Top 100 Contractors in NAICS 81121: Electronic and Precision Equipment Repair and Maintenance, Jul 2025–Jun 2026

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 58% of NAICS 81121 contract dollars from July 2025 through June 2026

Contract obligations
$3,435,615,583 Net of deobligations, by contracts coded NAICS 81121 or a code under it
Contractors
2,073 Parent companies with an obligation
Largest contractor
RTX Corporation $417 million, 11.5% of obligations
Data as of

Contract actions from FPDS (SAM.gov). How the rankings work · Download

Full ranking

Rank Contractor Net obligations Share Trend
1
RTX Corporation 36 awardees, including Raytheon Company, Collins Elbit Vision Systems, LLC and Data Link Solutions LLC
Top agencies
$416,852,218
2
Leidos Holdings, Inc. 4 awardees, including Leidos, Inc. and Leidos Security Detection & Automation, Inc.
Top agencies
$406,102,773
3
Techflow, Inc.
Top agencies
$329,115,250
4
Lockheed Martin Corporation 8 awardees, including Lockheed Martin Global, Inc., Sikorsky Aircraft Corporation and Lockheed Martin Coherent Technologies, Inc.
Top agencies
$227,401,876
5
The Boeing Company 5 awardees, including Digital Receiver Technology, Inc.
Top agencies
$187,426,294
6
Northrop Grumman Systems Corporation 11 awardees
Top agencies
$158,876,634
7
S & K Security Group LLC
Top agencies
$114,653,121
8
Agiliti Health Inc
Top agencies
$95,045,619
9
Huntington Ingalls Industries, Inc. 3 awardees, including Huntington Ingalls Inc. and HII Mission Technologies Corp
Top agencies
$86,762,209
10
Motorola Solutions, Inc.
Top agencies
$86,245,053
11
V2X, Inc. 2 awardees, including V2X Systems LLC and Vertex Modernization and Sustainment LLC
Top agencies
$62,358,548
12
General Dynamics Corporation 6 awardees, including General Dynamics Information Technology, Inc. and General Dynamics Mission Systems, Inc.
Top agencies
$56,944,196
13
Rapiscan Systems Inc.
Top agencies
$56,096,657
14
Cubic Defense Applications Inc.
Top agencies
$50,615,841
15
L3Harris Technologies, Inc. 18 awardees, including L3 Technologies, Inc., L3Harris Maritime Power & Energy Solutions, Inc. and NV5 Geospatial Solutions, Inc.
Top agencies
$43,848,708
16
Peraton Inc. 2 awardees, including Knight Point Systems, LLC
Top agencies
$36,004,071
17
Siemens Corporation 3 awardees, including Varian Medical Systems, Inc., Siemens Medical Solutions Usa, Inc. and Siemens Healthcare Diagnostics Inc.
Top agencies
$31,795,648
18
Yulista Support Services LLC
Top agencies
$27,243,918
19
BAE Systems 13 awardees, including BAE Systems Information and Electronic Systems Integration Inc., BAE Systems Controls Inc. and BAE Systems (Operations) Limited
Top agencies
$26,618,615
20
Becton, Dickinson and Co 9 awardees, including Carefusion Solutions, LLC, Parata Systems LLC and GSL Solutions Inc.
Top agencies
$26,260,269
21
JC Technology Inc.
Top agencies
$23,187,920
22
Honeywell International Inc. 8 awardees
Top agencies
$22,056,620
23
CACI International Inc. 2 awardees, including Caci, Inc. - Federal and Caci Idt, LLC
Top agencies
$21,378,444
24
Goldbelt Frontier, LLC
Top agencies
$20,980,557
25
IAP World Services, Inc.
Top agencies
$19,048,660
26
Apro International, Inc.
Top agencies
$18,993,456
27
Pergravis LLC
Top agencies
$18,783,174
28
Thermo Fisher Scientific Inc. 10 awardees, including Life Technologies Corporation, Thermo Electron North America LLC and FEI Company
Top agencies
$18,096,199
29
Cartridge Technologies, LLC
Top agencies
$17,539,107
30
Trillamed LLC
Top agencies
$17,137,283
31
L3 Technologies, Inc.
Top agencies
$15,176,298
32
Danaher Corporation 11 awardees, including Cepheid, Leica Microsystems Inc. and AB Sciex LLC
Top agencies
$13,814,277
33
General Electric Company 10 awardees, including GE Aviation Systems LLC, GE Precision Healthcare LLC and GE Medical Systems Information Technologies, Inc.
Top agencies
$13,587,074
34
Caes Systems LLC
Top agencies
$13,292,322
35
Interfuze Corporation
Top agencies
$12,638,925
36
Steris Corporation
Top agencies
$12,432,417
37
Thomas Instrument, Incorporated
Top agencies
$11,680,904
38
Guidehouse Inc. Through Peraton Inc.
Top agencies
$11,673,265
39
Olympus America Inc.
Top agencies
$10,895,292
40
Sonova USA Inc.
Top agencies
$9,744,726
41
Frontier Strategies LLC
Top agencies
$9,154,741
42
Stryker Sales, LLC 4 awardees
Top agencies
$9,113,912
43
Integrated Procurement Technologies
Top agencies
$8,943,106
44
Elbit Systems of America LLC Through Elbitamerica, Inc.
Top agencies
$8,886,356
45
Laboratory Equipment Service, LLC
Top agencies
$8,425,164
46
Eaton Corporation
Top agencies
$8,210,182
47
Murtech, Inc.
Top agencies
$6,935,740
48
Agilent Technologies, Inc. 4 awardees
Top agencies
$6,919,791
49
The Bionetics Corporation
Top agencies
$6,904,740
50
Teledyne Flir Defense, Inc.
Top agencies
$6,657,919
51
Mesotech International, Inc.
Top agencies
$6,624,563
52
Getinge USA Sales, LLC
Top agencies
$6,518,916
53
Teledyne Flir Unmanned Ground Systems Inc 6 awardees, including Teledyne Flir Defense, LLC, Teledyne Instruments, Inc. and Teledyne Reson Inc.
Top agencies
$6,476,458
54
Blackwood Associates, Inc.
Top agencies
$6,360,146
55
Microwave Power Products, Inc. 2 awardees
Top agencies
$6,186,949
56
Philips North America LLC
Top agencies
$6,141,923
57
Chenega It Enterprise Services, LLC
Top agencies
$5,814,704
58
Sustainment Technologies, LLC
Top agencies
$5,568,588
59
Chugach Solutions Enterprise, LLC
Top agencies
$5,308,334
60
Goldbelt C6, LLC
Top agencies
$5,033,082
61
AGFA-GEVAERT 2 awardees, including Agfa Healthcare Corporation and Agfa US Corp
Top agencies
$4,557,426
62
Fortive Corporation 3 awardees, including Advanced Sterilization Products Services Inc., Censis Technologies, Inc. and Fluke Electronics Corp
Top agencies
$4,556,291
63
Allegiance Supply Inc.
Top agencies
$4,331,369
64
Science & Management Resources Inc.
Top agencies
$4,050,467
65
Karl Storz Endoscopy-America Inc.
Top agencies
$4,033,244
66
Omnicell, Inc.
Top agencies
$3,826,829
67
Clear Align LLC
Top agencies
$3,813,684
68
Proaim Americas LLC.
Top agencies
$3,679,146
69
Kbr, Inc. Through KBR Wyle Services, LLC
Top agencies
$3,641,715
70
Endoscopy Repair Specialist Inc.
Top agencies
$3,639,589
71
Varex Imaging Corp
Top agencies
$3,600,194
72
L1 Enterprises Incorporated
Top agencies
$3,581,181
73
Oticon, Inc.
Top agencies
$3,561,287
74
Illumina, Inc.
Top agencies
$3,551,637
75
Medtronic Inc. 6 awardees, including Covidien Sales LLC and Medtronic USA Inc.
Top agencies
$3,459,690
76
Curtiss-Wright Flow Control Service, LLC
Top agencies
$3,380,512
77
Caylor Equipment Services LLC
Top agencies
$3,380,250
78
Revvity Health Sciences, Inc.
Top agencies
$3,338,549
79
Hill-Rom, Inc.
Top agencies
$3,333,300
80
Excentium, Inc.
Top agencies
$3,290,716
81
Bruker Scientific LLC 3 awardees, including Bruker Biospin Corp and Bruker Nano, Inc.
Top agencies
$3,164,613
82
Hologic, Inc.
Top agencies
$3,149,889
83
Orbit Communication Systems, Inc.
Top agencies
$3,133,032
84
At&T Technical Services Company, Inc.
Top agencies
$3,085,758
85
Rees Scientific Corporation
Top agencies
$3,040,136
86
Applied Systems Engineering Inc.
Top agencies
$3,030,325
87
Mitomo Co., Ltd.
Top agencies
$3,001,262
88
Cardinal Health, Inc. 3 awardees, including Biosense Webster, Inc., Wavemark, Inc. and Cardinal Health P.r. 220, LLC
Top agencies
$2,984,527
89
Chenega Worldwide Support, LLC
Top agencies
$2,931,290
90
Evoqua Water Technologies LLC 4 awardees, including CMS Research Corp
Top agencies
$2,914,985
91
Centuria Corporation
Top agencies
$2,897,500
92
Mirion Technologies (Canberra), Inc. 4 awardees, including Sun Nuclear Corp.
Top agencies
$2,888,425
93
Eaton Corporation Public Limited Company 5 awardees, including Eaton Corporation, Eaton Aerospace LLC and Eaton Industries (Italy) S.R.L.
Top agencies
$2,874,721
94
Steris Instrument Management Services, Inc.
Top agencies
$2,862,649
95
Ametek Inc. 9 awardees, including Spectro Scientific, Inc., Nsi-Mi Technologies Inc. and Cameca Instruments, Inc.
Top agencies
$2,841,705
96
Mettler-Toledo International Inc. 3 awardees, including Mettler-Toledo LLC, Mettler-Toledo Autochem, Inc. and Mettler-Toledo Rainin, LLC
Top agencies
$2,797,700
97
Cority Software Inc.
Top agencies
$2,785,700
98
Carl Zeiss Microscopy, LLC
Top agencies
$2,785,349
99
Integrated Production Systems, Inc.
Top agencies
$2,775,608
100
The Woods Hole Group, Inc.
Top agencies
$2,768,629
Show 75 more

100 of 2,073 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 $2,102,433,140 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 $3.62 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. 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 Jul 2024–Jun 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 Jul 2025–Jun 2026?

1. RTX Corporation ($417M), 2. Leidos Holdings, Inc. ($406M), 3. Techflow, Inc. ($329M), 4. Lockheed Martin Corporation ($227M), 5. The Boeing Company ($187M), 6. Northrop Grumman Systems Corporation ($159M), 7. S & K Security Group LLC ($115M), 8. Agiliti Health Inc ($95M), 9. Huntington Ingalls Industries, Inc. ($86.8M), 10. Motorola Solutions, Inc. ($86.2M).

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