331529 — Other Nonferrous Metal Foundries (except Die-Casting)
Description
This U.S. industry comprises establishments primarily engaged in pouring molten nonferrous metals (except aluminum) into molds to manufacture nonferrous castings (except nonferrous die-castings and aluminum castings). Establishments in this industry purchase nonferrous metals, such as copper, nickel, lead, and zinc, made in other establishments (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Exclusions & Cross-References
- Manufacturing nonferrous die-castings--are classified in U.S. Industry 331523, Nonferrous Metal Die-
- Casting Foundries;
- Pouring molten aluminum into molds to manufacture aluminum castings--are classified in U.S. Industry
- 331524, Aluminum Foundries (except Die-Casting); and
- Manufacturing nonferrous castings and further manufacturing them into finished products--are classified
- based on the specific finished product.
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 3366 - Copper Foundries (via SIC1987:3366→NAICS1997:331525→2002:331525→2007:331525→2012:331529→2017:331529→2022:331529)
- SIC 3369 - Nonferrous Foundries, Except Aluminum and Copper (via SIC1987:3369→NAICS1997:331528→2002:331528→2007:331528→2012:331529→2017:331529→2022:331529)
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 3680 — Foundry Machinery, Related Equipment and Supplies.
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 331529 valid in 2022? ▾
Yes, 331529 is a valid 6-digit 2022 NAICS national industry code representing 'Other Nonferrous Metal Foundries (except Die-Casting)' under Sector 31-33 in the official classification index.
What is the SBA size standard for NAICS code 331529? ▾
The Small Business Administration (SBA) has established a small business size standard of 500 employees for NAICS code 331529 (Other Nonferrous Metal Foundries (except Die-Casting)), calculated based on employees.
What is the legacy SIC equivalent for NAICS 331529? ▾
According to official Census Bureau concordance tables, NAICS code 331529 (Other Nonferrous Metal Foundries (except Die-Casting)) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 3366 - Copper Foundries, 3369 - Nonferrous Foundries, Except Aluminum and Copper.
Related Pages & Tools
Further regulatory reference links for NAICS code 331529:
- 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 331529 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Other Nonferrous Metal Foundries (except Die-Casting)).
- 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.