NAICS Code 811310: Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
National industry
SBA small business size standard: $12.5 million in average annual receipts
Definition
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).
Code facts
- Part of
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81
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811
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8113
- 81131
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8113
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811
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81
- Contract awards
- 2,566 In the last 12 months
- Contract obligations
- $769,611,624 In FY2025
NAICS codes and definitions come from the U.S. Census Bureau, size standards from the SBA and contract spending from SAM.gov/FPDS.
Business activities under NAICS 811310
- Agricultural machinery and equipment repair and maintenance services
- Armature rewinding services (except on an assembly line or factory basis)
- Blade sharpening, commercial and industrial machinery and equipment
- Coil rewinding (except on an assembly line or factory basis)
- Commercial and industrial machinery repair and maintenance services
- Commercial refrigeration equipment repair and maintenance services
- Construction machinery and equipment repair and maintenance services
- Electric motor repair and maintenance services, commercial or industrial
- Electrical generating and transmission equipment repair and maintenance services
- Engine repair (except automotive, small engine)
- Farm machinery and equipment repair and maintenance services
- Food machinery repair and maintenance services
- Forestry machinery and equipment repair and maintenance services
- Forklift repair and maintenance services
- Foundry machinery and equipment repair and maintenance services
- Freezer, commercial, repair and maintenance services
- Heavy machinery and equipment repair and maintenance services
- Hydraulic equipment repair and maintenance services
- Industrial equipment and machinery repair and maintenance services
- Industrial truck (e.g., forklifts) repair and maintenance services
- Machine tools repair and maintenance services
- Materials handling equipment repair and maintenance services
- Mechanical power transmission equipment repair and maintenance services
- Mining machinery and equipment repair and maintenance services
- Motor repair and maintenance services, commercial or industrial
- Paper making machinery repair and maintenance services
- Printing trade machinery repair and maintenance services
- Reconditioning shipping barrels and drums
- Refrigeration equipment repair and maintenance services, industrial and commercial-type
- Rewinding armatures (except on an assembly line or factory basis)
- Service machinery and equipment repair and maintenance services
- Textile machinery repair and maintenance services
- Tractor, farm or construction equipment repair and maintenance services
- Truck refrigeration repair and maintenance services
- Welding repair services (e.g., automotive, general)
Show all 35
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Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $3,636,519 |
| FY2026 | $636,499,673 |
| FY2025 | $769,611,624 |
| FY2024 | $772,712,353 |
| FY2023 | $738,871,541 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | KBR Services, LLC | $61,534,916 | |
| 2 | Vital Link, Inc. | $34,015,952 | |
| 3 | General Electric Company | $26,141,242 | |
| 4 | Sandhills Utility Services, LLC | $17,151,595 | |
| 5 | General Dynamics Mission Systems, Inc. | $16,655,380 | |
| 6 | Cherokee Nation Armored Solutions, LLC | $13,994,509 | |
| 7 | MTU Maintenance Berlin- Brandenburg GMBH | $11,414,820 | |
| 8 | Phillips Corporation | $11,259,416 | |
| 9 | PC Mechanical, Inc. | $9,948,869 | |
| 10 | Northrop Grumman Systems Corporation | $9,894,043 |
See the full FY2025 ranking of NAICS 811310 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of the Navy | $225,481,364 | |
| 2 | Department of the Army | $135,315,515 | |
| 3 | Department of Veterans Affairs | $70,496,714 | |
| 4 | Air Force | $68,631,325 | |
| 5 | US Special Operations Command | $29,840,702 | |
| 6 | Department of Homeland Security | $23,635,362 | |
| 7 | Department of the Interior | $16,848,192 | |
| 8 | Department of the Treasury | $12,455,245 | |
| 9 | Defense Commissary Agency | $10,520,857 | |
| 10 | Defense Logistics Agency | $7,549,168 |
Top PSC codes by obligations
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Texas | $79,242,168 | |
| 2 | Florida | $76,494,995 | |
| 3 | California | $45,234,198 | |
| 4 | Massachusetts | $44,097,001 | |
| 5 | Virginia | $36,753,562 | |
| 6 | North Carolina | $29,997,645 | |
| 7 | Utah | $22,223,229 | |
| 8 | Maryland | $19,863,767 | |
| 9 | Arizona | $12,218,053 | |
| 10 | New York | $11,509,563 | |
| 11 | Kentucky | $11,304,071 | |
| 12 | New Jersey | $10,626,665 | |
| 13 | Colorado | $9,713,874 | |
| 14 | Michigan | $8,362,681 | |
| 15 | Pennsylvania | $8,171,332 | |
| 16 | South Carolina | $7,114,001 | |
| 17 | Oklahoma | $6,334,576 | |
| 18 | Georgia | $6,203,240 | |
| 19 | Nevada | $6,146,283 | |
| 20 | Indiana | $5,823,395 | |
| 21 | Alabama | $5,738,568 | |
| 22 | Illinois | $5,491,054 | |
| 23 | Hawaii | $5,268,368 | |
| 24 | Ohio | $3,909,227 | |
| 25 | District of Columbia | $3,887,899 | |
| 26 | Rhode Island | $3,180,373 | |
| 27 | Wisconsin | $2,847,017 | |
| 28 | Tennessee | $2,651,750 | |
| 29 | Guam | $2,591,821 | |
| 30 | Oregon | $2,571,374 | |
| 31 | Washington | $2,525,908 | |
| 32 | Louisiana | $2,452,693 | |
| 33 | Mississippi | $2,307,149 | |
| 34 | Arkansas | $2,293,432 | |
| 35 | Connecticut | $2,047,464 | |
| 36 | Alaska | $2,023,409 | |
| 37 | Minnesota | $1,773,914 | |
| 38 | Puerto Rico | $1,717,630 | |
| 39 | Missouri | $1,625,883 | |
| 40 | Maine | $1,450,552 | |
| 41 | New Mexico | $1,271,998 | |
| 42 | Kansas | $1,244,985 | |
| 43 | Wyoming | $996,692 | |
| 44 | West Virginia | $932,372 | |
| 45 | Delaware | $921,047 | |
| 46 | North Dakota | $915,708 | |
| 47 | New Hampshire | $634,624 | |
| 48 | South Dakota | $542,101 | |
| 49 | Iowa | $497,092 | |
| 50 | Idaho | $451,083 | |
| 51 | Nebraska | $401,828 | |
| 52 | Montana | $314,943 | |
| 53 | Vermont | $268,462 | |
| 54 | U.S. Virgin Islands | $54,562 | |
| 55 | Northern Mariana Islands | $27,000 | |
| 56 | American Samoa | $23,842 |
Show all 56
Shares are of everything obligated under NAICS 811310 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 39 more
Latest 49 of 33,220 listed here. See the rest on GovTribe.
Size standard history
Federal Register rules that named this code
Proposed size standard changes
| Proposed rule | Published | Comments |
|---|---|---|
| Small Business Size Standards: Monetary-Based Industry Size Standards | Closed Oct 21, 2025No final rule found |
From the NAICS codes each rule's amendments to 13 CFR 121.201 name. Rules that print their size standard tables as images aren't listed.
Quick answers
What is NAICS 811310?
NAICS 811310 is Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance, a national industry in NAICS 81, Other Services (except Public Administration).
What is the NAICS code for forklift repair and maintenance services?
The NAICS code for forklift repair and maintenance services is 811310, Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance.
What is the NAICS code for reconditioning shipping barrels and drums?
The NAICS code for reconditioning shipping barrels and drums is 811310, Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance.
What is the NAICS code for machine tools repair and maintenance services?
The NAICS code for machine tools repair and maintenance services is 811310, Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance.
When did the size standard for NAICS 811310 last change?
The most recent Federal Register rule on record that names NAICS 811310 in the SBA's size standards is "Small Business Size Standards: Adjustment of Monetary-Based Size Standards, Disadvantage Thresholds, and 8(a) Eligibility Thresholds for Inflation" (87 FR 69118), published Nov 17, 2022 and effective Dec 19, 2022.
How much do federal agencies spend under NAICS 811310?
Federal contracts under NAICS 811310 obligated $769,611,624 in fiscal year 2025 and $2,921,331,710 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 811310?
The contractors with the most obligated under NAICS 811310 in fiscal years 2026 and 2027 are KBR Services, LLC ($61,534,916); Vital Link, Inc. ($34,015,952); and General Electric Company ($26,141,242).
Which agencies buy the most under NAICS 811310?
The agencies that obligated the most under NAICS 811310 in fiscal years 2026 and 2027 are Department of the Navy ($225,481,364), Department of the Army ($135,315,515) and Department of Veterans Affairs ($70,496,714).
Which PSC codes are used with NAICS 811310?
The PSC codes with the most obligated under NAICS 811310 in fiscal years 2026 and 2027 are R706 Logistics Support Services; J036 Maintenance, Repair and Rebuilding of Equipment: Special Industry Machinery; and J039 Maintenance, Repair and Rebuilding of Equipment: Materials Handling Equipment.
Where is the work under NAICS 811310 performed?
By place of performance, the states with the most contract obligations under NAICS 811310 over the last 12 months are Texas ($79,242,168), Florida ($76,494,995) and California ($45,234,198).
What is the latest contract opportunity under NAICS 811310?
The latest contract opportunity under NAICS 811310 is Fire Suppression System Installation and Obsolete Fire Bottle Replacement, solicitation from Naval Supply Systems Command (Navy), posted November 6, 2026.
On GovTribe
See everything under NAICS 811310
- Federal contract opportunities, awards and IDVs under this code
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