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

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: 2,260 Parent companies with an obligation
Largest contractor: RTX Corporation $541 million, 16.0% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

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 10 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 Corporation 12 awardees, including Northrop Grumman Systems Corp 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. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$84,680,875	2.5%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2024; up 1 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. 22 awardees, including L3 Technologies, Inc., Calzoni S.R.L. and Acron Aviation, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$36,034,427	1.1%	Rank history: #8 in FY2021, #10 in FY2022, #9 in FY2023 and #9 in FY2024; down 7 since FY2024.
17	Sonova USA Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$31,656,852	0.9%	Rank history: not on the FY2021–FY2024 lists; new.
18	Yulista Support Services LLC Top agencies USAF (Department of the Air Force)	$30,177,099	0.9%	Rank history: not on the FY2021–FY2023 lists and #30 in FY2024; up 12 since FY2024.
19	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 4 since FY2024.
20	Siemens Corporation 3 awardees, including Varian Medical Systems, Inc., Siemens Medical Solutions Usa, Inc. and Siemens Healthcare Diagnostics Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$26,193,775	0.8%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2024; up 15 since FY2024.
21	Becton, Dickinson and Co 8 awardees, including Carefusion Solutions, LLC, Parata Systems LLC and GSL Solutions Inc. Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$25,325,045	0.7%	Rank history: #37 in FY2021, #43 in FY2022, #32 in FY2023 and #24 in FY2024; up 3 since FY2024.
22	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 11 since FY2024.
23	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 3 since FY2024.
24	Goldbelt Frontier, LLC Top agencies Army (Department of the Army) HHS (Department of Health and Human Services)	$18,858,371	0.6%	Rank history: #18 in FY2021, #23 in FY2022, #20 in FY2023 and #18 in FY2024; down 6 since FY2024.
25	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 19 since FY2024.
26	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 102 since FY2024.
27	PPD Development LP 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; up 1 since FY2024.
28	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; up 1 since FY2024.
29	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 3 since FY2024.
30	Honeywell International Inc. 10 awardees, including Honeywell Analytics Inc. Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) Commerce (Department of Commerce)	$17,297,239	0.5%	Rank history: #24 in FY2021, #16 in FY2022, #25 in FY2023 and #23 in FY2024; down 7 since FY2024.
31	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 6 since FY2024.
32	Danaher Corporation 11 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)	$15,425,912	0.5%	Rank history: #26 in FY2021, #32 in FY2022, #29 in FY2023 and #31 in FY2024; down 1 since FY2024.
33	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 16 since FY2024.
34	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 4 since FY2024.
35	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 2 since FY2024.
36	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 11 since FY2024.
37	Steris Corporation Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) USDA (Department of Agriculture)	$12,739,842	0.4%	Rank history: #45 in FY2021, #39 in FY2022, #38 in FY2023 and #37 in FY2024; unchanged since FY2024.
38	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 188 since FY2024.
39	Olympus America Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Army (Department of the Army)	$12,252,362	0.4%	Rank history: #51 in FY2021, #62 in FY2022, #43 in FY2023 and #45 in FY2024; up 6 since FY2024.
40	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 34 since FY2024.
41	Eaton Corporation Top agencies DOT (Department of Transportation) DOS (Department of State) WHS (DOD Washington Headquarters Service)	$10,697,787	0.3%	Rank history: #38 in FY2021, not on the FY2022–FY2023 lists and #53 in FY2024; up 12 since FY2024.
42	Oticon, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$10,454,541	0.3%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2024; down 8 since FY2024.
43	Chenega It Enterprise Services, LLC Top agencies DHS (Department of Homeland Security)	$9,767,267	0.3%	Rank history: #17 in FY2021, #37 in FY2022, #22 in FY2023 and #27 in FY2024; down 16 since FY2024.
44	Integrated Procurement Technologies Top agencies USAF (Department of the Air Force)	$9,252,108	0.3%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2024; down 2 since FY2024.
45	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 6 since FY2024.
46	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 5 since FY2024.
47	Teledyne Defense Electronics, LLC Top agencies USAF (Department of the Air Force)	$7,812,449	0.2%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2024; up 3 since FY2024.
48	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 8 since FY2024.
49	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 1 since FY2024.
50	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 5 since FY2024.
51	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 275 since FY2024.
52	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 5 since FY2024.
53	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 7 since FY2024.
54	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 6 since FY2024.
55	Teledyne Flir Defense, Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) DOI (Department of the Interior)	$5,726,451	0.2%	Rank history: not on the FY2021–FY2024 lists; up 87 since FY2024.
56	Teledyne Technologies Incorporated 8 awardees, including Teledyne Flir Defense, LLC, Teledyne Risi, Inc. and Teledyne Reson Inc. Top agencies DOT (Department of Transportation) USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$5,369,126	0.2%	Rank history: #59 in FY2021, #38 in FY2022, #41 in FY2023 and #95 in FY2024; up 39 since FY2024.
57	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–FY2024 lists; new.
58	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.
59	Philips North America LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$5,130,308	0.2%	Rank history: not on the FY2021–FY2024 lists; up 68 since FY2024.
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	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 79 since FY2024.
66	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 12 since FY2024.
67	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 1 since FY2024.
68	Rolls-Royce Solutions America Inc. Through 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.
69	Medtronic Public Limited Company 6 awardees, including Covidien Sales LLC, Medtronic Inc. and Medtronic USA Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Navy (Department of the Navy)	$3,999,919	0.1%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023 and #71 in FY2024; up 2 since FY2024.
70	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.
71	Varex Imaging Corp Top agencies DHS (Department of Homeland Security)	$3,956,149	0.1%	Rank history: not on the FY2021–FY2023 lists and #75 in FY2024; up 4 since FY2024.
72	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 21 since FY2024.
73	Stryker Sales, LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$3,714,931	0.1%	Rank history: not on the FY2021–FY2024 lists; up 65 since FY2024.
74	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 198 since FY2024.
75	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 124 since FY2024.
76	Goldbelt C6, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$3,414,348	0.1%	Rank history: not on the FY2021–FY2024 lists; up 79 since FY2024.
77	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 6 since FY2024.
78	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 19 since FY2024.
79	Hologic, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$3,222,474	0.1%	Rank history: #96 in FY2021, #83 in FY2022, #87 in FY2023 and not on the FY2024 list; up 34 since FY2024.
80	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 16 since FY2024.
81	At&T Technical Services Company, Inc. Top agencies DHS (Department of Homeland Security)	$3,127,077	0.1%	Rank history: not on the FY2021–FY2024 lists; up 304 since FY2024.
82	Bruker Corporation 3 awardees, including Bruker Scientific LLC, Bruker Biospin Corp and Bruker Nano, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$3,096,538	0.1%	Rank history: not on the FY2021–FY2024 lists; up 26 since FY2024.
83	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 29 since FY2024.
84	TD Synnex Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DHA (Defense Health Agency)	$2,966,830	0.1%	Rank history: not on the FY2021–FY2024 lists; up 316 since FY2024.
85	Microwave Power Products, Inc. Top agencies USAF (Department of the Air Force) DOT (Department of Transportation) Navy (Department of the Navy)	$2,932,194	0.1%	Rank history: not on the FY2021–FY2024 lists; up 73 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	Ametek Inc. 13 awardees, including Spectro Scientific, Inc., Nsi-Mi Technologies Inc. and Sound COM Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) VA (Department of Veterans Affairs)	$2,753,835	0.1%	Rank history: #57 in FY2021, #97 in FY2022 and not on the FY2023–FY2024 lists; up 14 since FY2024.
90	Mirion Technologies (CAPINTEC) Inc. 4 awardees, including Mirion Technologies (Canberra), Inc. and 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 33 since FY2024.
91	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 7 since FY2024.
92	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 13 since FY2024.
93	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 25 since FY2024.
94	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 12 since FY2024.
95	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 28 since FY2024.
96	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 277 since FY2024.
97	Revvity Health Sciences, Inc. Top agencies HHS (Department of Health and Human Services) EPA (Environmental Protection Agency) DHA (Defense Health Agency)	$2,539,592	0.1%	Rank history: not on the FY2021–FY2024 lists; up 22 since FY2024.
98	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 311 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	Hill-Rom, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$2,493,836	0.1%	Rank history: not on the FY2021–FY2024 lists; new.

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100 of 2,260 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. 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 Corporation ($146M), 7. V2X, Inc. ($100M), 8. Huntington Ingalls Industries, Inc. ($96.9M), 9. Motorola Solutions, Inc. ($84.7M), 10. Cubic Defense Applications Inc. ($76M).

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