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    335999 - All Other Miscellaneous Electrical Equipment and Component Manufacturing

    Introduction

    If you're involved in the manufacturing of specialized electrical components that don’t quite fit into the standard categories, NAICS code 335999 is your go-to classification. Known as All Other Miscellaneous Electrical Equipment and Component Manufacturing, this code represents a vital niche in the manufacturing sector, covering diverse and highly technical electrical products. Whether you’re a government contractor, supplier, or industry analyst, understanding NAICS 335999 is essential for business development, compliance, and market research.

    What is NAICS Code 335999?

    NAICS 335999 encompasses establishments primarily engaged in manufacturing electrical equipment and components that are not classified elsewhere within the electrical and electronic manufacturing industry sectors. This classification includes a broad range of specialized electrical products such as:

    • Electrical wiring devices
    • Electrical connectors
    • Various other miscellaneous electrical components

    The industry is diverse, crafting highly specialized devices often used in advanced technologies, industrial applications, and complex electrical systems.

    Sector and Typical Business Activities

    • Sector: Manufacturing
    • Primary focus: Fabrication of miscellaneous electrical equipment and specialized components necessary for electrical systems, instrumentation, and industrial machinery that don’t fall into other NAICS subcategories.

    Typical business activities include:

    • Manufacturing electrical wiring devices
    • Producing electrical connectors
    • Creating miscellaneous electrical components such as pulse amplifiers, battery chargers, ultrasonic cleaning devices, and power supplies

    Size Standards for Eligibility

    According to the U.S. Small Business Administration (SBA), businesses classified under NAICS 335999 are considered small if they have 600 or fewer employees. This size standard is critical for eligibility in federal contracting opportunities and subcontracting programs.

    Examples of Businesses under NAICS 335999

    • Companies manufacturing electrical wiring devices like switches, sockets, and plugs
    • Businesses producing electrical connectors used in communications, power systems, or electronic devices
    • Firms specializing in manufacturing miscellaneous electrical components, such as ultrasonic cleaning equipment, power supplies, or specialized rectifiers

    Complete Code Details Table for NAICS 335999

    Electrical Equipment & Component Type Description
    Amplifiers, magnetic, pulse, and maser Manufacturing of specialized amplifiers
    Appliance cords made from purchased insulated wire Production of appliance power cords
    Atom smashers (particle accelerators) Manufacturing of high-energy particle accelerators
    Battery chargers, solid-state Solid-state battery chargers manufacturing
    Bells, electric Manufacturing of electric bells and chimes
    Betatrons Production of betatron devices
    Capacitors (except electronic), fixed and variable Capacitors manufacturing (non-electronic types)
    Cathodic protection equipment Equipment to prevent corrosion via cathodic protection
    Chimes, electric Manufacturing of electric chimes
    Ultrasonic cleaning equipment (except dental, medical) Ultrasonic cleaning tool manufacturing
    Condensers (except electronic), fixed and variable Production of condensers used in electrical circuits
    Cyclotrons Manufacturing cyclotron particle accelerators
    Door opening and closing devices, electrical Manufacturing electrical garage door openers and similar devices
    Electrochemical generators (fuel cells) Fabrication of fuel cells and related electrochemical devices
    Electron linear accelerators Manufacturing electron beam accelerators
    Electrostatic particle accelerators Production of electrostatic accelerators
    Extension cords made from purchased insulated wire Manufacturing extension cords
    Fuel cells, electrochemical generators Fuel cell production
    Garage door openers Electrical garage door opener manufacturing
    Gongs, electric Manufacturing electric gongs
    Inverters, solid-state Solid-state inverter device manufacturing
    Linear accelerators Manufacturing of linear accelerators
    Maser amplifiers Microwave amplification devices manufacturing
    Mercury arc rectifiers Manufacturing mercury arc rectifiers
    Particle accelerators, high-voltage High-voltage particle accelerator manufacturing
    Photovoltaic panels made from purchased cells Assembly of solar panels using purchased photovoltaic cells
    Power converter units (AC to DC), static Manufacturing static power converters
    Power supplies, regulated and unregulated Production of regulated and unregulated power supplies
    Rectifiers (except electronic component-type, semiconductor) Manufacturing non-semiconductor rectifiers
    Semiconductor battery chargers Battery charger manufacturing with semiconductor components
    Semiconductor high-voltage power supplies High-voltage power supply production with semiconductors
    Series capacitors (except electronic) Series capacitors manufacturing (non-electronic)
    Surge suppressors Manufacturing surge protection devices
    Thermoelectric generators Production of thermoelectric generating units
    Ultrasonic generators sold separately Ultrasonic generator manufacturing for integration
    Uninterruptible power supplies (UPS) Manufacturing UPS systems

    Frequently Asked Questions (FAQ)

    What kind of products does NAICS 335999 include?

    NAICS 335999 includes miscellaneous electrical equipment and components not classified in other categories, such as electrical wiring devices, connectors, pulse amplifiers, ultrasonic cleaning equipment, and power supplies.

    Who uses NAICS code 335999?

    Manufacturers, suppliers, government contractors, and researchers in the manufacturing sector primarily use this code to classify and identify businesses engaged in producing specialized electrical components.

    What is the SBA size standard for this NAICS code?

    The SBA sets the small business size standard for NAICS 335999 at 600 employees or fewer.

    Is photovaltaic panel assembly included under NAICS 335999?

    Yes, photovoltaic panels made from purchased cells fall under this category within miscellaneous electrical equipment manufacturing.

    Can businesses manufacturing particle accelerators use NAICS 335999?

    Yes, manufacturing of particle accelerators—including atom smashers, cyclotrons, and linear accelerators—is classified under NAICS 335999.


    Understanding NAICS code 335999 is essential for manufacturers and contractors specializing in niche electrical equipment. This code helps businesses identify their place in the market and qualify for programs and contracts tailored to their size and industry focus. Whether you're building components for emerging technologies or supplying advanced electrical devices, NAICS 335999 defines your manufacturing space.