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Referenced on: http://computerequipment.tpub.com//TM-11-7440-278-23P/TM-11-7440-278-23P0266.htm
An open-or close-wound coil spring consisting of one or more helical coils, wound from different shapes and types of material and finished at the ends, designed to exert pressure in a rotating direction around the coil axis. Excludes springs designed for thermal actuation (springs in which the torsion forces are counteracted by changes in temperature) and SPRING, REINFORCING, HOSE.
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