NAICS 333998: All Other Miscellaneous General Purpose Machinery Manufacturing
This U.S. industry comprises establishments primarily engaged in manufacturing general purpose machinery (except ventilating, heating, air-conditioning, and commercial refrigeration equipment; metalworking machinery; engines, turbines, and power transmission equipment; pumps and compressors; material handling equipment; power-driven handtools; welding and soldering equipment; packaging machinery; industrial process furnaces and ovens; fluid power cylinders and actuators; and fluid power pumps and motors).
This U.S. industry comprises establishments primarily engaged in manufacturing general purpose machinery (except ventilating, heating, air-conditioning, and commercial refrigeration equipment; metalworking machinery; engines, turbines, and power transmission equipment; pumps and compressors; material handling equipment; power-driven handtools; welding and soldering equipment; packaging machinery; industrial process furnaces and ovens; fluid power cylinders and actuators; and fluid power pumps and motors).
Centrifuges, industrial and laboratory-type, manufacturing
Cremating ovens manufacturing
General purpose-type sieves and screening equipment manufacturing
Hydraulic and pneumatic jacks manufacturing
Industrial and general purpose-type filters (except internal combustion engine, warm air furnace) manufacturing
Scales and balances manufacturing
Not in this code
Establishments primarily engaged in manufacturing ventilating, heating, air-conditioning (except motor vehicle), and commercial refrigeration equipment are classified in Industry 33341, Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing.
Establishments primarily engaged in manufacturing motor vehicle air-conditioning systems and compressors are classified in Industry 336390, Other Motor Vehicle Parts Manufacturing.
Establishments primarily engaged in manufacturing material handling equipment are classified in Industry 33392, Material Handling Equipment Manufacturing.
Establishments primarily engaged in manufacturing power-driven handtools are classified in U.S. Industry 333991, Power-Driven Handtool Manufacturing.
Establishments primarily engaged in manufacturing welding and soldering equipment (except handheld soldering irons) are classified in U.S. Industry 333992, Welding and Soldering Equipment Manufacturing.
Establishments primarily engaged in manufacturing packaging machinery are classified in U.S. Industry 333993, Packaging Machinery Manufacturing.
Establishments primarily engaged in manufacturing bakery ovens are classified in U.S. Industry 333241, Food Product Machinery Manufacturing.
Establishments primarily engaged in manufacturing cement, wood, and chemical kilns are classified in U.S. Industry 333248, All Other Industrial Machinery Manufacturing.
Establishments primarily engaged in manufacturing industrial process furnaces and ovens (except bakery) are classified in U.S. Industry 333994, Industrial Process Furnace and Oven Manufacturing.
Establishments primarily engaged in manufacturing fluid power cylinders and actuators are classified in U.S. Industry 333995, Fluid Power Cylinder and Actuator Manufacturing.
Establishments primarily engaged in manufacturing fluid power pumps and motors are classified in U.S. Industry 333996, Fluid Power Pump and Motor Manufacturing.
Establishments primarily engaged in manufacturing carnival and amusement park equipment, automotive maintenance equipment, and coin- or card-operated vending machines are classified in Industry 333310, Commercial and Service Industry Machinery Manufacturing.
Establishments primarily engaged in manufacturing motor vehicle engine filters and pumps are classified in Industry Group 3363, Motor Vehicle Parts Manufacturing.
Establishments primarily engaged in manufacturing mechanical jacks are classified in U.S. Industry 332216, Saw Blade and Handtool Manufacturing.
SBA size standard
A business is small under NAICS 333998 if it has no more than 700 employees (averaged over the last 24 months, including affiliates).
Source: SBA Table of Size Standards, effective 2023-03-17. Always check the size standard printed in the solicitation itself.
Who buys it
Departments that posted the most NAICS 333998 solicitations in the last two years:
Department of Defense · 712 solicitations
Homeland Security · 19 solicitations
National Aeronautics and Space Administration · 6 solicitations
43--FILTER,FLUID · Department of Defense · posted September 28, 2026
MONITOR,20.1 inch · Department of Defense · posted September 28, 2026
43--FILTER element,fluid · Department of Defense · posted September 28, 2026
43--SEPARATOR,WATER,LIQUID · Department of Defense · posted September 27, 2026
43--FILTER assembly,fluid · Department of Defense · posted September 27, 2026
Portable Mainline Inspection System (Pipe Cameras) · Agriculture · posted September 25, 2026
MECA500 Robot, Power Supply, Training Package, and Calibration · Energy · New York · posted September 25, 2026
Pwa, backplane · Department of Defense · posted September 25, 2026
Do this kind of work?
Send XL Eagle your price on an open all other miscellaneous general purpose machinery manufacturing job. We write and submit the bid under our registrations. If we win, you do the work at your price. No fees.
NAICS 333998 is All Other Miscellaneous General Purpose Machinery Manufacturing. This U.S. industry comprises establishments primarily engaged in manufacturing general purpose machinery (except ventilating, heating, air-conditioning, and commercial refrigeration equipment; metalworking machinery; engines, turbines, and power transmission equipment; pumps and compressors; material handling equipment; power-driven handtools; welding and soldering equipment; packaging machinery; industrial process furnaces and ovens; fluid power cylinders and actuators; and fluid power pumps and motors).
What is the SBA size standard for NAICS 333998?
The size standard for NAICS 333998 is 700 employees. Firms at or under it count as small businesses for contracts assigned this code.
Are there government contracts for all other miscellaneous general purpose machinery manufacturing?
Yes. 36 government contracts are open under NAICS 333998 right now, and 417 were posted in the last 12 months.
Can I bid on NAICS 333998 contracts without registering in SAM.gov?
You need an active SAM.gov registration to win a federal contract in your own name. If you would rather skip that, XL Eagle can bid as the prime contractor using your price, and you do the work as our subcontractor.
XL Eagle