NAICS 333996

Overview

The North American Industry Classification System (NAICS) is the framework Federal statistical agencies use to categorize U.S. business establishments for collecting, analyzing, and publishing economic data. Created under the Office of Management and Budget and adopted in 1997 to replace SIC, NAICS was jointly developed by the U.S., Canada, and Mexico to enable cross‑country comparability; the current statistical vintage is 2022. NAICS codes are also widely used in federal procurement planning and reporting. ¹
NAICS 333996 covers establishments primarily engaged in manufacturing fluid power (hydraulic and pneumatic) pumps and motors. It is part of Manufacturing (31–33) and distinguishes fluid power pumps/motors from general‑purpose pumps, air/gas compressors, and vehicle‑specific pumps via explicit cross‑references used by Federal data programs and acquisition coding. ²

See also on G2X:

• G2X — NAICS 333996 overview
• G2X — NAICS 333995 (Fluid Power Cylinder and Actuator Manufacturing)
• G2X — NAICS 333911 (Pump and Pumping Equipment Manufacturing)

What this NAICS covers

• Manufacture of hydraulic fluid power pumps. ²
• Manufacture of pneumatic fluid power pumps. ²
• Manufacture of hydraulic motors for fluid power systems. ²
• Manufacture of pneumatic motors for fluid power systems. ²
• Integrated fluid power pump‑motor units classified to fluid power manufacturing. ²
• Establishments whose primary output is fluid power pumps and motors regardless of application domain. ²

Related NAICS and PSC codes

Type	Code	Descriptor
NAICS	333995	Fluid Power Cylinder and Actuator Manufacturing
NAICS	333911	Pump and Pumping Equipment Manufacturing (except fluid power)
PSC	4320	Power and Hand Pumps
PSC	J043	Maintenance, Repair, and Rebuilding of Equipment—Pumps and Compressors

NAICS items are drawn from official cross‑references. ²
PSC descriptors are per the GSA Product and Service Code Manual. ³

Key exclusions and boundaries

• General‑purpose pumps (centrifugal, rotary, etc.) are classified in NAICS 333911, not in 333996. ²
• Air and gas compressors are classified in NAICS 333912. ²
• Fluid pumps for motor vehicles (e.g., oil, water, power‑steering pumps) fall under NAICS industry group 3363. ²

Frequently asked questions

• What products fall under NAICS 333996?
  Fluid power pumps and motors used in hydraulic and pneumatic systems are in scope, including hydraulic pumps, pneumatic pumps, hydraulic motors, and pneumatic motors produced by establishments primarily engaged in these activities. ²

• How does NAICS 333996 differ from 333911 and 333995?
  333996 covers fluid power pumps and motors. 333911 covers general‑purpose pumps (except fluid power). 333995 covers fluid power cylinders and actuators. ²

• Are hydraulic power units (HPUs) explicitly included?
  Official definitions specify fluid power pumps and motors but do not enumerate HPUs as a separate product class. Not specified by official sources ².

• Which PSCs are commonly associated with fluid power pumps and motors?
  Supplies often map to PSC 4320 (Power and Hand Pumps); service actions for pump/compressor equipment may use PSC J043 for maintenance and repair. Agency selection depends on supply versus service scope. ³

• Where can official size standards for NAICS 333996 be found?
  SBA maintains the Table of Small Business Size Standards and associated datasets; the current table provides the employee‑based threshold for each manufacturing NAICS, including 333996. Refer to SBA’s table for the exact threshold. ⁴

Useful resources

• Census — NAICS guidance and 2022 vintage overview. ¹
• Census — NAICS 333996 definition and cross‑references (Manufacturing 31–33 archive). ²
• SBA — Table of Small Business Size Standards (effective March 17, 2023). ⁴
• GSA — Product and Service Code (PSC) Manual. ³

References

1. U.S. Census Bureau — Economic Census 2022 Guidance: NAICS Codes & Understanding Industry Classification Systems https://www.census.gov/programs-surveys/economic-census/year/2022/technical-documentation/code-lists/understanding-naics-redirect.html
2. U.S. Census Bureau — NAICS Manufacturing (31–33) archive including 333996 definition and cross‑references https://www.census.gov/naics/resources/archives/sect31-33.html
3. GSA Acquisition — Product and Service Code Manual (April 2025) https://www.acquisition.gov/psc-manual
4. U.S. Small Business Administration — Table of Small Business Size Standards (effective March 17, 2023) https://www.sba.gov/document/support--table-size-standards