Analysis
NAICS 33351 is the 2022 NAICS industry for metalworking machinery manufacturing, part of 3335 (Metalworking Machinery Manufacturing). Census lists 173 example activities under it in the official index.
Between 2018 and 2023 the number of establishments fell 11% and employment fell 11%. The 2018 count used NAICS 2017, so part of a large move can come from codes being redefined rather than from businesses opening or closing.
County Business Patterns counts 5,772 US establishments in this code in 2023, employing 134,208 people at an average annual payroll of $69,334 per employee (51st percentile of national industries). 34% of the establishments have fewer than five employees, which is close to the national mix.
Across its national industries Census lists 173 index entries; typical ones are die-casting dies manufacturing, cutting dies, metalworking, manufacturing, angle rings (i.e., a machine tool accessory) manufacturing and arbor presses, metalworking, manufacturing.
Its goods appear in 328 statistical lines of the US tariff schedule, mostly under headings 8462 (machine tools (including presses) for working metal by…), 8459 (machine tools (including way-type unit head machines) for…) and 8461 (machine tools for planing, shaping, slotting, broaching…). That link is how import data is matched to domestic producers, for example in trade-remedy cases.
It splits into 5 more detailed codes. The largest by establishments is 333514 (Special Die and Tool, Die Set, Jig, and Fixture Manufacturing) with 1,976.
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.
Source: US Census Bureau, NAICS 2022 Manual.
Not this code if…
| The business mainly does | Use instead |
|---|---|
| Manufacturing handtools (except power-driven), cutting dies (except metal cutting), saw blades, and handsaws | 33221 Cutlery and Handtool Manufacturing |
| Manufacturing casting molds for heavy steel ingots | 33151 Ferrous Metal Foundries |
| Manufacturing power-driven handtools and welding and soldering equipment | 33399 All Other General Purpose Machinery Manufacturing |
Index entries (173)
- Die-casting dies manufacturing
- Cutting dies, metalworking, manufacturing
- Angle rings (i.e., a machine tool accessory) manufacturing
- Arbor presses, metalworking, manufacturing
- Assembly machines (i.e., wire making equipment) manufacturing