NAICS Code 334210 — Telephone Apparatus Manufacturing

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is the only national industry under 33421 (Telephone Apparatus Manufacturing).

Code	334210
Title	Telephone Apparatus Manufacturing
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	1,250 employees

Official definition (2022 NAICS)

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.

Is a business under 334210 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 334210 qualifies as a small business if it does not exceed 1,250 employees. Small-business status determines eligibility for federal set-aside contracts, SAM.gov certifications and SBA loan programs — employee count is averaged over the latest 24 months.

Where 334210 sits in the hierarchy

Level	Code	Title
Sector	31-33	Manufacturing
Subsector	334	Computer and Electronic Product Manufacturing
Industry Group	3342	Communications Equipment Manufacturing
NAICS Industry	33421	Telephone Apparatus Manufacturing
National Industry	334210	Telephone Apparatus Manufacturing

Related SIC codes

Via the official U.S. Census concordance (1987 SIC ↔ NAICS), shown only where the industry definition is unchanged in NAICS 2022.

SIC code	Title
3661	Telephone and Telegraph Apparatus

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.