NAICS Code 541690: Other Scientific and Technical Consulting Services
NAICS code 541690 is the industry for other scientific and technical consulting services in the Professional, Scientific, and Technical Services sector. Agencies tag every federal contract with a NAICS code, so this is the code to list in your SAM.gov registration and to search for bids.
Government contracts under NAICS 541690
Federal agencies obligated $6.4B on contracts under NAICS 541690 from FY2024 to FY2026, including $1.9B in FY2026. The biggest buyers were the Department of Defense, the Department of Health and Human Services, the Agency for International Development. The largest contractors were Domestic Awardees (Undisclosed), Kelly Services, Inc., General Dynamics One Source LLC.
See the full breakdown: government other scientific and technical consulting services contracts, who wins and who buys.
Open government bids for NAICS 541690
The newest open notices from SAM.gov. Bidding needs a free SAM.gov registration.
- Senior Advisor Subject Matter Expert (SME) with Pharmaceutical Development and Pain Expertise for the NINDSClosing soon
Health and Human Services, Department of · Combined Synopsis/Solicitation · NAICS 541690 · MD · Small Business Set Aside - Total
Posted Oct 30, 2026 · Responses due Nov 2, 2026
- Respirator Fit TestingClosing soon
Veterans Affairs, Department of · Combined Synopsis/Solicitation · NAICS 541690 · WV · No Set aside used
Posted Oct 30, 2026 · Responses due Nov 5, 2026
Health and Human Services, Department of · Combined Synopsis/Solicitation · NAICS 541690 · MD
Posted Oct 29, 2026 · Responses due Nov 5, 2026
- Senior Advisor Subject Matter Expert (SME) with Pharmaceutical Development and Pain Expertise for the NINDSClosing soon
Health and Human Services, Department of · Combined Synopsis/Solicitation · NAICS 541690 · MD · Small Business Set Aside - Total
Posted Oct 29, 2026 · Responses due Nov 2, 2026
Small business size standard for NAICS 541690
To bid on small business set-aside contracts under NAICS 541690, your business must be small under the SBA size standard for this code, measured either by average annual receipts or by number of employees. The values are updated periodically, so check the current SBA table of size standards before you bid.
Other NAICS codes in 5416
- NAICS 541611: Administrative Management and General Management Consulting Services
- NAICS 541612: Human Resources Consulting Services
- NAICS 541613: Marketing Consulting Services
- NAICS 541614: Process, Physical Distribution, and Logistics Consulting Services
- NAICS 541618: Other Management Consulting Services
- NAICS 541620: Environmental Consulting Services
How to choose the right NAICS code
Pick the 6-digit code that best describes what you sell. List it as your primary code in SAM.gov, and add other codes for related work. Agencies choose one NAICS code for each contract, so check the codes on past awards for the kind of work you do. Search all codes in the NAICS code lookup.
Related guides
Frequently asked questions
- What is NAICS code 541690?
- NAICS 541690 is the industry "Other Scientific and Technical Consulting Services" in the North American Industry Classification System, part of the Professional, Scientific, and Technical Services sector (54).
- What is the size standard for NAICS 541690?
- The SBA sets a small business size standard for each NAICS code, either average annual receipts or number of employees. Check the current value for 541690 in the SBA table of size standards on sba.gov; it changes from time to time.
- Are there government contracts for NAICS 541690?
- Yes. Federal agencies obligated $6.4B on contracts under NAICS 541690 from FY2024 to FY2026, and 4 notices are open right now.