3599 Industrial and Commercial Machinery and Equipment, Not Elsewhere Classified Establishments primarily engaged in manufacturing machinery and equipment and parts, not elsewhere classified, such as amusement park equipment and flexible metal hose and tubing. This industry also includes establishments primarily engaged in producing or repairing machinery and equipment parts, not elsewhere classified, on a job or order basis for others. Establishments primarily engaged in manufacturing motor vehicle engine filters are classified in industry 3714, and those manufacturing coin- operated amusement machines are classified in industry 3999.