SIC 3399 — Primary Metal Products, NEC
Description & Classification
SIC code 3399 representing 'Primary Metal Products, NEC' is an industry category in the Standard Industrial Classification (SIC) system under U.S. OSHA and Federal procurement registers.
Modern NAICS Crosswalk
Trace the modern equivalent classifications in the 2022 North American Industry Classification System (NAICS) database:
- NAICS 331221 - Rolled Steel Shape Manufacturing (via SIC1987:3399→NAICS1997:331221→2002:331221→2007:331221→2012:331221→2017:331221→2022:331221)
- NAICS 332618 - Other Fabricated Wire Product Manufacturing (via SIC1987:3399→NAICS1997:332618→2002:332618→2007:332618→2012:332618→2017:332618→2022:332618)
- NAICS 331492 - Secondary Smelting, Refining, and Alloying of Nonferrous Metal (except Copper and Aluminum) (via SIC1987:3399→NAICS1997:331492→2002:331492→2007:331492→2012:331492→2017:331492→2022:331492)
- NAICS 331314 - Secondary Smelting and Alloying of Aluminum (via SIC1987:3399→NAICS1997:331314→2002:331314→2007:331314→2012:331314→2017:331314→2022:331314)
- NAICS 331420 - Copper Rolling, Drawing, Extruding, and Alloying (via SIC1987:3399→NAICS1997:331423→2002:331423→2007:331423→2012:331420→2017:331420→2022:331420)
- NAICS 332813 - Electroplating, Plating, Polishing, Anodizing, and Coloring (via SIC1987:3399→NAICS1997:332813→2002:332813→2007:332813→2012:332813→2017:332813→2022:332813)
Classification Details
| SIC Code | 3399 |
|---|---|
| Industry Title | Primary Metal Products, NEC |
| Division | Division D: Manufacturing |
| Major Group | Major Group 33: Primary Metal Industries |
| Source / Verified | US Census 1987 SIC Concordance / 2026-06-28 |
Related Resources & Compliance Guides
Further regulatory reference links for legacy SIC code 3399:
- SIC Codes Complete Compliance Guide — Detailed history and active legal applications of the SIC classification framework.
- Why Legacy SIC Codes Persist Guide — How credit systems and the SEC still rely on SIC metadata.
- SIC ↔ NAICS Crosswalk Tool — Trace industrial code conversions dynamically.
- SIC Major Group 33 Hub — View other legacy industries in this business division.
Related Industries in Major Group 33
Frequently Asked Questions (FAQ)
What industry does SIC code 3399 represent?
SIC 3399 is 'Primary Metal Products, NEC', a 4-digit Standard Industrial Classification (SIC) code under Major Group 33: Primary Metal Industries (Division D: Manufacturing); it maps to modern 2022 NAICS code(s): 331221 (Rolled Steel Shape Manufacturing), 332618 (Other Fabricated Wire Product Manufacturing).
What is the modern 2022 NAICS mapping for SIC 3399?
SIC code 3399 maps to modern NAICS codes: 331221 - Rolled Steel Shape Manufacturing, 332618 - Other Fabricated Wire Product Manufacturing, 331492 - Secondary Smelting, Refining, and Alloying of Nonferrous Metal (except Copper and Aluminum), 331314 - Secondary Smelting and Alloying of Aluminum, 331420 - Copper Rolling, Drawing, Extruding, and Alloying, 332813 - Electroplating, Plating, Polishing, Anodizing, and Coloring.