NAICS 2022 industry USA Verified: Census NAICS 2022 · 2026-01-01
33151
NAICS 33151 — Ferrous Metal Foundries
Ferrous Metal Foundries
NAICS 33151 is the NAICS industry code for ferrous metal foundries establishments in the United States. It forms part of the hierarchical North American Industry Classification System maintained by the Census Bureau.
Child industry codes in 33151 (3)
Exclusions & Cross-References
Activities classified under other official NAICS codes:
- producing iron and steel castings and further fabricating them, such as by machining and assembling (classified in the industry of the specified product)
Official data
| Feature | Description |
|---|---|
| Official name | North American Industry Classification System (NAICS) 2022 |
| Issuing authority | U.S. Census Bureau with OMB, Statistics Canada, and INEGI |
| Tax authority | Internal Revenue Service (IRS) |
| Purpose | Statistical business classification and federal contracting (SAM.gov, SBA standards) |
| Used in | SAM.gov registration, SBA size determinations, IRS tax classification, SEC EDGAR (via SIC crosswalk) |
| Active since | 2022 (current edition) |
| Hierarchy level | Sector (2-digit) |
| Source | https://www.census.gov/naics/ |
NAICS hierarchy path
Trace the classification from the broadest sector down to this national industry code.