339950 — Sign Manufacturing
Description
This industry comprises establishments primarily engaged in manufacturing signs and related displays of all materials (except printing paper and paperboard signs, notices, displays) (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Exclusions & Cross-References
- Printing advertising specialties or printing paper and paperboard signs, notices, and displays--are classified
- in Industry 32311, Printing;
- Manufacturing and printing advertising specialties--are classified in the Manufacturing sector according to
- the products made;
- Manufacturing die-cut paperboard displays--are classified in U.S. Industry 322299, All Other Converted
- Paper Product Manufacturing; and
- Sign lettering and painting--are classified in Industry 541890, Other Services Related to Advertising.
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 3993 - Signs and Advertising Specialties (via SIC1987:3993→NAICS1997:33995→2002:339950→2007:339950→2012:339950→2017:339950→2022:339950)
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 9905 — Signs, Advertising Displays, and Identification Plates
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 339950 valid in 2022? ▾
Yes, 339950 is a valid 6-digit 2022 NAICS national industry code representing 'Sign Manufacturing' under Sector 31-33 in the official classification index.
What is the SBA size standard for NAICS code 339950? ▾
The Small Business Administration (SBA) has established a small business size standard of 500 employees for NAICS code 339950 (Sign Manufacturing), calculated based on employees.
What is the legacy SIC equivalent for NAICS 339950? ▾
According to official Census Bureau concordance tables, NAICS code 339950 (Sign Manufacturing) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 3993 - Signs and Advertising Specialties.
Related Pages & Tools
Further regulatory reference links for NAICS code 339950:
- 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 339950 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Sign Manufacturing).
- 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.