Top 100 Contractors in NAICS 81121: Electronic and Precision Equipment Repair and Maintenance, Aug 2025–Jul 2026
Parent companies by net contract obligations Aug 1, 2025 – Jul 31, 2026 Code page on GovTribe
The latest 12 months. See the newest fiscal year's list: Top Contractors in NAICS 81121: Electronic and Precision Equipment Repair and Maintenance, FY2025.
The top 10 won 55% of NAICS 81121 contract dollars from August 2025 through July 2026
Ranking facts
- Contract obligations
- $3,074,253,523 Net of deobligations, by contracts coded NAICS 81121 or a code under it
- Contractors
- 1,985 Parent companies with an obligation
- Largest contractor
- RTX Corporation $315 million, 9.7% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 | $314,776,459 | |||
| 2 | $309,829,739 | |||
| 3 | $216,975,751 | |||
| 4 |
Techflow, Inc.
Top agencies
|
$200,300,156 | ||
| 5 | $197,392,305 | |||
| 6 | $174,512,931 | |||
| 7 | $134,787,335 | |||
| 8 |
Agiliti Health Inc
|
$96,491,724 | ||
| 9 | $93,601,557 | |||
| 10 |
V2X, Inc.
|
$62,111,430 | ||
| 11 | $58,782,034 | |||
| 12 |
Rapiscan Systems Inc.
|
$56,196,300 | ||
| 13 | $47,925,418 | |||
| 14 | $46,608,869 | |||
| 15 |
Siemens Corporation
|
$36,117,966 | ||
| 16 |
Peraton Inc.
Top agencies
|
$31,950,956 | ||
| 17 |
Calista Corp
Top agencies
|
$27,310,133 | ||
| 18 | $26,858,125 | |||
| 19 | $26,341,699 | |||
| 20 |
BAE Systems
|
$24,935,491 | ||
| 21 |
JC Technology Inc.
|
$23,711,260 | ||
| 22 | $21,440,712 | |||
| 23 | $20,572,843 | |||
| 24 |
Thermo Fisher Scientific Inc.
|
$19,285,352 | ||
| 25 | $19,070,041 | |||
| 26 | $19,048,660 | |||
| 27 | $17,850,846 | |||
| 28 |
Danaher Corporation
|
$17,699,973 | ||
| 29 | $17,227,584 | |||
| 30 | $16,964,597 | |||
| 31 | $15,049,079 | |||
| 32 |
Cubic Defense Applications, Inc.
Top agencies
|
$13,906,471 | ||
| 33 | $13,691,405 | |||
| 34 | $13,414,058 | |||
| 35 | $13,176,961 | |||
| 36 |
Guidehouse Inc.
|
$13,144,555 | ||
| 37 |
Caes Systems LLC
Top agencies
|
$12,554,472 | ||
| 38 | $12,042,600 | |||
| 39 | $10,743,026 | |||
| 40 |
Interfuze Corporation
Top agencies
|
$9,868,925 | ||
| 41 |
Sonova USA Inc.
Top agencies
|
$9,748,356 | ||
| 42 | $8,943,106 | |||
| 43 | $8,643,558 | |||
| 44 | $8,632,146 | |||
| 45 |
Elbit Systems of America LLC
|
$8,431,706 | ||
| 46 | $8,425,164 | |||
| 47 | $8,116,798 | |||
| 48 | $7,606,955 | |||
| 49 | $7,507,066 | |||
| 50 | $7,047,232 | |||
| 51 |
Murtech, Inc.
Top agencies
|
$6,935,398 | ||
| 52 | $6,780,236 | |||
| 53 | $6,362,456 | |||
| 54 | $6,360,146 | |||
| 55 |
The Bionetics Corporation
|
$6,356,333 | ||
| 56 | $6,184,981 | |||
| 57 | $5,283,010 | |||
| 58 | $5,216,475 | |||
| 59 |
Radome Services LLC
Top agencies
|
$4,764,413 | ||
| 60 |
AGFA-GEVAERT
|
$4,557,426 | ||
| 61 |
Frontier Strategies LLC
Top agencies
|
$4,499,459 | ||
| 62 |
Fortive Corporation
|
$4,462,520 | ||
| 63 |
Idemia Identity & Security USA LLC
|
$4,458,481 | ||
| 64 | $4,402,250 | |||
| 65 |
Karl Storz Endoscopy-America Inc.
|
$4,363,545 | ||
| 66 |
Allegiance Supply Inc.
Top agencies
|
$4,331,369 | ||
| 67 |
Chugach Alaska Corporation
Top agencies
|
$4,320,050 | ||
| 68 | $4,273,532 | |||
| 69 |
Stryker Sales LLC
|
$4,228,304 | ||
| 70 | $4,156,950 | |||
| 71 | $4,141,390 | |||
| 72 |
Rolls-Royce Corporation
Top agencies
|
$4,051,008 | ||
| 73 |
Caylor Equipment Services LLC
Top agencies
|
$3,975,417 | ||
| 74 | $3,902,045 | |||
| 75 |
Clear Align LLC
Top agencies
|
$3,809,859 | ||
| 76 | $3,788,504 | |||
| 77 | $3,719,856 | |||
| 78 |
Kbr, Inc.
Top agencies
|
$3,624,046 | ||
| 79 | $3,553,929 | |||
| 80 |
Proaim Americas LLC.
|
$3,553,162 | ||
| 81 | $3,525,939 | |||
| 82 | $3,492,212 | |||
| 83 |
Medtronic Inc.
|
$3,421,739 | ||
| 84 |
Curtiss-Wright Corporation
Top agencies
|
$3,390,006 | ||
| 85 | $3,331,970 | |||
| 86 |
Excentium, Inc.
Top agencies
|
$3,290,716 | ||
| 87 | $3,268,184 | |||
| 88 | $3,198,386 | |||
| 89 | $3,181,420 | |||
| 90 | $3,180,542 | |||
| 91 | $3,085,758 | |||
| 92 |
Mitomo Co., Ltd.
Top agencies
|
$3,001,262 | ||
| 93 | $2,942,640 | |||
| 94 |
Cardinal Health, Inc.
Top agencies
|
$2,935,100 | ||
| 95 | $2,916,439 | |||
| 96 |
Centuria Corporation
Top agencies
|
$2,897,500 | ||
| 97 | $2,875,487 | |||
| 98 | $2,818,059 | |||
| 99 | $2,801,380 | |||
| 100 |
Mettler-Toledo International Inc.
|
$2,769,364 |
Show 75 more
100 of 1,985 contractors listed here. See the rest on GovTribe.
Rankings for the codes under NAICS 81121
| Code | Net obligations | Largest contractor |
|---|---|---|
| 811210 Electronic and Precision Equipment Repair and Maintenance | $1,867,331,446 | Leidos Holdings, Inc. |
How this ranking works
- Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
- Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $3.26 billion obligated before deobligations, so they never pass 100%.
- Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
- Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
- Rank changes compare with Aug 2024–Jul 2025. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
- Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list.
- Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.
Quick answers
Who were the top 10 NAICS 81121 contractors in Aug 2025–Jul 2026?
1. RTX Corporation ($315M), 2. Leidos Holdings, Inc. ($310M), 3. Lockheed Martin Corporation ($217M), 4. Techflow, Inc. ($200M), 5. The Boeing Company ($197M), 6. Northrop Grumman Systems Corporation ($175M), 7. S & K Security Group LLC ($135M), 8. Agiliti Health Inc ($96.5M), 9. Motorola Solutions, Inc. ($93.6M), 10. V2X, Inc. ($62.1M).
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