Spiral Torsion Springs

PennDOT Dump Truck Specification Changes

springs. Double helix spiral torsion and other forms of torsion springs are not acceptable. Spring tension to be adjustable by simply relocating a tension adjustment pin without unbolting the pivot pin itself. Where the arm connects to the pivot pin it must ride on a self

  Spring, Spiral, Torsion, Torsion springs, Spiral torsion