Major Group 33: Primary Metal Industries (OSHA SIC Manual)
Reference listings for legacy four-digit industries classified under Major Group 33: Primary Metal Industries (Division D: Manufacturing) in the official public-domain OSHA SIC Manual. Select a code below for modern NAICS equivalents.
Legacy Industries under Major Group 33
| Code | Industry Title | Division |
|---|---|---|
| 3312 | Steel Works, Blast Furnaces | Division D: Manufacturing |
| 3313 | Electrometallurgical Products, Except Steel | Division D: Manufacturing |
| 3315 | Steel Wiredrawing and Steel Nails and Spikes | Division D: Manufacturing |
| 3316 | Cold-Rolled Steel Sheet, Strip, and Bars | Division D: Manufacturing |
| 3317 | Steel Pipe and Tubes | Division D: Manufacturing |
| 3321 | Gray and Ductile Iron Foundries | Division D: Manufacturing |
| 3322 | Malleable Iron Foundries | Division D: Manufacturing |
| 3324 | Steel Investment Foundries | Division D: Manufacturing |
| 3325 | Steel Foundries, NEC | Division D: Manufacturing |
| 3331 | Primary Smelting and Refining of Copper | Division D: Manufacturing |
💡 Sector Guidance
OSHA safety rules: Workplace safety inspections and recordkeeping log exemptions are often target-filtered using legacy Major Group 33 (Major Group 33: Primary Metal Industries) classifications. If your facility performs mixed activities, identify the primary group representing the largest labor share to determine log requirements.
Legacy Industries in this Major Group (26)
Frequently Asked Questions
What is the OSHA SIC Manual for Major Group 33? ▾
SIC Major Group 33 represents 'Major Group 33: Primary Metal Industries' under the official public-domain OSHA SIC Manual (1987 Standard Industrial Classification). It classifies business activities based on product outputs.
How many legacy industries belong to Major Group 33? ▾
There are 26 individual 4-digit SIC industries listed under Major Group 33 in our directory, matching the final 1987 OSHA SIC manual.
Is SIC still used by OSHA and regulatory agencies? ▾
Yes. OSHA safety recordkeeping regulations (29 CFR Part 1904) reference legacy SIC Major Group 33 codes to determine workplace safety log exemptions. Credit agencies (Dun & Bradstreet) and SEC EDGAR public filings also maintain active SIC records.
What is the modern 2022 NAICS equivalent for Major Group 33? ▾
The legacy classifications under Major Group 33 map to various modern 2022 NAICS industries. You can check individual four-digit code pages for exact concordance links.
What is the difference between Major Group 33 and a NAICS sector? ▾
Major Group 33 is a legacy 2-digit SIC category grouping by product output (what businesses sell), whereas modern NAICS sectors group establishments based on production processes (how businesses work).
Does the SEC EDGAR search support filtering by Major Group 33? ▾
Yes, financial researchers can query the SEC EDGAR database using the Major Group 33 classification to locate all reporting public companies operating in this economic segment.
Are the classifications in Major Group 33 uniform nationwide? ▾
Yes, Major Group 33 is part of the 1987 federal SIC standard and remains uniform nationwide for administrative and historical consistency.
How do I select the primary SIC code under Major Group 33? ▾
When classifying an establishment under Major Group 33 (Major Group 33: Primary Metal Industries), identify the 4-digit industry representing the largest share of operating labor hours or gross revenue for OSHA and SEC EDGAR filing compliance.
Sources & References
- U.S. Occupational Safety and Health Administration (OSHA): Standard Industrial Classification (SIC) Manual
- U.S. Census Bureau: North American Industry Classification System (NAICS) Manual
- U.S. Securities and Exchange Commission (SEC): SEC EDGAR Filer Standard Industrial Classification Codes
- U.S. Small Business Administration (SBA): Table of Small Business Size Standards
- Electronic Code of Federal Regulations (eCFR): 13 CFR Part 121 - Small Business Size Regulations
- U.S. General Services Administration (GSA): System for Award Management (SAM.gov) Unique Entity ID Guide
- Defense Logistics Agency: Defense Logistics Agency (DLA) CAGE Search and Registration
- United Nations Statistics Division: International Standard Industrial Classification of All Economic Activities (ISIC)
- Internal Revenue Service (IRS): Instructions for Schedule C (Form 1040) Principal Business Activity (PBA) Codes
- Acquisition.gov: Federal Acquisition Regulation (FAR) Part 19 - Small Business Programs