Top 100 Contractors in NAICS 3345: Navigational, Measuring, Electromedical, and Control Instruments Manufacturing, FY2025

Name: Top 100 Contractors in NAICS 3345: Navigational, Measuring, Electromedical, and Control Instruments Manufacturing, FY2025
Creator: GovTribe

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

The top 10 won 67% of FY2025 NAICS 3345 contract dollars

Contract obligations: $24,859,767,155 Net of deobligations, by contracts coded NAICS 3345 or a code under it
Contractors: 4,071 Parent companies with an obligation
Largest contractor: RTX Corporation $8.21 billion, 32.0% 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 45 awardees, including Raytheon Company and Rockwell Collins, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$8,211,169,633	32.0%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2024; unchanged since FY2024.
2	Lockheed Martin Corporation 19 awardees Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) MDA (DOD Missile Defense Agency)	$3,232,777,937	12.6%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and #2 in FY2024; unchanged since FY2024.
3	Northrop Grumman Corporation 31 awardees, including Northrop Grumman Systems Corporation Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$1,525,834,964	5.9%	Rank history: #3 in FY2021, #3 in FY2022, #3 in FY2023 and #3 in FY2024; unchanged since FY2024.
4	The Boeing Company 16 awardees, including Argon ST, Inc., Jeppesen Foreflight, Inc. and Boeing Distribution, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$850,779,867	3.3%	Rank history: #12 in FY2021, #11 in FY2022, #4 in FY2023 and #4 in FY2024; unchanged since FY2024.
5	L3Harris Technologies, Inc. 36 awardees, including L3 Technologies, Inc., Wescam Usa, Inc. and L3Harris Interstate Electronics Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$758,917,656	3.0%	Rank history: #4 in FY2021, #4 in FY2022, #5 in FY2023 and #8 in FY2024; up 3 since FY2024.
6	Leonardo S.p.A. 17 awardees, including DRS Sustainment Systems, Inc., DRS Network & Imaging Systems LLC and Laurel Technologies Partnership Top agencies Army (Department of the Army) Navy (Department of the Navy) USSOCOM (United States Special Operations Command)	$744,274,119	2.9%	Rank history: #7 in FY2021, #6 in FY2022, #6 in FY2023 and #5 in FY2024; down 1 since FY2024.
7	BAE Systems 15 awardees, including BAE Systems Information and Electronic Systems Integration Inc., BAE Systems Technology Solutions & Services Inc. and BAE Systems Controls Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$591,256,219	2.3%	Rank history: #10 in FY2021, #8 in FY2022, #8 in FY2023 and #7 in FY2024; unchanged since FY2024.
8	General Dynamics Corporation 15 awardees, including General Dynamics Mission Systems, Inc., Electric Boat Corporation and General Dynamics-Ots, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$468,082,691	1.8%	Rank history: #17 in FY2021, #12 in FY2022, #14 in FY2023 and #10 in FY2024; up 2 since FY2024.
9	Kongsberg Defence & Aerospace AS Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$434,288,219	1.7%	Rank history: not on the FY2021–FY2024 lists; new.
10	Undersea Sensor Systems, Inc. Top agencies Navy (Department of the Navy)	$394,122,792	1.5%	Rank history: not on the FY2021–FY2024 lists; new.
11	Leidos Holdings, Inc. 12 awardees, including Leidos, Inc., Gibbs & Cox Inc. and Leidos Security Detection & Automation, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$348,184,647	1.4%	Rank history: #5 in FY2021, #13 in FY2022, #11 in FY2023 and #15 in FY2024; up 4 since FY2024.
12	General Atomics Aeronautical Systems, Inc. Top agencies USAF (Department of the Air Force)	$309,424,468	1.2%	Rank history: not on the FY2021–FY2023 lists and #45 in FY2024; up 33 since FY2024.
13	Sierra Nevada Company, LLC 2 awardees Top agencies USSOCOM (United States Special Operations Command) Navy (Department of the Navy) Army (Department of the Army)	$303,285,307	1.2%	Rank history: #22 in FY2021, #32 in FY2022, #19 in FY2023 and #19 in FY2024; up 6 since FY2024.
14	Sonova USA Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$242,799,234	0.9%	Rank history: not on the FY2021–FY2024 lists; new.
15	Ultra Electronics Ocean Systems Inc. Top agencies Navy (Department of the Navy) DFAS (Defense Finance and Accounting Service)	$219,336,603	0.9%	Rank history: not on the FY2021–FY2023 lists and #29 in FY2024; up 14 since FY2024.
16	Honeywell International Inc. 19 awardees, including Honeywell Building Solutions GMBH and Honeywell Aerospace International Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$211,704,842	0.8%	Rank history: #27 in FY2021, #21 in FY2022, #15 in FY2023 and #17 in FY2024; up 1 since FY2024.
17	Siemens Corporation 3 awardees, including Siemens Medical Solutions Usa, Inc., Siemens Healthcare Diagnostics Inc. and Varian Medical Systems, Inc. Top agencies VA (Department of Veterans Affairs) DLA (Defense Logistics Agency) HHS (Department of Health and Human Services)	$206,939,392	0.8%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2024; down 3 since FY2024.
18	Anduril Industries Inc. Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force)	$204,316,666	0.8%	Rank history: not on the FY2021 list, #23 in FY2022, #21 in FY2023 and #6 in FY2024; down 12 since FY2024.
19	General Electric Company 4 awardees, including GE Precision Healthcare LLC, GE Healthcare Inc. and GE Medical Systems Information Technologies, Inc. Top agencies VA (Department of Veterans Affairs) DLA (Defense Logistics Agency) HHS (Department of Health and Human Services)	$159,638,059	0.6%	Rank history: #18 in FY2021, #15 in FY2022, #16 in FY2023 and #16 in FY2024; down 3 since FY2024.
20	SRC Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$151,891,311	0.6%	Rank history: #31 in FY2021, #17 in FY2022, #7 in FY2023 and #12 in FY2024; down 8 since FY2024.
21	Science Applications International Corporation Top agencies Navy (Department of the Navy)	$149,505,425	0.6%	Rank history: not on the FY2021–FY2024 lists; new.
22	Philips North America LLC 2 awardees Top agencies VA (Department of Veterans Affairs) DLA (Defense Logistics Agency) DHA (Defense Health Agency)	$144,597,607	0.6%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2024; up 3 since FY2024.
23	Teledyne Technologies Incorporated 17 awardees, including Teledyne Flir Defense, Inc., Teledyne Brown Engineering, Inc. and Teledyne Flir Unmanned Ground Systems, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$112,102,682	0.4%	Rank history: #47 in FY2021, #27 in FY2022, #44 in FY2023 and #40 in FY2024; up 17 since FY2024.
24	Smiths Detection Inc. Top agencies DHS (Department of Homeland Security) AOUSC (Administrative Office of the U.S. Courts) DOJ (Department of Justice)	$108,664,312	0.4%	Rank history: not on the FY2021–FY2023 lists and #24 in FY2024; unchanged since FY2024.
25	Saab Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) Commerce (Department of Commerce)	$105,872,365	0.4%	Rank history: not on the FY2021–FY2022 lists, #33 in FY2023 and #37 in FY2024; up 12 since FY2024.
26	Canadian Commercial Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$98,610,186	0.4%	Rank history: not on the FY2021–FY2023 lists and #20 in FY2024; down 6 since FY2024.
27	TRX Systems, Inc. Top agencies Army (Department of the Army)	$95,387,671	0.4%	Rank history: not on the FY2021–FY2023 lists and #41 in FY2024; up 14 since FY2024.
28	Oticon, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$85,927,725	0.3%	Rank history: #99 in FY2021, not on the FY2022–FY2023 lists and #34 in FY2024; up 6 since FY2024.
29	Abbott Laboratories Inc. 7 awardees, including Alere San Diego, Inc. and Abbott Rapid DX North America LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$84,261,242	0.3%	Rank history: #30 in FY2021, #34 in FY2022, #25 in FY2023 and #36 in FY2024; up 7 since FY2024.
30	Teledyne Flir Defense, LLC 2 awardees Top agencies Army (Department of the Army) DHS (Department of Homeland Security) Navy (Department of the Navy)	$77,121,857	0.3%	Rank history: not on the FY2021–FY2024 lists; up 77 since FY2024.
31	Rapiscan Systems Inc Top agencies DHS (Department of Homeland Security) DOS (Department of State) USAF (Department of the Air Force)	$76,363,433	0.3%	Rank history: not on the FY2021–FY2023 lists and #66 in FY2024; up 35 since FY2024.
32	PPD Development LP 12 awardees, including Life Technologies Corporation, Thermo Electron North America LLC and FEI Company Top agencies DOJ (Department of Justice) HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$76,077,173	0.3%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023 and #31 in FY2024; down 1 since FY2024.
33	Starkey Laboratories Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$74,424,693	0.3%	Rank history: #35 in FY2021, #37 in FY2022, #29 in FY2023 and #38 in FY2024; up 5 since FY2024.
34	Beckman Coulter, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$67,898,175	0.3%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2024; up 22 since FY2024.
35	Huntington Ingalls Industries, Inc. 4 awardees, including HII Unmanned Systems, Inc., Enlighten It Consulting LLC and HII Mission Technologies Corp Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$56,454,134	0.2%	Rank history: not on the FY2021–FY2024 lists; up 320 since FY2024.
36	Management Services Group, Inc. Top agencies Navy (Department of the Navy)	$53,672,634	0.2%	Rank history: #44 in FY2021, #24 in FY2022, #38 in FY2023 and #33 in FY2024; down 3 since FY2024.
37	Sedna Digital Solutions, LLC Top agencies Navy (Department of the Navy)	$51,968,541	0.2%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2023 and #51 in FY2024; up 14 since FY2024.
38	PCI Aviation LLC Top agencies Navy (Department of the Navy)	$51,512,793	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
39	EWA Triad, LLC Top agencies Navy (Department of the Navy)	$51,452,301	0.2%	Rank history: not on the FY2021–FY2023 lists and #94 in FY2024; up 55 since FY2024.
40	Roche Holdings Inc. Through Roche Diagnostics Corporation Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$51,133,476	0.2%	Rank history: not on the FY2021–FY2023 lists and #74 in FY2024; up 34 since FY2024.
41	GN US Holdings Inc Through GN Hearing Care Corporation Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$48,634,461	0.2%	Rank history: not on the FY2021–FY2023 lists and #62 in FY2024; up 21 since FY2024.
42	Elbit Systems of America - Night Vision LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$47,553,739	0.2%	Rank history: not on the FY2021–FY2024 lists; up 119 since FY2024.
43	Teradyne Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$47,180,880	0.2%	Rank history: not on the FY2021 list, #80 in FY2022, #75 in FY2023 and #78 in FY2024; up 35 since FY2024.
44	Government Scientific Source Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) Army (Department of the Army)	$43,827,909	0.2%	Rank history: #42 in FY2021, #42 in FY2022, #30 in FY2023 and #43 in FY2024; down 1 since FY2024.
45	D-2 Incorporated Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$40,920,334	0.2%	Rank history: not on the FY2021–FY2024 lists; up 58 since FY2024.
46	Raytheon Company Top agencies MDA (DOD Missile Defense Agency) USAF (Department of the Air Force)	$38,372,768	0.1%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2024; down 23 since FY2024.
47	Kilgore Flares Company LLC 3 awardees, including Chemring Energetic Devices Inc. and Chemring Sensors and Electronic Systems, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$38,242,715	0.1%	Rank history: not on the FY2021–FY2024 lists; up 187 since FY2024.
48	Widex USA Inc. Through WS Audiology Usa, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$35,949,444	0.1%	Rank history: not on the FY2021–FY2024 lists; up 71 since FY2024.
49	Danaher Corporation 15 awardees, including Cepheid, AB Sciex LLC and Leica Microsystems Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) Commerce (Department of Commerce)	$35,627,306	0.1%	Rank history: #16 in FY2021, #20 in FY2022, #20 in FY2023 and #30 in FY2024; down 19 since FY2024.
50	Echodyne Corp Top agencies DOS (Department of State)	$35,316,332	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
51	Textron Inc. 4 awardees, including Textron Systems Corporation, Bell Textron Inc. and Textron Ground Support Equipment Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DLA (Defense Logistics Agency)	$35,132,662	0.1%	Rank history: #33 in FY2021, #43 in FY2022, #27 in FY2023 and #57 in FY2024; up 6 since FY2024.
52	V2X, Inc. 2 awardees, including Vertex Modernization and Sustainment LLC and V2X Systems LLC Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$35,075,471	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
53	Federal Resources Supply Company, LLC Top agencies Army (Department of the Army) DOS (Department of State) DHS (Department of Homeland Security)	$34,701,786	0.1%	Rank history: #40 in FY2021, #36 in FY2022, not on the FY2023 list and #44 in FY2024; down 9 since FY2024.
54	Agilent Technologies, Inc. 4 awardees Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services) DOJ (Department of Justice)	$34,083,651	0.1%	Rank history: not on the FY2021–FY2023 lists and #61 in FY2024; up 7 since FY2024.
55	Rohde & Schwarz GMBH & Co. KG Through Rohde & Schwarz Usa, Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) Navy (Department of the Navy)	$33,632,109	0.1%	Rank history: #90 in FY2021, #78 in FY2022, #60 in FY2023 and #92 in FY2024; up 37 since FY2024.
56	Design West Technologies Inc. Top agencies Navy (Department of the Navy)	$32,368,113	0.1%	Rank history: #66 in FY2021, #45 in FY2022, #70 in FY2023 and #32 in FY2024; down 24 since FY2024.
57	Total Technology, Inc. Top agencies Army (Department of the Army)	$31,972,108	0.1%	Rank history: not on the FY2021 list, #44 in FY2022 and not on the FY2023–FY2024 lists; up 89 since FY2024.
58	Moog Military Aircraft LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$30,678,345	0.1%	Rank history: not on the FY2021–FY2023 lists and #90 in FY2024; up 32 since FY2024.
59	Ametek Inc. 17 awardees, including Advanced Measurement Technology Inc., Nsi-Mi Technologies Inc. and Spectro Scientific, Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) Army (Department of the Army)	$30,157,908	0.1%	Rank history: #69 in FY2021, #63 in FY2022, #99 in FY2023 and not on the FY2024 list; up 53 since FY2024.
60	Sysmex America Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$30,090,009	0.1%	Rank history: not on the FY2021–FY2023 lists and #97 in FY2024; up 37 since FY2024.
61	Government Marketing and Procurement, LLC Top agencies VA (Department of Veterans Affairs) DOT (Department of Transportation) Treasury (Department of the Treasury)	$29,349,055	0.1%	Rank history: not on the FY2021–FY2024 lists; up 44 since FY2024.
62	Seemann Composites, LLC Top agencies Navy (Department of the Navy)	$29,132,013	0.1%	Rank history: not on the FY2021–FY2023 lists and #87 in FY2024; up 25 since FY2024.
63	The Charles Stark Draper Laboratory, Inc. Top agencies Navy (Department of the Navy)	$28,698,894	0.1%	Rank history: #15 in FY2021, #16 in FY2022, #17 in FY2023 and #26 in FY2024; down 37 since FY2024.
64	THALES 4 awardees, including Advanced Acoustic Concepts, LLC, Thales Usa, Inc. and Thales Defense & Security Inc. Top agencies Navy (Department of the Navy) DOT (Department of Transportation) USAF (Department of the Air Force)	$27,883,842	0.1%	Rank history: not on the FY2021–FY2024 lists; up 63 since FY2024.
65	Innovative Defense Technologies LLC Top agencies Navy (Department of the Navy)	$27,745,007	0.1%	Rank history: not on the FY2021–FY2024 lists; up 57 since FY2024.
66	Caes Systems LLC Top agencies Navy (Department of the Navy)	$27,735,991	0.1%	Rank history: not on the FY2021–FY2024 lists; up 234 since FY2024.
67	Analogic Corp Top agencies DHS (Department of Homeland Security)	$25,836,524	0.1%	Rank history: not on the FY2021–FY2024 lists; up 47 since FY2024.
68	Illumina, Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) Navy (Department of the Navy)	$25,314,184	0.1%	Rank history: #58 in FY2021, #54 in FY2022, #49 in FY2023 and #72 in FY2024; up 4 since FY2024.
69	Scitech Services Inc. Top agencies Army (Department of the Army) DFAS (Defense Finance and Accounting Service)	$25,196,329	0.1%	Rank history: not on the FY2021 list, #86 in FY2022 and not on the FY2023–FY2024 lists; returned.
70	Westinghouse Government Services LLC Top agencies DOE (Department of Energy)	$24,965,577	0.1%	Rank history: not on the FY2021–FY2024 lists; up 173 since FY2024.
71	Systems Engineering Support Co. Top agencies Navy (Department of the Navy)	$24,561,086	0.1%	Rank history: not on the FY2021 list, #99 in FY2022, #95 in FY2023 and not on the FY2024 list; up 78 since FY2024.
72	Srctec, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$24,417,259	0.1%	Rank history: not on the FY2021–FY2023 lists and #52 in FY2024; down 20 since FY2024.
73	Fortive Corporation 4 awardees, including Fluke Electronics Corp, Censis Technologies, Inc. and Advanced Sterilization Products Services Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$23,874,930	0.1%	Rank history: not on the FY2021–FY2023 lists and #80 in FY2024; up 7 since FY2024.
74	Astrophysics Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) DOJ (Department of Justice)	$23,164,305	0.1%	Rank history: #39 in FY2021 and not on the FY2022–FY2024 lists; up 47 since FY2024.
75	Rev-Cap Company, Inc. Top agencies DLA (Defense Logistics Agency)	$21,367,915	0.1%	Rank history: not on the FY2021–FY2024 lists; up 393 since FY2024.
76	Idemia Identity & Security USA LLC Top agencies DHS (Department of Homeland Security)	$21,191,075	0.1%	Rank history: not on the FY2021–FY2023 lists and #96 in FY2024; up 20 since FY2024.
77	Ludlum Measurements, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$21,190,845	0.1%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023 and #73 in FY2024; down 4 since FY2024.
78	Sustainable System Solutions LLC Top agencies Army (Department of the Army)	$21,000,043	0.1%	Rank history: #32 in FY2021, #38 in FY2022, #36 in FY2023 and #67 in FY2024; down 11 since FY2024.
79	Hologic Sales and Service, LLC Top agencies VA (Department of Veterans Affairs) DLA (Defense Logistics Agency) DHA (Defense Health Agency)	$20,882,353	0.1%	Rank history: not on the FY2021–FY2024 lists; up 49 since FY2024.
80	Astronics Test Systems Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$20,812,030	0.1%	Rank history: not on the FY2021–FY2023 lists and #54 in FY2024; down 26 since FY2024.
81	Symetrics Industries, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$20,726,076	0.1%	Rank history: not on the FY2021–FY2024 lists; up 29 since FY2024.
82	Ortho-Clinical Diagnostics Inc. 4 awardees, including Quidelortho Sales Company, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$20,645,467	0.1%	Rank history: not on the FY2021–FY2024 lists; up 80 since FY2024.
83	Saab AB 2 awardees, including Saab Inc. Top agencies DOT (Department of Transportation) Navy (Department of the Navy)	$19,669,771	0.1%	Rank history: #45 in FY2021, #35 in FY2022 and not on the FY2023–FY2024 lists; up 255 since FY2024.
84	Vaisala Inc. Top agencies DOT (Department of Transportation) Commerce (Department of Commerce) USAF (Department of the Air Force)	$19,338,366	0.1%	Rank history: not on the FY2021–FY2023 lists and #75 in FY2024; down 9 since FY2024.
85	Elbit Systems of America LLC 2 awardees, including Elbitamerica, Inc. and Universal Avionics Systems Corp Top agencies Army (Department of the Army) DHS (Department of Homeland Security) Navy (Department of the Navy)	$18,907,821	0.1%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2024; down 50 since FY2024.
86	Olympus America Inc. Top agencies VA (Department of Veterans Affairs) DLA (Defense Logistics Agency)	$18,424,642	0.1%	Rank history: not on the FY2021–FY2024 lists; up 58 since FY2024.
87	Amentum Holdings, Inc. 3 awardees, including The Keyw Corporation, Amentum Services, Inc. and Amentum Technology, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$18,344,777	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
88	Mountain Horse LLC Top agencies Army (Department of the Army) DFAS (Defense Finance and Accounting Service) Navy (Department of the Navy)	$17,996,147	0.1%	Rank history: #88 in FY2021, #51 in FY2022, #46 in FY2023 and #48 in FY2024; down 40 since FY2024.
89	Kratos Defense & Security Solutions Inc. 3 awardees, including Micro Systems, Inc. and Caes Mission Systems LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$17,663,426	0.1%	Rank history: not on the FY2021–FY2024 lists; up 146 since FY2024.
90	OEC Medical Systems, Inc. Top agencies VA (Department of Veterans Affairs)	$17,050,155	0.1%	Rank history: not on the FY2021–FY2024 lists; up 34 since FY2024.
91	Hensoldt Inc. Top agencies Navy (Department of the Navy)	$16,931,828	0.1%	Rank history: not on the FY2021–FY2024 lists; up 116 since FY2024.
92	Norotos, Inc. Top agencies Army (Department of the Army)	$16,463,173	0.1%	Rank history: not on the FY2021–FY2024 lists; up 31 since FY2024.
93	Sechan Electronics Inc. Top agencies Navy (Department of the Navy)	$16,199,159	0.1%	Rank history: #65 in FY2021, not on the FY2022 list, #62 in FY2023 and #83 in FY2024; down 10 since FY2024.
94	Safran Defense & Space, Inc. Top agencies Army (Department of the Army)	$15,931,938	0.1%	Rank history: not on the FY2021–FY2023 lists and #55 in FY2024; down 39 since FY2024.
95	Thales Usa, Inc. Top agencies Navy (Department of the Navy) DOT (Department of Transportation) USAF (Department of the Air Force)	$15,595,565	0.1%	Rank history: not on the FY2021–FY2024 lists; up 43 since FY2024.
96	Fisher Bioservices Inc. Top agencies Navy (Department of the Navy)	$15,595,127	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
97	Accelint Global Inc. Top agencies Navy (Department of the Navy)	$14,951,301	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
98	Printed Circuits Corp. Top agencies USAF (Department of the Air Force)	$14,860,034	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
99	Keystone Mission Solutions Corp Top agencies USAF (Department of the Air Force)	$14,850,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
100	Scioteq LLC 16 awardees, including Armtec Countermeasures Co, Aerosonic LLC and Tactair Fluid Controls Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$14,391,098	0.1%	Rank history: not on the FY2021–FY2023 lists and #89 in FY2024; down 11 since FY2024.

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100 of 4,071 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 3345

Code	Net obligations	Largest contractor
33451 Navigational, Measuring, Electromedical, and Control Instruments Manufacturing	$24,859,767,155	RTX Corporation

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 $25.7 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 3345 contractors in FY2025?

1. RTX Corporation ($8.21B), 2. Lockheed Martin Corporation ($3.23B), 3. Northrop Grumman Corporation ($1.53B), 4. The Boeing Company ($851M), 5. L3Harris Technologies, Inc. ($759M), 6. Leonardo S.p.A. ($744M), 7. BAE Systems ($591M), 8. General Dynamics Corporation ($468M), 9. Kongsberg Defence & Aerospace AS ($434M), 10. Undersea Sensor Systems, Inc. ($394M).

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