33399 All Other General Purpose Machinery Manufacturing

Official definition

This industry comprises establishments primarily engaged in manufacturing general purpose machinery (except ventilation, heating, air-conditioning, and commercial refrigeration equipment; metalworking machinery; engines, turbines, and power transmission equipment; pumps and compressors; and material handling equipment).

Examples Census gives

• Automatic fire sprinkler systems manufacturing
• Bridge and gate lifting machinery manufacturing
• Fluid power cylinders manufacturing
• Fluid power pumps manufacturing
• Hydraulic and pneumatic jacks manufacturing
• Industrial-type furnaces manufacturing
• Packaging machinery manufacturing
• Power-driven handtools manufacturing
• Scales and balances manufacturing
• Welding equipment manufacturing

Source: US Census Bureau, 2022 NAICS descriptions.

When to use a different code

Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:

• Manufacturing ventilating, heating, air-conditioning (except motor vehicle), commercial refrigeration, and furnace filters are classified in Industry 33341, Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing.
• Manufacturing engine, turbine, and power transmission equipment are classified in Industry Group 3336, Engine, Turbine, and Power Transmission Equipment Manufacturing.
• Manufacturing pumps and compressors are classified in Industry 33391, Pump and Compressor Manufacturing.
• Manufacturing material handling equipment are classified in Industry 33392, Material Handling Equipment Manufacturing.
• Manufacturing motor vehicle air-conditioning systems and compressors, engine filters, and pumps are classified in Industry Group 3363, Motor Vehicle Parts Manufacturing.
• Manufacturing metal cutting, metal forming, and other metalworking machinery are classified in Industry 33351, Metalworking Machinery Manufacturing.
• Manufacturing power-driven heavy construction or mining hand operated tools, such as tampers, jackhammers, and augers are classified in Industry 33312, Construction Machinery Manufacturing, or Industry 33313, Mining and Oil and Gas Field Machinery Manufacturing.
• Manufacturing bakery ovens and industrial kilns, such as cement, wood, and chemical are classified in Industry 33324, Industrial Machinery Manufacturing.
• Manufacturing mechanical jacks, handheld soldering irons, countersink bits, drill bits, router bits, milling cutters, and other machine tools for woodcutting are classified in Industry 33221, Cutlery and Handtool Manufacturing.
• Manufacturing carnival and amusement park equipment, automotive maintenance equipment, and coin- or card-operated vending machines are classified in Industry 33331, Commercial and Service Industry Machinery Manufacturing.
• Manufacturing arc-welding transformers are classified in Industry 33531, Electrical Equipment Manufacturing.

Source: US Census Bureau, 2022 NAICS cross-references.

Codes in 33399

• 333991Power-Driven Handtool Manufacturing
• 333992Welding and Soldering Equipment Manufacturing
• 333993Packaging Machinery Manufacturing
• 333994Industrial Process Furnace and Oven Manufacturing
• 333995Fluid Power Cylinder and Actuator Manufacturing
• 333996Fluid Power Pump and Motor Manufacturing
• 333998All Other Miscellaneous General Purpose Machinery Manufacturing