NAICS Code 333912 — Air and Gas Compressor Manufacturing

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is one of 2 national industries under 33391 (Pump and Compressor Manufacturing).

Code	333912
Title	Air and Gas Compressor Manufacturing
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	1,000 employees

Official definition (2022 NAICS)

This U.S. industry comprises establishments primarily engaged in manufacturing general purpose air and gas compressors, such as reciprocating compressors, centrifugal compressors, vacuum pumps (except laboratory), and nonagricultural spraying and dusting compressors and spray gun units.

Is a business under 333912 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 333912 qualifies as a small business if it does not exceed 1,000 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 333912 sits in the hierarchy

Level	Code	Title
Sector	31-33	Manufacturing
Subsector	333	Machinery Manufacturing
Industry Group	3339	Other General Purpose Machinery Manufacturing
NAICS Industry	33391	Pump and Compressor Manufacturing
National Industry	333912	Air and Gas Compressor 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
3563	Air and Gas Compressors

Related National Industry codes

• 333914 — Measuring, Dispensing, and Other Pumping Equipment Manufacturing

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.