NAICS 335991 - Carbon and Graphite Product Manufacturing
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What is NAICS 335991
NAICS code 335991 covers establishments primarily engaged in manufacturing carbon, graphite, and metal-graphite products. This includes carbon and graphite brushes and brush stock, electrodes used for thermal and electrolytic applications, carbon and graphite fibers, and other related products. Businesses operating in this sector typically specialize in producing advanced materials critical for various industrial, energy, and technological applications. Manufacturers under this code often serve markets requiring precision-engineered carbon components that meet stringent performance standards. Government agencies frequently contract these products for use in defense systems, energy infrastructure, aerospace, and advanced manufacturing sectors, where reliability and material properties are paramount. These products enable efficient electrical conduction, high-temperature resistance, and durability in extreme environments, making them indispensable for federal projects and government-supported research initiatives.
Industry Classification for NAICS 335991
This U.S. industry comprises establishments primarily engaged in manufacturing carbon, graphite, and metal-graphite brushes and brush stock; carbon or graphite electrodes for thermal and electrolytic uses; carbon and graphite fibers; and other carbon, graphite, and metal-graphite products.
Breakdown for NAICS 335991
- Manufacture of carbon, graphite, and metal-graphite brushes and brush stock.
- Production of carbon and graphite electrodes for thermal and electrolytic applications.
- Fabrication of carbon and graphite fibers used in high-performance composites.
- Includes specialized products for aerospace, defense, and energy industries.
- Typical size standards classify small businesses based on employee count or revenue thresholds.
- Contracts often require compliance with military and industry quality standards.
Included Activities for NAICS 335991
- Manufacturing carbon and graphite brushes for electrical machines.
- Producing electrodes for use in thermal and electrolytic processes.
- Fabricating carbon and graphite fibers for composite materials.
- Customizing metal-graphite products for specialized industrial applications.
- Testing and quality assurance of carbon-based components to meet government specifications.
- Research and development of advanced carbon materials for defense and aerospace.
- Supplying carbon and graphite products for nuclear and energy infrastructure.
- Maintaining compliance with federal procurement and manufacturing standards.
Business Types for NAICS 335991
- Specialty carbon and graphite product manufacturers
- Advanced materials and composites producers
- Industrial suppliers serving aerospace and defense sectors
- Research and development firms specializing in carbon technologies
- Small and medium-sized enterprises with ISO and MIL-SPEC certifications
- Contract manufacturers for government and energy industries
Subcategories for NAICS 335991
- Brush blocks, carbon or molded graphite, manufacturing
- Brushes and brush stock contacts, electric, carbon and graphite, manufacturing
- Brushplates, carbon or graphite, manufacturing
- Carbon electrodes and contacts, electric, manufacturing
- Carbon specialties for aerospace use (except gaskets) manufacturing
- Carbon specialties for electrical use manufacturing
- Carbon specialties for mechanical use (except gaskets) manufacturing
- Carbons, electric, manufacturing
- Carbons, lighting, manufacturing
- Contacts, electrical, carbon and graphite, manufacturing
- Electrodes for thermal and electrolytic uses, carbon and graphite, manufacturing
- Fibers, carbon and graphite, manufacturing
- Graphite electrodes and contacts, electric, manufacturing
- Graphite specialties for aerospace use (except gaskets) manufacturing
- Graphite specialties for electrical use manufacturing
- Graphite specialties for mechanical use (except gaskets) manufacturing
- Heat shields, carbon or graphite, manufacturing
- Lighting carbons manufacturing
- Metal-graphite products manufacturing
Government Buyers for NAICS 335991
Government agencies such as the Department of Defense (DoD), Department of Energy (DOE), National Aeronautics and Space Administration (NASA), and the Department of Veterans Affairs (VA) commonly procure products under NAICS 335991. These agencies require carbon and graphite components for critical applications including military hardware, nuclear reactors, aerospace components, and medical devices. The unique material properties of carbon and graphite products—such as thermal stability, electrical conductivity, and chemical resistance—are essential for mission-critical equipment and infrastructure. Procurement by these agencies ensures the availability of high-quality, specialized materials needed to maintain operational readiness, advance scientific research, and support national security objectives.
Contract Types & Procurement for NAICS 335991
Contracts in this NAICS category typically include fixed-price, cost-reimbursement, and indefinite delivery/indefinite quantity (IDIQ) agreements, often awarded through competitive bidding or negotiated procurement methods. Government contracting officers may issue solicitations for both production and research and development efforts involving carbon and graphite products. Contract values vary widely depending on the complexity and scale of the requirement, ranging from small supply contracts to multimillion-dollar agreements for customized or high-volume manufacturing. Long-term contracts and blanket purchase agreements are also common to maintain steady supply chains for ongoing government projects. Compliance with quality standards such as ISO and MIL-SPEC is frequently mandated in these contracts.
Details for NAICS 335991
Explore the hierarchy and related codes for this industry
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