327993 — Mineral Wool Manufacturing
NAICS 327993 is 'Mineral Wool Manufacturing', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 1,500 employees.
Description
This U.S. industry comprises establishments primarily engaged in manufacturing mineral wool and mineral wool (i.e., fiberglass) insulation products made of such siliceous materials as rock, slag, and glass or combinations thereof.
Exclusions & Cross-References
- Establishments primarily engaged in manufacturing metallic scouring pads and steel wool are classified in U.S.
- Industry 332999, All Other Miscellaneous Fabricated Metal Product Manufacturing.
Overview Facts
| NAICS Code | 327993 |
|---|---|
| Industry Title | Mineral Wool Manufacturing |
| SBA Size Standard | 1,500 employees |
| IRS PBA Code | 327900 (rolled-up match) |
| Sectors Hierarchy | Sector 31-33 → 327 → 3279 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
NAICS Structure: 327993
National Industry
Sector (2)
31-33
Manufacturing
Subsector (3)
327
Nonmetallic Mineral Product Manufacturing
Industry Group (4)
3279
Other Nonmetallic Mineral Product Manufacturing
Industry (5)
32799
All Other Nonmetallic Mineral Product Manufacturing
National Industry (6)
327993
Mineral Wool Manufacturing
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 3296 - Mineral Wool (via SIC1987:3296→NAICS1997:327993→2002:327993→2007:327993→2012:327993→2017:327993→2022:327993)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 327993:
- 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.
- 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.
Related Industries in 3279
Frequently Asked Questions (FAQ)
Is 327993 a valid 2022 NAICS code?
NAICS 327993 is 'Mineral Wool Manufacturing', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 1,500 employees.
What is the SBA size standard for NAICS 327993?
The SBA small business size standard for NAICS 327993 is 1,500 employees (based on employees).
What is the legacy SIC code mapping for 327993?
NAICS code 327993 maps to the legacy 1987 SIC codes: 3296 - Mineral Wool.