335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing

Official definition

This U.S. industry comprises establishments primarily engaged in manufacturing industrial and commercial electric apparatus and other equipment (except lighting equipment, household appliances, transformers, motors, generators, switchgear, relays, industrial controls, batteries, communication and energy wire and cable, wiring devices, and carbon and graphite products). Examples of products made by these establishments are power converters (i.e., AC to DC and DC to AC), power supplies, surge suppressors, and similar equipment for industrial-type and consumer-type equipment.

Examples Census gives

• Appliance cords made from purchased insulated wire
• Battery chargers, solid-state, manufacturing
• Door opening and closing devices, electrical, manufacturing
• Electric bells manufacturing
• Extension cords made from purchased insulated wire
• Inverters manufacturing
• Surge suppressers manufacturing
• Uninterruptible power supplies (UPS) manufacturing

Source: US Census Bureau, 2022 NAICS descriptions.

When to use a different code

Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:

• Manufacturing lighting equipment are classified in Industry 33513, Electric Lighting Equipment Manufacturing.
• Manufacturing household-type appliances are classified in Industry Group 3352, Household Appliance Manufacturing.
• Manufacturing transformers, motors, generators, switchgear, relays, and industrial controls are classified in Industry 33531, Electrical Equipment Manufacturing.
• Manufacturing primary and storage batteries are classified in Industry 335910, Battery Manufacturing.
• Manufacturing communication and energy wire and cable from purchased wire or fiber optic strand are classified in Industry 33592, Communication and Energy Wire and Cable Manufacturing.
• Manufacturing current-carrying and noncurrent-carrying wiring devices are classified in Industry 33593, Wiring Device Manufacturing.
• Manufacturing electronic component-type rectifiers (except semiconductor) are classified in U.S. Industry 334419, Other Electronic Component Manufacturing.
• Manufacturing semiconductor rectifiers, voltage regulating integrated circuits, power converting integrated circuits, and similar semiconductor devices are classified in U.S. Industry 334413, Semiconductor and Related Device Manufacturing.
• Manufacturing electronic component-type capacitors and condensers are classified in U.S. Industry 334416, Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing.
• Manufacturing carbon and graphite products are classified in U.S. Industry 335991, Carbon and Graphite Product Manufacturing.
• Manufacturing equipment incorporating lasers are classified in the Manufacturing sector based on the associated production process of the finished equipment.

Source: US Census Bureau, 2022 NAICS cross-references.

Activities listed under 335999

The Census index assigns these 40 activities to this code. If your business matches one, this is your code.

• Amplifiers, magnetic, pulse, and maser, manufacturing
• Appliance cords made from purchased insulated wire
• Atom smashers (i.e., particle accelerators) manufacturing
• Battery chargers, solid-state, manufacturing
• Bells, electric, manufacturing
• Betatrons manufacturing
• Capacitors (except electronic), fixed and variable, manufacturing
• Cathodic protection equipment manufacturing
• Chimes, electric, manufacturing
• Cleaning equipment, ultrasonic (except dental, medical), manufacturing
• Condensers (except electronic), fixed and variable, manufacturing
• Cyclotrons manufacturing
• Door opening and closing devices, electrical, manufacturing
• Electric bells manufacturing
• Electric fence chargers manufacturing
• Electrochemical generators (i.e., fuel cells) manufacturing
• Electron linear accelerators manufacturing
• Electrostatic particle accelerators manufacturing
• Extension cords made from purchased insulated wire
• Fuel cells, electrochemical generators, manufacturing
• Garage door openers manufacturing
• Gongs, electric, manufacturing
• Inverters, solid-state, manufacturing
• Linear accelerators manufacturing
• Maser (i.e., microwave amplification by stimulated emission of radiation) amplifiers manufacturing
• Mercury arc rectifiers (i.e., electrical apparatus) manufacturing
• Particle accelerators, high-voltage, manufacturing
• Photovoltaic panels made from purchased cells
• Power converter units (i.e., AC to DC), static, manufacturing
• Power supplies, regulated and unregulated, manufacturing
• Rectifiers (except electronic component-type, semiconductor) manufacturing
• Semiconductor battery chargers manufacturing
• Semiconductor high-voltage power supplies manufacturing
• Series capacitors (except electronic) manufacturing
• Surge suppressors manufacturing
• Thermoelectric generators manufacturing
• Ultrasonic cleaning equipment (except dental, medical) manufacturing
• Ultrasonic generators sold separately for inclusion in tools and equipment manufacturing
• Uninterruptible power supplies (UPS) manufacturing
• UPS (uninterruptible power supplies) manufacturing

Source: US Census Bureau, 2022 NAICS index file.

SBA size standard for 335999

To count as a small business for SBA loans and federal contracts under NAICS 335999, your business (including affiliates) must not exceed 600 employees. Check your business.

Source: SBA table of size standards, effective March 17, 2023.

Closest UK SIC 2007 codes

There is no official one-to-one link between NAICS and UK SIC. These codes share the same international class (ISIC Rev. 4: 2790), so treat them as a starting point and check the definition.

• 27900Manufacture of other electrical equipmentUK SIC

Built from Census concordances 2022→2017 NAICS and 2017 NAICS→ISIC Rev. 4.

Similar codes to compare

• 335991Carbon and Graphite Product Manufacturing