NAICS Code 333 — Machinery Manufacturing

Subsector in the official 2022 North American Industry Classification System (U.S. Census Bureau). It contains 7 direct sub-codes.

Code	333
Title	Machinery Manufacturing
Level	Subsector (3-digit)
Edition	NAICS 2022 edition

Official definition (2022 NAICS)

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.

Where 333 sits in the hierarchy

Level	Code	Title
Sector	31-33	Manufacturing
Subsector	333	Machinery Manufacturing

Codes under 333

Code	Title
3331	Agriculture, Construction, and Mining Machinery Manufacturing
3332	Industrial Machinery Manufacturing
3333	Commercial and Service Industry Machinery Manufacturing
3334	Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing
3335	Metalworking Machinery Manufacturing
3336	Engine, Turbine, and Power Transmission Equipment Manufacturing
3339	Other General Purpose Machinery Manufacturing

Related Subsector codes

• 311 — Food Manufacturing
• 312 — Beverage and Tobacco Product Manufacturing
• 313 — Textile Mills
• 314 — Textile Product Mills
• 315 — Apparel Manufacturing
• 316 — Leather and Allied Product Manufacturing
• 321 — Wood Product Manufacturing
• 322 — Paper Manufacturing
• 323 — Printing and Related Support Activities
• 324 — Petroleum and Coal Products Manufacturing
• 325 — Chemical Manufacturing
• 326 — Plastics and Rubber Products Manufacturing

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.