334210 — Telephone Apparatus Manufacturing
Description
This industry comprises establishments primarily engaged in manufacturing wire telephone and data communications equipment. These products may be stand-alone or board-level components of a larger system. Examples of products made by these establishments are central office switching equipment, cordless and wire telephones (except cellular), PBX equipment, telephone answering machines, LAN modems, multi-user modems, and other data communications equipment, such as bridges, routers, and gateways.
Exclusions & Cross-References
- Manufacturing internal and external computer modems, single-user fax/modems, and electronic
- components used in telephone apparatus--are classified in Industry 33441, Semiconductor and Other
- Electronic Component Manufacturing; and
- Manufacturing cellular telephones--are classified in Industry 334220, Radio and Television Broadcasting
- and Wireless Communications Equipment Manufacturing.
Overview Facts
| NAICS Code | 334210 |
|---|---|
| Industry Title | Telephone Apparatus Manufacturing |
| SBA Size Standard | 1,250 employees |
| IRS PBA Code | 334200 (rolled-up match) |
| Sectors Hierarchy | Sector 31-33 → 334 → 3342 |
| Source / Verified | US Census 2022 NAICS Manual / 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 3661 - Telephone and Telegraph Apparatus (via SIC1987:3661→NAICS1997:33421→2002:334210→2007:334210→2012:334210→2017:334210→2022:334210)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 334210:
- 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 3342
Frequently Asked Questions (FAQ)
Is 334210 a valid 2022 NAICS code?
NAICS 334210 is 'Telephone Apparatus Manufacturing', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 1,250 employees.
What is the SBA size standard for NAICS 334210?
The SBA small business size standard for NAICS 334210 is 1,250 employees (based on employees).
What is the legacy SIC code mapping for 334210?
NAICS code 334210 maps to the legacy 1987 SIC codes: 3661 - Telephone and Telegraph Apparatus.