What is NAICS code 811310?

NAICS 811310 is the industry "Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance" in the North American Industry Classification System, part of the Other Services (except Public Administration) sector (81).

What is the size standard for NAICS 811310?

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 811310 in the SBA table of size standards on sba.gov; it changes from time to time.

NAICS Code 811310: Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance

NAICS code 811310 is the industry for commercial and industrial machinery and equipment (except automotive and electronic) repair and maintenance in the Other Services (except Public Administration) 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 811310

Federal agencies obligated $2.2B on contracts under NAICS 811310 from FY2024 to FY2026, including $619M in FY2026. The biggest buyers were the Department of Defense, the Department of Veterans Affairs, the Department of Homeland Security. The largest contractors were KBR Services, LLC, Vital Link, Inc., General Electric Company.

See the full breakdown: government commercial and industrial machinery and equipment (except automotive and electronic) repair and maintenance contracts, who wins and who buys.

Open government bids for NAICS 811310

The newest open notices from SAM.gov. Bidding needs a free SAM.gov registration.

EURO-DIESEL DRUPS (DIESEL ROTARY UNINTERRUPTIBLE POWER SUPPLY)
Dept of Defense · Solicitation · NAICS 811310
Posted Oct 30, 2026 · Responses due Nov 30, 2026
Facility Weight Handling Equipment (WHE) Maintenance and Repair Services at Marine Corps Installation Pacific (MCI-PAC) Camp Smedley D. Butler Okinawa, Japan
Dept of Defense · Sources Sought · NAICS 811310
Posted Oct 30, 2026 · Responses due Nov 17, 2026
Annual Inspection Maintenance of Manlifts
Homeland Security, Department of · Combined Synopsis/Solicitation · NAICS 811310 · CT · Small Business Set Aside - Total
Posted Oct 30, 2026 · Responses due Nov 16, 2026
Elevator Repair and Maintenance Support Services
Dept of Defense · Solicitation · NAICS 811310 · AZ · Small Business Set Aside - Total
Posted Oct 30, 2026 · Responses due Nov 30, 2026
CRREL Generator Maintenance Services
Dept of Defense · Solicitation · NAICS 811310 · NH · Small Business Set Aside - Total
Posted Oct 30, 2026 · Responses due Nov 12, 2026

See all 13 open bids under NAICS 811310

Small business size standard for NAICS 811310

To bid on small business set-aside contracts under NAICS 811310, 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.

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 811310?: NAICS 811310 is the industry "Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance" in the North American Industry Classification System, part of the Other Services (except Public Administration) sector (81).
What is the size standard for NAICS 811310?: 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 811310 in the SBA table of size standards on sba.gov; it changes from time to time.
Are there government contracts for NAICS 811310?: Yes. Federal agencies obligated $2.2B on contracts under NAICS 811310 from FY2024 to FY2026, and 13 notices are open right now.