Reference
What the NAICS codes mean
Every federal contract notice carries a NAICS code, and the SAM.gov extract publishes the number without the name. This is the name — the North American Industry Classification System title for each code the federal market is currently buying under, grouped by sector.
The code also decides whether you count as a small business: SBA sets a size standard per code, so the same company can be small for one line of work and not for another. See the FAQ for how that works.
The whole market, every agency buying, or where the work is.
153 codes across 14 sectors have enough open work to have a page of their own. Everything else in the taxonomy is omitted rather than listed empty.
31-33 · Manufacturing
11,242 open notices across 88 codes.
- 336413 — Other Aircraft Parts and Auxiliary Equipment Manufacturing · 1,138 open
- 332510 — Hardware Manufacturing · 477 open
- 336412 — Aircraft Engine and Engine Parts Manufacturing · 422 open
- 332722 — Bolt, Nut, Screw, Rivet, and Washer Manufacturing · 396 open
- 332911 — Industrial Valve Manufacturing · 366 open
- 336611 — Ship Building and Repairing · 322 open
- 334417 — Electronic Connector Manufacturing · 293 open
- 333998 — All Other Miscellaneous General Purpose Machinery Manufacturing · 288 open
- 325412 — Pharmaceutical Preparation Manufacturing · 267 open
- 334419 — Other Electronic Component Manufacturing · 260 open
- 334511 — Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing · 255 open
- 332919 — Other Metal Valve and Pipe Fitting Manufacturing · 222 open
- 339991 — Gasket, Packing, and Sealing Device Manufacturing · 202 open
- 335931 — Current-Carrying Wiring Device Manufacturing · 202 open
- 334412 — Bare Printed Circuit Board Manufacturing · 200 open
- 334516 — Analytical Laboratory Instrument Manufacturing · 200 open
- 334220 — Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing · 200 open
- 335312 — Motor and Generator Manufacturing · 194 open
- 333310 — Commercial and Service Industry Machinery Manufacturing · 188 open
- 334519 — Other Measuring and Controlling Device Manufacturing · 183 open
- 335999 — All Other Miscellaneous Electrical Equipment and Component Manufacturing · 154 open
- 333613 — Mechanical Power Transmission Equipment Manufacturing · 151 open
- 334290 — Other Communications Equipment Manufacturing · 146 open
- 333996 — Fluid Power Pump and Motor Manufacturing · 144 open
- 332991 — Ball and Roller Bearing Manufacturing · 144 open
- 336390 — Other Motor Vehicle Parts Manufacturing · 143 open
- 332994 — Small Arms, Ordnance, and Ordnance Accessories Manufacturing · 142 open
- 335314 — Relay and Industrial Control Manufacturing · 131 open
- 333618 — Other Engine Equipment Manufacturing · 127 open
- 339112 — Surgical and Medical Instrument Manufacturing · 126 open
- 334416 — Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing · 125 open
- 335311 — Power, Distribution, and Specialty Transformer Manufacturing · 123 open
- 339113 — Surgical Appliance and Supplies Manufacturing · 121 open
- 332999 — All Other Miscellaneous Fabricated Metal Product Manufacturing · 117 open
- 334310 — Audio and Video Equipment Manufacturing · 117 open
- 311991 — Perishable Prepared Food Manufacturing · 111 open
- 336411 — Aircraft Manufacturing · 109 open
- 335313 — Switchgear and Switchboard Apparatus Manufacturing · 107 open
- 333912 — Air and Gas Compressor Manufacturing · 106 open
- 334413 — Semiconductor and Related Device Manufacturing · 97 open
- 334513 — Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables · 95 open
- 333415 — Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing · 89 open
- 332996 — Fabricated Pipe and Pipe Fitting Manufacturing · 88 open
- 325920 — Explosives Manufacturing · 84 open
- 333914 — Measuring, Dispensing, and Other Pumping Equipment Manufacturing · 82 open
- 334515 — Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals · 80 open
- 311999 — All Other Miscellaneous Food Manufacturing · 79 open
- 333413 — Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing · 79 open
- 336310 — Motor Vehicle Gasoline Engine and Engine Parts Manufacturing · 69 open
- 336320 — Motor Vehicle Electrical and Electronic Equipment Manufacturing · 67 open
- 334418 — Printed Circuit Assembly (Electronic Assembly) Manufacturing · 65 open
- 332216 — Saw Blade and Handtool Manufacturing · 62 open
- 333612 — Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing · 62 open
- 326220 — Rubber and Plastics Hoses and Belting Manufacturing · 60 open
- 334514 — Totalizing Fluid Meter and Counting Device Manufacturing · 58 open
- 333923 — Overhead Traveling Crane, Hoist, and Monorail System Manufacturing · 57 open
- 332912 — Fluid Power Valve and Hose Fitting Manufacturing · 57 open
- 339999 — All Other Miscellaneous Manufacturing · 52 open
- 332439 — Other Metal Container Manufacturing · 51 open
- 333120 — Construction Machinery Manufacturing · 50 open
- 334510 — Electromedical and Electrotherapeutic Apparatus Manufacturing · 49 open
- 333924 — Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing · 48 open
- 333517 — Machine Tool Manufacturing · 46 open
- 332710 — Machine Shops · 46 open
- 334111 — Electronic Computer Manufacturing · 45 open
- 335910 — Battery Manufacturing · 45 open
- 336350 — Motor Vehicle Transmission and Power Train Parts Manufacturing · 43 open
- 333318 — Commercial and Service Industry Machinery Manufacturing · 43 open
- 336612 — Boat Building · 43 open
- 325120 — Industrial Gas Manufacturing · 42 open
- 332618 — Other Fabricated Wire Product Manufacturing · 41 open
- 336211 — Motor Vehicle Body Manufacturing · 40 open
- 336992 — Military Armored Vehicle, Tank, and Tank Component Manufacturing · 40 open
- 332112 — Nonferrous Forging · 39 open
- 332993 — Ammunition (except Small Arms) Manufacturing · 38 open
- 336999 — All Other Transportation Equipment Manufacturing · 37 open
- 325998 — All Other Miscellaneous Chemical Product and Preparation Manufacturing · 34 open
- 334614 — Manufacturing and Reproducing Magnetic and Optical Media · 32 open
- 336110 — Automobile and Light Duty Motor Vehicle Manufacturing · 32 open
- 332312 — Fabricated Structural Metal Manufacturing · 31 open
- 334512 — Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use · 30 open
- 314999 — All Other Miscellaneous Textile Product Mills · 30 open
- 337214 — Office Furniture (except Wood) Manufacturing · 30 open
- 333611 — Turbine and Turbine Generator Set Units Manufacturing · 29 open
- 336360 — Motor Vehicle Seating and Interior Trim Manufacturing · 28 open
- 333999 — All Other General Purpose Machinery Manufacturing · 27 open
- 332311 — Prefabricated Metal Building and Component Manufacturing · 27 open
- 333241 — Food Product Machinery Manufacturing · 25 open
54 · Professional, Scientific, and Technical Services
2,931 open notices across 17 codes.
- 541715 — Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) · 1,211 open
- 541330 — Engineering Services · 486 open
- 541990 — All Other Professional, Scientific, and Technical Services · 229 open
- 541519 — Other Computer Related Services · 206 open
- 541714 — Research and Development in Biotechnology (except Nanobiotechnology) · 114 open
- 541512 — Computer Systems Design Services · 101 open
- 541611 — Administrative Management and General Management Consulting Services · 83 open
- 541511 — Custom Computer Programming Services · 80 open
- 54171 — Research and Development in the Physical, Engineering, and Life Sciences · 73 open
- 541620 — Environmental Consulting Services · 61 open
- 541380 — Testing Laboratories and Services · 61 open
- 541720 — Research and Development in the Social Sciences and Humanities · 47 open
- 541690 — Other Scientific and Technical Consulting Services · 41 open
- 541310 — Architectural Services · 40 open
- 541370 — Surveying and Mapping (except Geophysical) Services · 34 open
- 541614 — Process, Physical Distribution, and Logistics Consulting Services · 33 open
- 541 — Professional, Scientific, and Technical Services · 31 open
23 · Construction
2,607 open notices across 15 codes.
- 236220 — Commercial and Institutional Building Construction · 926 open
- 237990 — Other Heavy and Civil Engineering Construction · 415 open
- 238220 — Plumbing, Heating, and Air-Conditioning Contractors · 268 open
- 237310 — Highway, Street, and Bridge Construction · 206 open
- 238290 — Other Building Equipment Contractors · 149 open
- 238210 — Electrical Contractors and Other Wiring Installation Contractors · 138 open
- 238990 — All Other Specialty Trade Contractors · 123 open
- 237110 — Water and Sewer Line and Related Structures Construction · 110 open
- 238160 — Roofing Contractors · 63 open
- 237130 — Power and Communication Line and Related Structures Construction · 39 open
- 238330 — Flooring Contractors · 39 open
- 238910 — Site Preparation Contractors · 38 open
- 236118 — Residential Remodelers · 34 open
- 238320 — Painting and Wall Covering Contractors · 33 open
- 237120 — Oil and Gas Pipeline and Related Structures Construction · 26 open
56 · Administrative and Support and Waste Management and Remediation Services
987 open notices across 12 codes.
- 561210 — Facilities Support Services · 215 open
- 561730 — Landscaping Services · 151 open
- 561720 — Janitorial Services · 130 open
- 562910 — Remediation Services · 113 open
- 561621 — Security Systems Services (except Locksmiths) · 110 open
- 562111 — Solid Waste Collection · 49 open
- 562991 — Septic Tank and Related Services · 46 open
- 561990 — All Other Support Services · 43 open
- 562211 — Hazardous Waste Treatment and Disposal · 38 open
- 561790 — Other Services to Buildings and Dwellings · 35 open
- 561612 — Security Guards and Patrol Services · 30 open
- 561320 — Temporary Help Services · 27 open
81 · Other Services (except Public Administration)
341 open notices across 2 codes.
51 · Information
241 open notices across 4 codes.
53 · Real Estate and Rental and Leasing
222 open notices across 2 codes.
62 · Health Care and Social Assistance
107 open notices across 3 codes.
11 · Agriculture, Forestry, Fishing and Hunting
106 open notices across 1 codes.
- 115310 — Support Activities for Forestry · 106 open
48 · Transportation and Warehousing
100 open notices across 2 codes.
61 · Educational Services
94 open notices across 3 codes.
92 · Public Administration
64 open notices across 2 codes.
72 · Accommodation and Food Services
49 open notices across 1 codes.
- 721110 — Hotels (except Casino Hotels) and Motels · 49 open
22 · Utilities
32 open notices across 1 codes.
- 221310 — Water Supply and Irrigation Systems · 32 open