327331 — Concrete Block and Brick Manufacturing
Description
This U.S. industry comprises establishments primarily engaged in manufacturing concrete block and brick.
Overview Facts
| NAICS Code | 327331 |
|---|---|
| Industry Title | Concrete Block and Brick Manufacturing |
| SBA Size Standard | 500 employees |
| U.S. Establishments | 625 (Census CBP, 2023) |
| IRS PBA Code | 327300 (rolled-up match) |
| Sectors Hierarchy | Sector 31-33 → 327 → 3273 |
| Source / Verified | US Census 2022 NAICS Manual, Census CBP / 2026-06-28 |
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 3251 - Brick and Structural Clay Tile (via SIC1987:3251→NAICS1997:327331→2002:327331→2007:327331→2012:327331→2017:327331→2022:327331)
- SIC 3271 - Concrete Block and Brick (via SIC1987:3271→NAICS1997:327331→2002:327331→2007:327331→2012:327331→2017:327331→2022:327331)
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 3630 — Clay and Concrete Products Industries Machinery
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 327331:
- 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 3273
Frequently Asked Questions (FAQ)
Is 327331 a valid 2022 NAICS code?
NAICS 327331 is 'Concrete Block and Brick Manufacturing', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 500 employees.
What is the SBA size standard for NAICS 327331?
The SBA small business size standard for NAICS 327331 is 500 employees (based on employees).
What is the legacy SIC code mapping for 327331?
NAICS code 327331 maps to the legacy 1987 SIC codes: 3251 - Brick and Structural Clay Tile, 3271 - Concrete Block and Brick.