2022 NAICS industry in sector 31-33 Manufacturing
33351 Metalworking Machinery Manufacturing
NAICS 33351 is the US industry code for metalworking machinery manufacturing. It covers establishments primarily engaged in manufacturing metalworking machinery, such as metal cutting and metal forming machine tools; cutting tools; accessories for metalworking machinery; special dies, tools, jigs, and fixtures; industrial molds; rolling mill machinery; assembly machinery; coil handling, conversion, or straightening equipment; and wire drawing and fabricating machines.
Official definition
This industry comprises establishments primarily engaged in manufacturing metalworking machinery, such as metal cutting and metal forming machine tools; cutting tools; accessories for metalworking machinery; special dies, tools, jigs, and fixtures; industrial molds; rolling mill machinery; assembly machinery; coil handling, conversion, or straightening equipment; and wire drawing and fabricating machines.
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Manufacturing handtools (except power-driven), cutting dies (except metal cutting), saw blades, and handsaws are classified in Industry 33221, Cutlery and Handtool Manufacturing.
- Manufacturing casting molds for heavy steel ingots are classified in Industry 33151, Ferrous Metal Foundries.
- Manufacturing power-driven handtools and welding and soldering equipment are classified in Industry 33399, All Other General Purpose Machinery Manufacturing.
Codes in 33351
Data last changed November 14, 2026. How this page is built.