Top 100 Contractors in NAICS 81121: Electronic and Precision Equipment Repair and Maintenance, FY2025

Name: Top 100 Contractors in NAICS 81121: Electronic and Precision Equipment Repair and Maintenance, FY2025
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 56% of FY2025 NAICS 81121 contract dollars

Contract obligations: $3,200,359,365 Net of deobligations, by contracts coded NAICS 81121 or a code under it
Contractors: 2,158 Parent companies with an obligation
Largest contractor: RTX Corporation $541 million, 16.0% of obligations
Data as of: Oct 23, 2026

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	RTX Corporation 22 awardees, including Raytheon Company, Collins Elbit Vision Systems, LLC and Hamilton Sundstrand Corporation Top agencies MDA (DOD Missile Defense Agency) USAF (Department of the Air Force) DISA (Defense Information Systems Agency)	$541,016,076	16.0%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #8 in FY2024; up 7 since FY2024.
2	Techflow, Inc. Top agencies DHS (Department of Homeland Security)	$244,284,403	7.2%	Rank history: #2 in FY2021, #3 in FY2022, #2 in FY2023 and #1 in FY2024; down 1 since FY2024.
3	Leidos Holdings, Inc. 4 awardees, including Leidos, Inc. and Leidos Security Detection & Automation, Inc. Top agencies DHS (Department of Homeland Security) Army (Department of the Army) CSOSA (Court Services and Offender Supervision Agency)	$241,250,627	7.1%	Rank history: #5 in FY2021, #4 in FY2022, #5 in FY2023 and #5 in FY2024; up 2 since FY2024.
4	Lockheed Martin Corporation 9 awardees, including Lockheed Martin Coherent Technologies, Inc. and Sikorsky Aircraft Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$209,546,241	6.2%	Rank history: #9 in FY2021, #5 in FY2022, #6 in FY2023 and #4 in FY2024; unchanged since FY2024.
5	The Boeing Company 5 awardees, including Digital Receiver Technology, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$153,301,171	4.5%	Rank history: #6 in FY2021, #6 in FY2022, #8 in FY2023 and #7 in FY2024; up 2 since FY2024.
6	Northrop Grumman Systems Corporation 12 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DOT (Department of Transportation)	$145,985,394	4.3%	Rank history: #3 in FY2021, #2 in FY2022, #4 in FY2023 and #6 in FY2024; unchanged since FY2024.
7	V2X, Inc. 2 awardees, including V2X Systems LLC and Vertex Modernization and Sustainment LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$99,964,692	3.0%	Rank history: not on the FY2021–FY2023 lists and #12 in FY2024; up 5 since FY2024.
8	Huntington Ingalls Industries, Inc. 2 awardees, including Huntington Ingalls Inc. and HII Mission Technologies Corp Top agencies Navy (Department of the Navy) Army (Department of the Army)	$96,913,981	2.9%	Rank history: #7 in FY2021, #9 in FY2022, #21 in FY2023 and #17 in FY2024; up 9 since FY2024.
9	Motorola Solutions, Inc. 3 awardees, including Silvus Technologies, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$82,588,207	2.4%	Rank history: #11 in FY2021, #12 in FY2022, #10 in FY2023 and #21 in FY2024; up 12 since FY2024.
10	Cubic Defense Applications Inc. Top agencies USAF (Department of the Air Force)	$76,008,790	2.2%	Rank history: not on the FY2021–FY2023 lists and #20 in FY2024; up 10 since FY2024.
11	General Dynamics Corporation 6 awardees, including General Dynamics Information Technology, Inc. and General Dynamics Mission Systems, Inc. Top agencies DOT (Department of Transportation) USAF (Department of the Air Force) Army (Department of the Army)	$59,035,737	1.7%	Rank history: #12 in FY2021, #14 in FY2022, #14 in FY2023 and #14 in FY2024; up 3 since FY2024.
12	Rapiscan Systems Inc. Top agencies DHS (Department of Homeland Security) DOD (Department of Defense) Treasury (Department of the Treasury)	$54,288,391	1.6%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2024; up 7 since FY2024.
13	Raytheon Company Top agencies MDA (DOD Missile Defense Agency)	$42,108,416	1.2%	Rank history: #48 in FY2021, not on the FY2022–FY2023 lists and #3 in FY2024; down 10 since FY2024.
14	Agiliti Health Inc. 2 awardees Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$41,383,253	1.2%	Rank history: #10 in FY2021, #7 in FY2022, #3 in FY2023 and #2 in FY2024; down 12 since FY2024.
15	Peraton Inc. 2 awardees, including Knight Point Systems, LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$41,015,583	1.2%	Rank history: not on the FY2021–FY2024 lists; new.
16	L3Harris Technologies, Inc. 24 awardees, including L3 Technologies, Inc., Calzoni S.R.L. and Fisica Applied Technologies, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$35,793,974	1.1%	Rank history: #8 in FY2021, #10 in FY2022, #9 in FY2023 and #9 in FY2024; down 7 since FY2024.
17	Sonova Holding AG Through Sonova USA Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$31,652,922	0.9%	Rank history: #14 in FY2021, #17 in FY2022, #16 in FY2023 and #16 in FY2024; down 1 since FY2024.
18	Siemens Corporation 6 awardees, including Varian Medical Systems, Inc., Varex Imaging Corp and Siemens Medical Solutions Usa, Inc. Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) DHA (Defense Health Agency)	$31,034,893	0.9%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2024; up 17 since FY2024.
19	Calista Corp Through Yulista Support Services LLC Top agencies USAF (Department of the Air Force)	$30,177,099	0.9%	Rank history: #19 in FY2021, #26 in FY2022, #28 in FY2023 and not on the FY2024 list; up 107 since FY2024.
20	Cartridge Technologies, LLC Top agencies DLA (Defense Logistics Agency) DOI (Department of the Interior) Treasury (Department of the Treasury)	$28,737,229	0.8%	Rank history: #13 in FY2021, #11 in FY2022, #11 in FY2023 and #15 in FY2024; down 5 since FY2024.
21	Becton, Dickinson and Co 9 awardees, including Carefusion Solutions, LLC, Parata Systems LLC and Carefusion 2200 Inc. Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$25,579,244	0.8%	Rank history: #37 in FY2021, #43 in FY2022, #32 in FY2023 and #24 in FY2024; up 3 since FY2024.
22	Goldbelt, Incorporated 3 awardees, including Goldbelt Frontier, LLC, Goldbelt C6, LLC and Goldbelt Apex, LLC Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$23,372,946	0.7%	Rank history: #16 in FY2021, #29 in FY2022, #33 in FY2023 and #40 in FY2024; up 18 since FY2024.
23	JC Technology Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) HHS (Department of Health and Human Services)	$20,708,276	0.6%	Rank history: #27 in FY2021, #13 in FY2022, #15 in FY2023 and #11 in FY2024; down 12 since FY2024.
24	BAE Systems 12 awardees, including BAE Systems Information and Electronic Systems Integration Inc., BAE Systems Controls Inc. and BAE Systems (Operations) Limited Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$20,504,079	0.6%	Rank history: #33 in FY2021, #33 in FY2022, #17 in FY2023 and #26 in FY2024; up 2 since FY2024.
25	Teledyne Flir Unmanned Ground Systems Inc 16 awardees, including Teledyne Defense Electronics, LLC, Teledyne Flir Defense, LLC and Teledyne Risi, Inc. Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) DOT (Department of Transportation)	$20,151,629	0.6%	Rank history: #59 in FY2021, #38 in FY2022, #41 in FY2023 and #95 in FY2024; up 70 since FY2024.
26	Honeywell International Inc. 13 awardees, including Honeywell Analytics Inc. Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) Commerce (Department of Commerce)	$19,464,758	0.6%	Rank history: #24 in FY2021, #16 in FY2022, #25 in FY2023 and #23 in FY2024; down 3 since FY2024.
27	CACI International Inc. 2 awardees, including Caci, Inc. - Federal and Caci Idt, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$17,714,533	0.5%	Rank history: not on the FY2021 list, #71 in FY2022, #59 in FY2023 and #44 in FY2024; up 17 since FY2024.
28	Trillamed LLC Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) DOJ (Department of Justice)	$17,635,609	0.5%	Rank history: not on the FY2021–FY2024 lists; up 100 since FY2024.
29	Thermo Fisher Scientific Inc. 8 awardees, including Thermo Electron North America LLC, FEI Company and Life Technologies Corporation Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) Commerce (Department of Commerce)	$17,594,236	0.5%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023 and #28 in FY2024; down 1 since FY2024.
30	Pergravis LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) USSOCOM (United States Special Operations Command)	$17,508,736	0.5%	Rank history: #23 in FY2021, #24 in FY2022, #23 in FY2023 and #29 in FY2024; down 1 since FY2024.
31	Caes Systems LLC Top agencies Navy (Department of the Navy)	$17,503,749	0.5%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2024; up 1 since FY2024.
32	Apro International, Inc. Top agencies USAF (Department of the Air Force)	$17,145,296	0.5%	Rank history: #25 in FY2021, #34 in FY2022, #26 in FY2023 and #25 in FY2024; down 7 since FY2024.
33	Danaher Corporation 13 awardees, including Cepheid, Leica Microsystems Inc. and Beckman Coulter, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$16,330,793	0.5%	Rank history: #26 in FY2021, #32 in FY2022, #29 in FY2023 and #31 in FY2024; down 2 since FY2024.
34	Steris Corporation 2 awardees, including Steris Instrument Management Services, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) USDA (Department of Agriculture)	$14,978,314	0.4%	Rank history: #45 in FY2021, #39 in FY2022, #38 in FY2023 and #37 in FY2024; up 3 since FY2024.
35	Elbit Systems of America LLC Through Elbitamerica, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$13,981,449	0.4%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2024; up 14 since FY2024.
36	Smiths Detection Inc. Top agencies DHS (Department of Homeland Security) USDA (Department of Agriculture) HHS (Department of Health and Human Services)	$13,734,802	0.4%	Rank history: not on the FY2021–FY2023 lists and #38 in FY2024; up 2 since FY2024.
37	Interfuze Corporation Top agencies Army (Department of the Army)	$13,335,292	0.4%	Rank history: #82 in FY2021, #49 in FY2022, #35 in FY2023 and #33 in FY2024; down 4 since FY2024.
38	General Electric Company 12 awardees, including GE Aviation Systems LLC, GE Precision Healthcare LLC and GE Medical Systems Information Technologies, Inc. Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$12,932,191	0.4%	Rank history: #30 in FY2021, #27 in FY2022, #27 in FY2023 and #47 in FY2024; up 9 since FY2024.
39	L3 Technologies, Inc. Top agencies USAF (Department of the Air Force)	$12,501,829	0.4%	Rank history: not on the FY2021–FY2024 lists; up 187 since FY2024.
40	Olympus America Inc. 2 awardees, including Olympus Latin America, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Army (Department of the Army)	$12,484,437	0.4%	Rank history: #51 in FY2021, #62 in FY2022, #43 in FY2023 and #45 in FY2024; up 5 since FY2024.
41	Thomas Instrument, Incorporated Top agencies USAF (Department of the Air Force)	$11,760,818	0.3%	Rank history: not on the FY2021 list, #52 in FY2022, #89 in FY2023 and #74 in FY2024; up 33 since FY2024.
42	The Chenega Corporation 2 awardees, including Chenega It Enterprise Services, LLC and Chenega Worldwide Support, LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$11,583,558	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
43	E3 Diagnostics Inc. 5 awardees, including Oticon, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$11,379,060	0.3%	Rank history: #49 in FY2021, #46 in FY2022, #39 in FY2023 and not on the FY2024 list; returned.
44	Eaton Corporation Public Limited Company 5 awardees, including Eaton Corporation, Eaton Aerospace LLC and Eaton Industries (Italy) S.R.L. Top agencies DOT (Department of Transportation) VA (Department of Veterans Affairs) DOS (Department of State)	$11,043,702	0.3%	Rank history: #38 in FY2021, #48 in FY2022, #42 in FY2023 and not on the FY2024 list; up 90 since FY2024.
45	Integrated Procurement Technologies Top agencies USAF (Department of the Air Force)	$9,252,108	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
46	Mesotech International, Inc. Top agencies USAF (Department of the Air Force)	$8,534,622	0.3%	Rank history: #95 in FY2021, not on the FY2022–FY2023 lists and #39 in FY2024; down 7 since FY2024.
47	Laboratory Equipment Service, LLC Top agencies HHS (Department of Health and Human Services)	$7,842,950	0.2%	Rank history: not on the FY2021 list, #68 in FY2022, #51 in FY2023 and #51 in FY2024; up 4 since FY2024.
48	Koninklijke Philips N.V. 7 awardees, including Philips North America LLC, Philips GMBH and Invivo Corporation Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$7,585,872	0.2%	Rank history: #69 in FY2021, #54 in FY2022, #47 in FY2023 and not on the FY2024 list; up 85 since FY2024.
49	Getinge USA Sales, LLC Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$7,236,727	0.2%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2024; up 7 since FY2024.
50	GN US Holdings Inc Through GN Hearing Care Corporation Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$6,361,373	0.2%	Rank history: not on the FY2021–FY2023 lists and #48 in FY2024; down 2 since FY2024.
51	Agilent Technologies, Inc. 3 awardees Top agencies Navy (Department of the Navy) Army (Department of the Army) DHA (Defense Health Agency)	$6,284,299	0.2%	Rank history: not on the FY2021–FY2023 lists and #55 in FY2024; up 4 since FY2024.
52	Stryker Corporation 7 awardees, including Stryker Sales, LLC, Howmedica Osteonics Corp and Stryker Communications Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$6,238,831	0.2%	Rank history: #44 in FY2021, #44 in FY2022, #44 in FY2023 and #52 in FY2024; unchanged since FY2024.
53	Blackwood Associates, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) USITC (International Trade Commission)	$6,201,946	0.2%	Rank history: not on the FY2021–FY2024 lists; up 273 since FY2024.
54	Sustainment Technologies, LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$5,982,814	0.2%	Rank history: #71 in FY2021, #74 in FY2022, #67 in FY2023 and #57 in FY2024; up 3 since FY2024.
55	Starkey Laboratories Inc. Top agencies VA (Department of Veterans Affairs)	$5,841,170	0.2%	Rank history: #39 in FY2021, #47 in FY2022, #31 in FY2023 and #46 in FY2024; down 9 since FY2024.
56	The Bionetics Corporation Top agencies DOT (Department of Transportation) HHS (Department of Health and Human Services)	$5,813,282	0.2%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2023 and #60 in FY2024; up 4 since FY2024.
57	Hologic, Inc. 2 awardees, including Hologic Sales and Service, LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$5,250,025	0.2%	Rank history: #96 in FY2021, #83 in FY2022, #87 in FY2023 and not on the FY2024 list; up 56 since FY2024.
58	Utah State University Through Utah State University Space Dynamics Laboratory Top agencies USAF (Department of the Air Force)	$5,148,850	0.2%	Rank history: not on the FY2021 list, #25 in FY2022, #37 in FY2023 and not on the FY2024 list; returned.
59	Orbit Communication Systems, Inc. Top agencies USAF (Department of the Air Force)	$5,140,391	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
60	Frontier Strategies LLC Top agencies DHA (Defense Health Agency) Army (Department of the Army)	$4,741,086	0.1%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2023 and #89 in FY2024; up 29 since FY2024.
61	Murtech, Inc. Top agencies Army (Department of the Army)	$4,718,604	0.1%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2024; down 3 since FY2024.
62	AGFA-GEVAERT 2 awardees, including Agfa Healthcare Corporation and Agfa US Corp Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Navy (Department of the Navy)	$4,629,441	0.1%	Rank history: not on the FY2021–FY2024 lists; up 52 since FY2024.
63	Clear Align LLC Top agencies DOT (Department of Transportation)	$4,460,182	0.1%	Rank history: #66 in FY2021, #87 in FY2022, not on the FY2023 list and #70 in FY2024; up 7 since FY2024.
64	Widex USA Inc. 2 awardees, including WS Audiology Usa, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$4,428,743	0.1%	Rank history: not on the FY2021–FY2024 lists; up 46 since FY2024.
65	Stryker Sales, LLC 5 awardees Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Navy (Department of the Navy)	$4,369,467	0.1%	Rank history: not on the FY2021–FY2024 lists; up 222 since FY2024.
66	Applied Systems Engineering Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$4,349,204	0.1%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023 and not on the FY2024 list; up 78 since FY2024.
67	Allegiance Supply Inc. Top agencies Navy (Department of the Navy)	$4,311,405	0.1%	Rank history: not on the FY2021–FY2023 lists and #78 in FY2024; up 11 since FY2024.
68	Illumina, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$4,266,302	0.1%	Rank history: #58 in FY2021, #58 in FY2022, #65 in FY2023 and #66 in FY2024; down 2 since FY2024.
69	Medtronic Inc. 7 awardees, including Covidien Sales LLC, Medtronic USA Inc. and Medtronic Sofamor Danek Usa, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Navy (Department of the Navy)	$4,041,390	0.1%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023 and #71 in FY2024; up 2 since FY2024.
70	Rolls-Royce Corporation Top agencies USAF (Department of the Air Force)	$4,026,624	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
71	CPI Electron Device Business, Inc. 3 awardees, including Microwave Power Products, Inc. Top agencies USAF (Department of the Air Force) DOT (Department of Transportation) Navy (Department of the Navy)	$3,998,837	0.1%	Rank history: not on the FY2021–FY2024 lists; up 266 since FY2024.
72	KBR Wyle Services LLC Top agencies DOI (Department of the Interior)	$3,990,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
73	Bruker Scientific LLC 5 awardees, including Bruker Biospin Corp, Bruker AXS LLC and Bruker Spatial Biology, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$3,886,070	0.1%	Rank history: not on the FY2021–FY2024 lists; up 35 since FY2024.
74	Ametek Inc. 18 awardees, including Spectro Scientific, Inc., Nsi-Mi Technologies Inc. and Gatan Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) HHS (Department of Health and Human Services)	$3,815,741	0.1%	Rank history: #57 in FY2021, #97 in FY2022 and not on the FY2023–FY2024 lists; up 29 since FY2024.
75	Fortive Corporation 3 awardees, including Advanced Sterilization Products Services Inc. and Fluke Electronics Corp Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Army (Department of the Army)	$3,770,008	0.1%	Rank history: not on the FY2021–FY2023 lists and #93 in FY2024; up 18 since FY2024.
76	Cardinal Health, Inc. 3 awardees, including Biosense Webster, Inc., Wavemark, Inc. and Cardinal Health P.r. 220, LLC Top agencies VA (Department of Veterans Affairs)	$3,705,734	0.1%	Rank history: not on the FY2021–FY2024 lists; up 196 since FY2024.
77	Saab, Inc. Top agencies DOS (Department of State) Navy (Department of the Navy)	$3,526,395	0.1%	Rank history: not on the FY2021–FY2024 lists; up 122 since FY2024.
78	TD Synnex Corporation 2 awardees, including TECH Data Government Solutions, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DHA (Defense Health Agency)	$3,514,165	0.1%	Rank history: not on the FY2021–FY2024 lists; up 322 since FY2024.
79	Caylor Equipment Services LLC Top agencies VA (Department of Veterans Affairs)	$3,333,211	0.1%	Rank history: not on the FY2021–FY2023 lists and #83 in FY2024; up 4 since FY2024.
80	Rees Scientific Corporation Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services) Navy (Department of the Navy)	$3,326,679	0.1%	Rank history: not on the FY2021–FY2023 lists and #97 in FY2024; up 17 since FY2024.
81	Baxter Healthcare Corporation 3 awardees, including Hill-Rom, Inc. and Welch Allyn, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$3,268,731	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
82	Centuria Corporation Top agencies Commerce (Department of Commerce)	$3,154,768	0.1%	Rank history: not on the FY2021–FY2022 lists, #95 in FY2023 and #96 in FY2024; up 14 since FY2024.
83	At&T Inc. Through At&T Technical Services Company, Inc. Top agencies DHS (Department of Homeland Security)	$3,127,077	0.1%	Rank history: #67 in FY2021, #75 in FY2022, #71 in FY2023 and not on the FY2024 list; returned.
84	Proaim Americas LLC. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$3,022,537	0.1%	Rank history: not on the FY2021–FY2024 lists; up 28 since FY2024.
85	Keysight Technologies, Inc. 5 awardees, including Spirent Federal Systems Inc. and Cast Navigation, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$2,878,292	0.1%	Rank history: not on the FY2021–FY2024 lists; up 24 since FY2024.
86	Shiers Communication Specialists Inc. Top agencies Army (Department of the Army)	$2,863,296	0.1%	Rank history: not on the FY2021 list, #92 in FY2022 and not on the FY2023–FY2024 lists; up 30 since FY2024.
87	Mettler-Toledo International Inc. 2 awardees, including Mettler-Toledo LLC and Mettler-Toledo Rainin, LLC Top agencies DECA (Defense Commissary Agency) HHS (Department of Health and Human Services) Commerce (Department of Commerce)	$2,857,695	0.1%	Rank history: not on the FY2021–FY2024 lists; up 56 since FY2024.
88	Endoscopy Repair Specialist Inc. Top agencies VA (Department of Veterans Affairs)	$2,807,030	0.1%	Rank history: not on the FY2021–FY2023 lists and #98 in FY2024; up 10 since FY2024.
89	Mirion Technologies (Canberra), Inc. 4 awardees, including Sun Nuclear Corp. Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$2,673,308	0.1%	Rank history: not on the FY2021–FY2024 lists; up 34 since FY2024.
90	Excentium, Inc. Top agencies DHA (Defense Health Agency)	$2,648,859	0.1%	Rank history: not on the FY2021 list, #82 in FY2022, #64 in FY2023 and #84 in FY2024; down 6 since FY2024.
91	K2Share, LLC Top agencies DOT (Department of Transportation)	$2,645,769	0.1%	Rank history: #80 in FY2021, #79 in FY2022, #88 in FY2023 and #79 in FY2024; down 12 since FY2024.
92	Karl Storz Endoscopy-America Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$2,619,458	0.1%	Rank history: not on the FY2021–FY2024 lists; up 26 since FY2024.
93	Integrated Production Systems, Inc. Top agencies Army (Department of the Army)	$2,575,608	0.1%	Rank history: not on the FY2021–FY2024 lists; up 13 since FY2024.
94	Taft Broadcasting Company, L.L.C. Top agencies DMA (Defense Media Activity)	$2,553,756	0.1%	Rank history: #72 in FY2021, #72 in FY2022, #66 in FY2023 and #67 in FY2024; down 27 since FY2024.
95	Linmarr Associates, Inc. Top agencies USAF (Department of the Air Force)	$2,544,481	0.1%	Rank history: not on the FY2021–FY2024 lists; up 278 since FY2024.
96	Draeger Inc. 2 awardees, including Draeger Japan Ltd. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Army (Department of the Army)	$2,533,719	0.1%	Rank history: not on the FY2021–FY2024 lists; up 50 since FY2024.
97	Perkinelmer U.s. LLC Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$2,528,745	0.1%	Rank history: not on the FY2021–FY2024 lists; up 312 since FY2024.
98	Revvity Inc. 6 awardees, including Revvity Health Sciences, Inc., Euroimmun US Incorporated and Perkinelmer Japan G.k. Top agencies HHS (Department of Health and Human Services) EPA (Environmental Protection Agency) DHA (Defense Health Agency)	$2,527,251	0.1%	Rank history: #86 in FY2021, #76 in FY2022, #91 in FY2023 and not on the FY2024 list; up 245 since FY2024.
99	Carl Zeiss Microscopy, LLC Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) Commerce (Department of Commerce)	$2,526,315	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
100	Advanced Electronics Company Limited Top agencies USAF (Department of the Air Force)	$2,354,357	0.1%	Rank history: not on the FY2021–FY2024 lists; new.

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100 of 2,158 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	$1,591,362,041	Techflow, 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 $3.39 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.
Fiscal year 2025 ran Oct 1, 2024 – Sep 30, 2025. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2024. "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. The step from FY2024 takes the color of the rank change beside it.
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 FY2025?

1. RTX Corporation ($541M), 2. Techflow, Inc. ($244M), 3. Leidos Holdings, Inc. ($241M), 4. Lockheed Martin Corporation ($210M), 5. The Boeing Company ($153M), 6. Northrop Grumman Systems Corporation ($146M), 7. V2X, Inc. ($100M), 8. Huntington Ingalls Industries, Inc. ($96.9M), 9. Motorola Solutions, Inc. ($82.6M), 10. Cubic Defense Applications Inc. ($76M).

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