- Pitch 6,283mm - Machined parts - Pressure angle 20° - Right handed lead angle - Materials: Worm: Steel 20NCD2 or Delrin plastic Wheel: bronze CuAl10NiFe4 or Delrin plastic - Delrin: Working temp. -50°C to +80°C Options - Left handed lead angle - Wheel can have from 12 to 285 teeth