NAICS 811310: Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
This industry comprises establishments primarily engaged in the repair and maintenance of commercial and industrial machinery and equipment. Establishments in this industry either sharpen/install commercial and industrial machinery blades and saws or provide welding (e.g., automotive, general) repair services; or repair agricultural and other heavy and industrial machinery and equipment (e.g., forklifts and other material handling equipment, machine tools, commercial refrigeration equipment, construction equipment, and mining machinery). Cross-References. Establishments primarily engaged in--Show more
NAICS 811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance covers the inspection, servicing, calibration, overhaul, and repair of heavy-duty mechanical systems used in industrial, manufacturing, and institutional settings. This includes maintenance of conveyors, pumps, compressors, HVAC systems, material handling equipment, textile machinery, and other non-automotive, non-electronic industrial assets.
Industry Spending Overview
Federal obligations, top contractors and agencies, and related industry codes for NAICS 811310.
AI Industry Description
NAICS 811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance covers the inspection, servicing, calibration, overhaul, and repair of heavy-duty mechanical systems used in industrial, manufacturing, and institutional settings. This includes...
NAICS 811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance covers the inspection, servicing, calibration, overhaul, and repair of heavy-duty mechanical systems used in industrial, manufacturing, and institutional settings. This includes maintenance of conveyors, pumps, compressors, HVAC systems, material handling equipment, textile machinery, and other non-automotive, non-electronic industrial assets. Contractors in this sector provide preventive maintenance programs, component replacement, alignment and balancing, hydraulic and pneumatic system servicing, and on-site troubleshooting to ensure operational continuity. In government contracting, this NAICS supports mission-critical infrastructure across defense, healthcare, and public works facilities, where uptime and regulatory compliance are paramount. Services are often delivered under long-term service agreements or emergency response contracts, requiring certified technicians, OEM-specific training, and adherence to federal maintenance standards. Top contractors in this space include DAP Construction Management LLC, PHOENIX GENERAL CONTRACTORS, LLC, TECH O. R., LLC, and MONTISSOL ESSENTIALS L.L.C., alongside specialized firms like LINDE GAS & EQUIPMENT INC. and C & B MATERIAL HANDLING, LLC. The competitive landscape is dominated by small businesses and mid-tier firms with niche expertise in industrial mechanical systems, often leveraging small business set-asides and 8(a) designations to compete effectively against larger primes. Primary buyers include the Department of Defense, Department of Veterans Affairs, Department of Health and Human Services, and Department of the Interior. Demand is driven by facility sustainment programs, medical equipment maintenance in VA hospitals, and industrial support at military bases, research labs, and federal warehouses. Agencies prioritize contractors with proven experience in high-reliability environments and compliance with federal maintenance protocols. The market is characterized by high opportunity density in regions with dense federal infrastructure, including military installations and VA medical centers. Contractors with certified maintenance personnel, inventory management capabilities, and experience in federal procurement compliance have a strong competitive edge. Growing emphasis on lifecycle management and predictive maintenance is increasing demand for service providers with data-driven maintenance analytics capabilities.
Small Business Size Standard
The SBA threshold that decides who can bid NAICS 811310 work as a small business.
The SBA cap for this NAICS (13 CFR 121.201). A business at or under it can self-certify as small for work in this code, which is what makes it eligible for a small-business set-aside. The cap is set per NAICS, so the same company can be small in one code and not in another.
13 CFR 121.201, effective January 1, 2026. The SBA revises the table roughly once a year.
Top Contractors
Companies with the highest total award value under NAICS 811310, ranked by dollars won.
| Company | Total Awards | Contracts |
|---|---|---|
| L3HARRIS MARITIME SERVICES INC | $49.0M | 3 |
| VITAL LINK, INC. | $29.8M | 14 |
| HII MISSION TECHNOLOGIES CORP | $26.6M | 1 |
| GENERAL ELECTRIC COMPANY | $26.1M | 1 |
| SANDHILLS UTILITY SERVICES, LLC | $16.9M | 16 |
| KBR SERVICES, LLC | $14.1M | 2 |
| CHEROKEE NATION ARMORED SOLUTIONS, LLC | $11.3M | 7 |
| NORTHROP GRUMMAN SYSTEMS CORPORATION | $9.9M | 1 |
| TUSAS MOTOR SANAYII A.S. | $9.7M | 1 |
| S.T.S. - SERVIZI TECNOLOGIE E SVILUPPO S.R.L. | $9.4M | 10 |
Top Agencies
Federal agencies directing the most contract spending toward NAICS 811310.
Competition
How many companies historically bid on federal awards in NAICS 811310, from bidder counts reported on USAspending.
Half or more of reported awards drew exactly one bidder, usually a sign of incumbent-held work rather than an open field. · 96,768 reported awards
Median Bidders
1
Per reported award, all-time
Single-Bid Awards
59%
Share of reported awards with one bidder
10+ Bidder Awards
2%
Share of reported awards with 10+ bidders
Reported Awards
96,768
87% of 111,344 total awards
Share of reported awards in each bidder-count bracket per federal fiscal year.
How this code compares up the NAICS hierarchy. Parent cohorts pool every code under their prefix, so they are the steadier baseline when a 6-digit sample is thin.
| Industry Family | Competition | Median Bidders | Single-Bid | Bidder Mix | Reported Awards |
|---|---|---|---|---|---|
811310This Code Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance | Usually Single-Bid | 1 | 59% | 96,76887% of 111,344 | |
81131NAICS Industry | Usually Single-Bid | 1 | 59% | 96,76887% of 111,344 | |
8113Industry Group Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance | Usually Single-Bid | 1 | 59% | 96,76887% of 111,344 | |
811Subsector | Usually Single-Bid | 1 | 63% | 412,58489% of 463,549 | |
81Sector Other Services (except Public Administration) | Usually Single-Bid | 1 | 64% | 525,62788% of 594,385 |
Bidder counts reported on past federal awards in this NAICS (USAspending). An open opportunity has no bidders yet, so this is the historical norm for similar work, not a fact about this solicitation. Not all awards report bidder counts, and fewer bidders often means incumbent-held work rather than an easier win. Federal reporting of bidder counts fell from ~96% of awards (FY2016) to ~30% (FY2018 onward); the chart shows shares of reported awards, and washed-out stretches mark years with fewer than 30 of them.
Related NAICS Codes
Industries similar to Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance, by shared sector, subsector, and industry group.
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