2022 NAICS subsector in sector 31-33 Manufacturing
333 Machinery Manufacturing
NAICS 333 is the US industry code for machinery manufacturing. Industries in the Machinery Manufacturing subsector create end products that apply mechanical force, for example, the application of gears and levers, to perform work.
Official definition
Industries in the Machinery Manufacturing subsector create end products that apply mechanical force, for example, the application of gears and levers, to perform work. Some important processes for the manufacture of machinery are forging, stamping, bending, forming, and machining that are used to shape individual pieces of metal. Processes, such as welding and assembling are used to join separate parts together. Although these processes are similar to those used in metal fabricating establishments, machinery manufacturing is different because it typically employs multiple metal forming processes in manufacturing the various parts of the machine. Moreover, complex assembly operations are an inherent part of the production process.
In general, design considerations are very important in machinery production. Establishments specialize in making machinery designed for particular applications. Thus, design is considered to be part of the production process for the purpose of implementing NAICS. The NAICS structure reflects this by defining industries and industry groups that make machinery for different applications. A broad distinction exists between machinery that is generally used in a variety of industrial applications (i.e., general purpose machinery) and machinery that is designed to be used in a particular industry (i.e., special purpose machinery). Three industry groups consist of special purpose machinery--Agriculture, Construction, and Mining Machinery Manufacturing; Industrial Machinery Manufacturing; and Commercial and Service Industry Machinery Manufacturing. The other industry groups make general purpose machinery: Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing; Metalworking Machinery Manufacturing; Engine, Turbine, and Power Transmission Equipment Manufacturing; and Other General Purpose Machinery Manufacturing.
Codes in 333
- 3331Agriculture, Construction, and Mining Machinery Manufacturing5 codes
- 3332Industrial Machinery Manufacturing4 codes
- 3333Commercial and Service Industry Machinery Manufacturing1 codes
- 3334Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing3 codes
- 3335Metalworking Machinery Manufacturing5 codes
- 3336Engine, Turbine, and Power Transmission Equipment Manufacturing4 codes
- 3339Other General Purpose Machinery Manufacturing13 codes
Data last changed November 14, 2026. How this page is built.