Establishments commonly known as contract tool and die shops and primarily engaged in manufacturing, on a job or order basis, special tools and fixtures for use with machine tools, hammers, die-casting machines, and presses. The products of establishments classified in this industry include a wide variety of special toolings, such as dies; punches; diesets and components, and subpresses; jigs and fixtures; and special checking devices. Establishments primarily engaged in manufacturing molds for die-casting and foundry casting; metal molds for plaster working, rubber working, plastics working, glass working and similar machinery are also included. Establishments primarily engaged in manufacturing molds for heavy steel ingots are classified in Industry 3321, and those manufacturing cutting dies, except metal cutting, are classified in Industry 3423.

• Diamond dies, metalworking
• Dies and die holders for metal die-casting and metal cutting and
• Dies, metalworking, except threading
• Dies, plastics forming
• Dies, steel rule
• Diesets for metal stamping (presses)
• Extrusion dies
• Forms, metal (molds): for foundry and plastics working machinery
• Industrial molds
• Jigs and fixtures (metalworking machinery accessories)
• Jigs: inspection, gauging, and checking
• Punches, forming and stamping
• Subpresses, metalworking
• Welding positioners (jigs)
• Wiredrawing and straightening dies