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This helical torsion spring is left hand wound and made of steel music wire for greater strength than stainless steel. It has straight torsion ends (legs) for a wide variety of uses, and the free (unloaded) deflection angle between the ends is 210 degrees. The spring has a maximum operating temperature of 250 degrees Fahrenheit (121 degrees Celsius). This music wire torsion spring meets ASTM International standard ASTM A228 and Aerospace Material Specifications standard AMS 5112 for quality assurance, and is used in various applications, including hinges, levers, and switches.
Torsion springs are open-coil spiral (helical) springs that provide resistance to twisting or torque. The spring wire can be left hand wound or right hand wound to resist counterclockwise or clockwise rotations. Various end types (such as straight or hooked) and unloaded (free) angles between the ends are available to suit different uses. Torsion springs are used in a variety of applications, including hinges, counterbalances, levers, and garage doors, among others.
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