of free length. Maximum deflection is 30%; Long Life deflection is 20%; Optimum Life deflection is 15%. Deflection beyond this Efficient Operating Range could result in premature spring failure. Travel to Solid is a reference dimension only and should never be approached during use.

Extra-Heavy-Duty-inch-spring

Extra Heavy Duty

(Solid Yellow)

Efficient Operating Range is 15% to 25% deflection of free length. Maximum deflection is 25%; Long Life deflection is 20%; Optimum Life deflection is 15%. Deflection beyond this Efficient Operating Range could result in premature spring failure. Travel to Solid is a reference dimension only and should never be approached during use.

Die Springs Menu

  • Standard Inch Series
    • Medium Duty – Standard Inch Series
    • Medium Heavy Duty – Standard Inch Series
    • Heavy Duty – Standard Inch Series
    • Extra Heavy Duty – Standard Inch Series
  • ISO Inch Series
    • Light Duty – ISO Inch Series
    • Medium Duty ISO Inch Series
    • Heavy Duty – ISO Inch Series
    • Extra Heavy Duty – ISO Inch Series
  • ISO Metric Series
    • Light Duty – ISO Metric Series
    • Medium Duty – ISO Metric Series
    • Heavy Duty – ISO Metric Series
    • Extra Heavy Duty – ISO Metric Series

The best products, coupled with practical, innovative thinking

Established in 1914, Peterson Spring is the largest privately held spring manufacturer in North America. Through designing, manufacturing and supplying springs, snap-rings, wire forms, clips, clamps, stampings, and a variety of sub-assemblies, Peterson Spring has expanded to 12 worldwide locations.
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