Open federal bids by NAICS code
The 40 NAICS (North American Industry Classification System) codes with the most open SAM.gov (System for Award Management, the government's contracting website) solicitations, sources-sought and presolicitation notices in SAM.gov data through Oct 21, 2026, plus the codes we write industry reports for.
Industry reports
Our analysis of open notices, by set-aside, agency, state and deadline: NAICS 236220 (building construction) · NAICS 541330 (engineering services) · NAICS 238220 (HVAC and plumbing) · NAICS 561730 (landscaping and grounds) · NAICS 561210 (facilities support) · NAICS 561720 (janitorial)
| Code | Industry | Open solicitations |
|---|---|---|
| NAICS 336413 | Other Aircraft Parts and Auxiliary Equipment Manufacturing | 568 |
| NAICS 333998 | All Other Miscellaneous General Purpose Machinery Manufacturing | 237 |
| NAICS 334417 | Electronic Connector Manufacturing | 210 |
| NAICS 334419 | Other Electronic Component Manufacturing | 208 |
| NAICS 332911 | Industrial Valve Manufacturing | 201 |
| NAICS 332919 | Other Metal Valve and Pipe Fitting Manufacturing | 185 |
| NAICS 236220 | Commercial and Institutional Building Construction | 179 |
| NAICS 332510 | Hardware Manufacturing | 177 |
| NAICS 334412 | Bare Printed Circuit Board Manufacturing | 156 |
| NAICS 541715 | Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | 155 |
| NAICS 339991 | Gasket, Packing, and Sealing Device Manufacturing | 148 |
| NAICS 237990 | Other Heavy and Civil Engineering Construction | 147 |
| NAICS 332722 | Bolt, Nut, Screw, Rivet, and Washer Manufacturing | 134 |
| NAICS 334511 | Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing | 133 |
| NAICS 336412 | Aircraft Engine and Engine Parts Manufacturing | 126 |
| NAICS 333613 | Mechanical Power Transmission Equipment Manufacturing | 116 |
| NAICS 335931 | Current-Carrying Wiring Device Manufacturing | 114 |
| NAICS 335312 | Motor and Generator Manufacturing | 111 |
| NAICS 334220 | Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing | 109 |
| NAICS 541330 | Engineering Services | 100 |
| NAICS 335314 | Relay and Industrial Control Manufacturing | 96 |
| NAICS 335313 | Switchgear and Switchboard Apparatus Manufacturing | 95 |
| NAICS 335311 | Power, Distribution, and Specialty Transformer Manufacturing | 93 |
| NAICS 335999 | All Other Miscellaneous Electrical Equipment and Component Manufacturing | 92 |
| NAICS 336611 | Ship Building and Repairing | 91 |
| NAICS 333618 | Other Engine Equipment Manufacturing | 86 |
| NAICS 333310 | Commercial and Service Industry Machinery Manufacturing | 83 |
| NAICS 333996 | Fluid Power Pump and Motor Manufacturing | 82 |
| NAICS 332991 | Ball and Roller Bearing Manufacturing | 81 |
| NAICS 334416 | Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing | 79 |
| NAICS 332999 | All Other Miscellaneous Fabricated Metal Product Manufacturing | 78 |
| NAICS 332994 | Small Arms, Ordnance, and Ordnance Accessories Manufacturing | 76 |
| NAICS 336390 | Other Motor Vehicle Parts Manufacturing | 76 |
| NAICS 333912 | Air and Gas Compressor Manufacturing | 75 |
| NAICS 333914 | Measuring, Dispensing, and Other Pumping Equipment Manufacturing | 73 |
| NAICS 531120 | Lessors of Nonresidential Buildings (except Miniwarehouses) | 72 |
| NAICS 334290 | Other Communications Equipment Manufacturing | 64 |
| NAICS 334413 | Semiconductor and Related Device Manufacturing | 61 |
| NAICS 334519 | Other Measuring and Controlling Device Manufacturing | 59 |
| NAICS 336411 | Aircraft Manufacturing | 58 |
| NAICS 238220 | Plumbing, Heating, and Air-Conditioning Contractors | 45 |
| NAICS 561730 | Landscaping Services | 20 |
| NAICS 561210 | Facilities Support Services | 34 |
| NAICS 561720 | Janitorial Services | 19 |