333519 — Rolling Mill and Other Metalworking Machinery Manufacturing
Description
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) (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
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
Exclusions & Cross-References
- Manufacturing industrial molds--are classified in U.S. Industry 333511, Industrial Mold Manufacturing;
- Manufacturing metal cutting and metal forming machine tools--are classified in U.S. Industry 333517,
- Machine Tool Manufacturing;
- Manufacturing special dies and tools, die sets, jigs, and fixtures--are classified in U.S. Industry 333514,
- Special Die and Tool, Die Set, Jig, and Fixture Manufacturing; and
- Manufacturing accessories and attachments for metal cutting and forming machine tools (except saw
- blades)--are classified in U.S. Industry 333515, Cutting Tool and Machine Tool Accessory Manufacturing.
Overview Facts
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 3547 - Rolling Mill Machinery and Equipment (via SIC1987:3547→NAICS1997:333516→2002:333516→2007:333516→2012:333519→2017:333519→2022:333519)
- SIC 3549 - Metalworking Machinery, NEC (via SIC1987:3549→NAICS1997:333518→2002:333518→2007:333518→2012:333519→2017:333519→2022:333519)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC 3422 — Rolling Mills and Drawing Machines
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 333519 valid in 2022? ▾
Yes, 333519 is a valid 6-digit 2022 NAICS national industry code representing 'Rolling Mill and Other Metalworking Machinery Manufacturing' under Sector 31-33 in the official classification index.
What is the SBA size standard for NAICS code 333519? ▾
The Small Business Administration (SBA) has established a small business size standard of 500 employees for NAICS code 333519 (Rolling Mill and Other Metalworking Machinery Manufacturing), calculated based on employees.
What is the legacy SIC equivalent for NAICS 333519? ▾
According to official Census Bureau concordance tables, NAICS code 333519 (Rolling Mill and Other Metalworking Machinery Manufacturing) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 3547 - Rolling Mill Machinery and Equipment, 3549 - Metalworking Machinery, NEC.
Related Pages & Tools
Further regulatory reference links for NAICS code 333519:
- Sector 31-33 Directory Hub — List of related industries in the Manufacturing sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- NAICS 333519 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Rolling Mill and Other Metalworking Machinery Manufacturing).
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.