NAICS Code 333519 — Rolling Mill and Other Metalworking Machinery Manufacturing

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is one of 5 national industries under 33351 (Metalworking Machinery Manufacturing).

Code	333519
Title	Rolling Mill and Other Metalworking Machinery Manufacturing
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	500 employees

Official definition (2022 NAICS)

This U.S. industry comprises establishments primarily engaged in manufacturing rolling mill machinery and equipment and/or other metalworking machinery (except industrial molds; special dies and tools, die sets, jigs, and fixtures; cutting tools and machine tool accessories; and machine tools).

Illustrative Examples:

Assembly machines (i.e., wire making equipment) manufacturing

Cradle assembly machinery (i.e., wire making equipment) manufacturing

Metalworking coil winding and cutting machinery manufacturing

Rolling mill roll machines, metalworking, manufacturing

Wire drawing and fabricating machinery and equipment (except dies) manufacturing

Is a business under 333519 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 333519 qualifies as a small business if it does not exceed 500 employees. Small-business status determines eligibility for federal set-aside contracts, SAM.gov certifications and SBA loan programs — employee count is averaged over the latest 24 months.

Where 333519 sits in the hierarchy

Level	Code	Title
Sector	31-33	Manufacturing
Subsector	333	Machinery Manufacturing
Industry Group	3335	Metalworking Machinery Manufacturing
NAICS Industry	33351	Metalworking Machinery Manufacturing
National Industry	333519	Rolling Mill and Other Metalworking Machinery Manufacturing

No direct SIC mapping is shown for this code: it was introduced or redefined after the official 1987 SIC ↔ 2002 NAICS concordance. Use the crosswalk tool to explore related legacy codes.

Related National Industry codes

• 333511 — Industrial Mold Manufacturing
• 333514 — Special Die and Tool, Die Set, Jig, and Fixture Manufacturing
• 333515 — Cutting Tool and Machine Tool Accessory Manufacturing
• 333517 — Machine Tool 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.