Top 100 Contractors in NAICS 33451: Navigational, Measuring, Electromedical, and Control Instruments Manufacturing, FY2024

Name: Top 100 Contractors in NAICS 33451: Navigational, Measuring, Electromedical, and Control Instruments Manufacturing, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 63% of FY2024 NAICS 33451 contract dollars

Contract obligations: $24,145,651,653 Net of deobligations, by contracts coded NAICS 33451 or a code under it
Contractors: 4,774 Parent companies with an obligation
Largest contractor: RTX Corporation $6.68 billion, 26.3% 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 69 awardees, including Raytheon Company, Rockwell Collins, Inc. and Goodrich Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$6,680,526,728	26.3%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2025; unchanged since FY2023.
2	Lockheed Martin Corporation 21 awardees Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$4,519,627,161	17.8%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and #2 in FY2025; unchanged since FY2023.
3	Northrop Grumman Corporation 33 awardees, including Northrop Grumman Systems Corporation Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$1,529,055,285	6.0%	Rank history: #3 in FY2021, #3 in FY2022, #3 in FY2023 and #3 in FY2025; unchanged since FY2023.
4	The Boeing Company 22 awardees, including Argon ST, Inc., Boeing Distribution, Inc. and Jeppesen Foreflight, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$704,487,048	2.8%	Rank history: #12 in FY2021, #11 in FY2022, #4 in FY2023 and #4 in FY2025; unchanged since FY2023.
5	Leonardo S.p.A. 14 awardees, including Laurel Technologies Partnership, DRS Network & Imaging Systems LLC and DRS Sustainment Systems, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$593,327,072	2.3%	Rank history: #7 in FY2021, #6 in FY2022, #6 in FY2023 and #6 in FY2025; up 1 since FY2023.
6	Anduril Industries Inc. Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force) Navy (Department of the Navy)	$502,651,155	2.0%	Rank history: not on the FY2021 list, #23 in FY2022, #21 in FY2023 and #18 in FY2025; up 15 since FY2023.
7	BAE Systems 22 awardees, including BAE Systems Information and Electronic Systems Integration Inc., BAE Systems Technology Solutions & Services Inc. and BAE Systems (Operations) Limited Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$442,334,981	1.7%	Rank history: #10 in FY2021, #8 in FY2022, #8 in FY2023 and #7 in FY2025; up 1 since FY2023.
8	L3Harris Technologies, Inc. 39 awardees, including L3 Technologies, Inc., L3Harris Interstate Electronics Corporation and Acron Aviation, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$370,570,532	1.5%	Rank history: #4 in FY2021, #4 in FY2022, #5 in FY2023 and #5 in FY2025; down 3 since FY2023.
9	Northrop Grumman Systems Corporation 3 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$326,593,901	1.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
10	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) DHS (Department of Homeland Security) Army (Department of the Army)	$317,272,128	1.2%	Rank history: #17 in FY2021, #12 in FY2022, #14 in FY2023 and #8 in FY2025; up 4 since FY2023.
11	Sonova Holding AG 2 awardees, including Sonova USA Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$280,293,734	1.1%	Rank history: #14 in FY2021, #14 in FY2022, #13 in FY2023 and not on the FY2025 list; up 2 since FY2023.
12	SRC Inc. 2 awardees, including Srctec, LLC Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$273,975,641	1.1%	Rank history: #31 in FY2021, #17 in FY2022, #7 in FY2023 and #20 in FY2025; down 5 since FY2023.
13	General Atomic Technologies Corporation 2 awardees, including General Atomics Aeronautical Systems, Inc. and General Atomics Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$232,765,762	0.9%	Rank history: #9 in FY2021, #9 in FY2022, #12 in FY2023 and not on the FY2025 list; down 1 since FY2023.
14	Siemens Corporation 4 awardees, including Siemens Medical Solutions Usa, Inc., Varian Medical Systems, Inc. and Siemens Healthcare Diagnostics Inc. Top agencies VA (Department of Veterans Affairs) DLA (Defense Logistics Agency) HHS (Department of Health and Human Services)	$232,637,741	0.9%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2025; new.
15	Leidos Holdings, Inc. 12 awardees, including Leidos, Inc. and Gibbs & Cox Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$217,988,239	0.9%	Rank history: #5 in FY2021, #13 in FY2022, #11 in FY2023 and #11 in FY2025; down 4 since FY2023.
16	General Electric Company 14 awardees, including GE Precision Healthcare LLC, OEC Medical Systems, Inc. and Druck, LLC Top agencies VA (Department of Veterans Affairs) DLA (Defense Logistics Agency) DOJ (Department of Justice)	$203,236,550	0.8%	Rank history: #18 in FY2021, #15 in FY2022, #16 in FY2023 and #19 in FY2025; unchanged since FY2023.
17	Honeywell International Inc. 35 awardees, including Honeywell Building Solutions GMBH Top agencies Army (Department of the Army) WHS (DOD Washington Headquarters Service) Navy (Department of the Navy)	$196,145,317	0.8%	Rank history: #27 in FY2021, #21 in FY2022, #15 in FY2023 and #16 in FY2025; down 2 since FY2023.
18	Science Applications International Corporation 3 awardees, including Asrc Federal Facilities Logistics, LLC Top agencies Navy (Department of the Navy) Commerce (Department of Commerce) DLA (Defense Logistics Agency)	$186,168,973	0.7%	Rank history: #50 in FY2021, #18 in FY2022, #23 in FY2023 and not on the FY2025 list; up 5 since FY2023.
19	Sierra Nevada Company, LLC 4 awardees Top agencies Navy (Department of the Navy) USSOCOM (United States Special Operations Command) Army (Department of the Army)	$166,449,757	0.7%	Rank history: #22 in FY2021, #32 in FY2022, #19 in FY2023 and #13 in FY2025; unchanged since FY2023.
20	Canadian Commercial Corporation Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$136,894,598	0.5%	Rank history: not on the FY2021–FY2023 lists and #26 in FY2025; new.
21	BAE Systems Information and Electronic Systems Integration Inc. 3 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$133,159,956	0.5%	Rank history: not on the FY2021 list, #77 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
22	General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy)	$133,102,696	0.5%	Rank history: #34 in FY2021, #25 in FY2022, #31 in FY2023 and not on the FY2025 list; up 9 since FY2023.
23	Raytheon Company Top agencies MDA (DOD Missile Defense Agency) USAF (Department of the Air Force)	$125,885,409	0.5%	Rank history: not on the FY2021–FY2023 lists and #46 in FY2025; new.
24	Smiths Detection, Inc. 2 awardees Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) AOUSC (Administrative Office of the U.S. Courts)	$123,715,506	0.5%	Rank history: not on the FY2021–FY2023 lists and #24 in FY2025; new.
25	Philips North America LLC 2 awardees Top agencies VA (Department of Veterans Affairs) DLA (Defense Logistics Agency) HHS (Department of Health and Human Services)	$119,324,124	0.5%	Rank history: not on the FY2021–FY2023 lists and #22 in FY2025; new.
26	The Charles Stark Draper Laboratory, Inc. Top agencies Navy (Department of the Navy)	$117,347,516	0.5%	Rank history: #15 in FY2021, #16 in FY2022, #17 in FY2023 and #63 in FY2025; down 9 since FY2023.
27	Elbit Systems Ltd 5 awardees, including Sparton Deleon Springs, LLC, Elbitamerica, Inc. and Elbit Systems of America - Night Vision LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$112,421,554	0.4%	Rank history: #55 in FY2021, #66 in FY2022, #91 in FY2023 and not on the FY2025 list; up 64 since FY2023.
28	L3HARRIS Aviation Products Inc 23 awardees, including L3 Technologies, Inc., L3Harris Interstate Electronics Corporation and L3Harris Technologies, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$105,603,550	0.4%	Rank history: not on the FY2021–FY2022 lists, #32 in FY2023 and not on the FY2025 list; up 4 since FY2023.
29	Ultra Electronics Ocean Systems Inc. 2 awardees Top agencies Navy (Department of the Navy)	$93,603,434	0.4%	Rank history: not on the FY2021–FY2023 lists and #15 in FY2025; new.
30	Danaher Corporation 29 awardees, including Beckman Coulter, Inc., Cepheid and AB Sciex LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) Commerce (Department of Commerce)	$82,928,623	0.3%	Rank history: #16 in FY2021, #20 in FY2022, #20 in FY2023 and #49 in FY2025; down 10 since FY2023.
31	PPD Development LP 14 awardees, including Life Technologies Corporation, FEI Company and Thermo Electron North America LLC Top agencies DOJ (Department of Justice) Commerce (Department of Commerce) HHS (Department of Health and Human Services)	$81,811,470	0.3%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023 and #32 in FY2025; up 45 since FY2023.
32	Design West Technologies Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$81,492,756	0.3%	Rank history: #66 in FY2021, #45 in FY2022, #70 in FY2023 and #56 in FY2025; up 38 since FY2023.
33	Management Services Group, Inc. Top agencies Navy (Department of the Navy)	$79,938,792	0.3%	Rank history: #44 in FY2021, #24 in FY2022, #38 in FY2023 and #36 in FY2025; up 5 since FY2023.
34	Oticon, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$79,559,452	0.3%	Rank history: #99 in FY2021, not on the FY2022–FY2023 lists and #28 in FY2025; returned.
35	Elbit Systems of America LLC 2 awardees, including Elbitamerica, Inc. and Universal Avionics Systems Corp Top agencies USAF (Department of the Air Force) Army (Department of the Army) DHS (Department of Homeland Security)	$79,077,402	0.3%	Rank history: not on the FY2021–FY2023 lists and #85 in FY2025; new.
36	Abbott Laboratories 11 awardees, including Abbott Molecular Inc., Abbott Rapid Diagnostics Informatics, Inc. and Alere San Diego, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$78,015,454	0.3%	Rank history: #30 in FY2021, #34 in FY2022, #25 in FY2023 and #29 in FY2025; down 11 since FY2023.
37	Saab Inc. 3 awardees Top agencies Navy (Department of the Navy)	$73,410,858	0.3%	Rank history: not on the FY2021–FY2022 lists, #33 in FY2023 and #25 in FY2025; down 4 since FY2023.
38	Starkey Laboratories Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$69,386,823	0.3%	Rank history: #35 in FY2021, #37 in FY2022, #29 in FY2023 and #33 in FY2025; down 9 since FY2023.
39	Siemens Aktiengesellschaft 5 awardees, including Siemens Medical Solutions Usa, Inc., Siemens Healthcare Diagnostics Inc. and Siemens Government Technologies Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$64,246,418	0.3%	Rank history: #11 in FY2021, #10 in FY2022, #10 in FY2023 and not on the FY2025 list; down 29 since FY2023.
40	Teledyne Technologies Incorporated 21 awardees, including Teledyne Flir Defense, Inc., Teledyne Flir Unmanned Ground Systems, Inc. and Teledyne Brown Engineering, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$64,165,303	0.3%	Rank history: #47 in FY2021, #27 in FY2022, #44 in FY2023 and #23 in FY2025; up 4 since FY2023.
41	TRX Systems, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$63,991,853	0.3%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2025; new.
42	Koninklijke Philips N.V. 4 awardees, including Philips North America LLC, Philips Healthcare Informatics Inc. and Cardionet, LLC Top agencies VA (Department of Veterans Affairs) DLA (Defense Logistics Agency) Army (Department of the Army)	$61,318,884	0.2%	Rank history: #19 in FY2021, #19 in FY2022, #18 in FY2023 and not on the FY2025 list; down 24 since FY2023.
43	Government Scientific Source Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Army (Department of the Army)	$55,929,908	0.2%	Rank history: #42 in FY2021, #42 in FY2022, #30 in FY2023 and #44 in FY2025; down 13 since FY2023.
44	Federal Resources Supply Company, LLC Top agencies DOS (Department of State) Army (Department of the Army) DLA (Defense Logistics Agency)	$55,482,992	0.2%	Rank history: #40 in FY2021, #36 in FY2022, not on the FY2023 list and #53 in FY2025; returned.
45	General Atomics Aeronautical Systems, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$55,416,719	0.2%	Rank history: not on the FY2021–FY2023 lists and #12 in FY2025; new.
46	HII Unmanned Systems, Inc. Top agencies Navy (Department of the Navy) DOI (Department of the Interior)	$49,722,597	0.2%	Rank history: #63 in FY2021, #79 in FY2022, #74 in FY2023 and not on the FY2025 list; up 28 since FY2023.
47	Renk Systems Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$49,056,684	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
48	Mountain Horse LLC 2 awardees Top agencies Army (Department of the Army) DFAS (Defense Finance and Accounting Service) DHS (Department of Homeland Security)	$48,914,250	0.2%	Rank history: #88 in FY2021, #51 in FY2022, #46 in FY2023 and #88 in FY2025; down 2 since FY2023.
49	Leidos Security Detection & Automation, Inc. Top agencies DHS (Department of Homeland Security)	$45,641,884	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
50	Trillamed LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration)	$44,533,102	0.2%	Rank history: #84 in FY2021, #39 in FY2022, #68 in FY2023 and not on the FY2025 list; up 18 since FY2023.
51	Sedna Digital Solutions, LLC Top agencies Navy (Department of the Navy)	$44,436,898	0.2%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2023 and #37 in FY2025; up 7 since FY2023.
52	Srctec, LLC Top agencies Army (Department of the Army)	$42,231,875	0.2%	Rank history: not on the FY2021–FY2023 lists and #72 in FY2025; new.
53	Tevet LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$41,217,283	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
54	Astronics Test Systems Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$39,779,885	0.2%	Rank history: not on the FY2021–FY2023 lists and #80 in FY2025; new.
55	Safran Defense & Space, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$38,201,342	0.2%	Rank history: not on the FY2021–FY2023 lists and #94 in FY2025; new.
56	Beckman Coulter, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$37,804,863	0.1%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2025; new.
57	Textron Inc. 4 awardees, including Textron Systems Corporation, Textron Aviation Inc. and Textron Ground Support Equipment Inc. Top agencies Navy (Department of the Navy) USDA (Department of Agriculture) DLA (Defense Logistics Agency)	$36,983,323	0.1%	Rank history: #33 in FY2021, #43 in FY2022, #27 in FY2023 and #51 in FY2025; down 30 since FY2023.
58	Cobham Mission Systems Orchard Park Inc. 5 awardees, including Caes Systems LLC, Chelton Avionics, Inc. and Everaxis AB Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DOT (Department of Transportation)	$35,882,407	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 128 since FY2023.
59	Dynetics, Inc. Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$35,731,891	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
60	Scientific Research Corporation Top agencies Navy (Department of the Navy) DFAS (Defense Finance and Accounting Service)	$35,567,012	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
61	Agilent Technologies, Inc. 5 awardees, including Agilent Technologies Deutschland GMBH Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) DOJ (Department of Justice)	$33,322,878	0.1%	Rank history: not on the FY2021–FY2023 lists and #54 in FY2025; new.
62	GN US Holdings Inc Through GN Hearing Care Corporation Top agencies VA (Department of Veterans Affairs)	$32,087,558	0.1%	Rank history: not on the FY2021–FY2023 lists and #41 in FY2025; new.
63	Emerson Electric Co 7 awardees, including National Instruments Corp, Emerson Process Management Power & Water Solutions, Inc. and BTE Technologies, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$30,296,105	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
64	Roche Holding AG 2 awardees, including Roche Diagnostics Corporation Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Army (Department of the Army)	$29,363,709	0.1%	Rank history: #37 in FY2021, #28 in FY2022, #35 in FY2023 and not on the FY2025 list; down 29 since FY2023.
65	Analogic Corporation 2 awardees, including BK Medical Holding Company, Inc. Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$28,301,660	0.1%	Rank history: #28 in FY2021, #33 in FY2022, #66 in FY2023 and not on the FY2025 list; up 1 since FY2023.
66	Rapiscan Systems Inc Top agencies DHS (Department of Homeland Security) DOS (Department of State) DOD (Department of Defense)	$28,177,091	0.1%	Rank history: not on the FY2021–FY2023 lists and #31 in FY2025; new.
67	Sustainable System Solutions LLC Top agencies Army (Department of the Army)	$28,025,320	0.1%	Rank history: #32 in FY2021, #38 in FY2022, #36 in FY2023 and #78 in FY2025; down 31 since FY2023.
68	Leidos, Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) USAF (Department of the Air Force)	$27,884,446	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
69	Scientific Applications & Research Associates, Inc. Top agencies USAF (Department of the Air Force)	$27,727,124	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
70	Advanced Technology Systems Company, Inc. (OF Virginia) Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$27,502,825	0.1%	Rank history: #54 in FY2021, #56 in FY2022, #80 in FY2023 and not on the FY2025 list; up 10 since FY2023.
71	MSI Defense Solutions LLC Top agencies Navy (Department of the Navy)	$27,060,660	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
72	Illumina, Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) USUHS (DOD Uniformed Services University of the Health Sciences)	$26,545,492	0.1%	Rank history: #58 in FY2021, #54 in FY2022, #49 in FY2023 and #68 in FY2025; down 23 since FY2023.
73	Ludlum Measurements, Inc. Top agencies Army (Department of the Army)	$26,350,946	0.1%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023 and #77 in FY2025; up 8 since FY2023.
74	Roche Holdings Inc. Through Roche Diagnostics Corporation Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) USAF (Department of the Air Force)	$26,169,408	0.1%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2025; new.
75	Vaisala Inc. Top agencies Commerce (Department of Commerce) DOT (Department of Transportation) USAF (Department of the Air Force)	$25,557,325	0.1%	Rank history: not on the FY2021–FY2023 lists and #84 in FY2025; new.
76	Keysight Technologies, Inc. 3 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$24,544,032	0.1%	Rank history: #97 in FY2021, #100 in FY2022, #65 in FY2023 and not on the FY2025 list; down 11 since FY2023.
77	Pendar Technologies LLC Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) Army (Department of the Army)	$23,621,183	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
78	Teradyne Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$22,899,001	0.1%	Rank history: not on the FY2021 list, #80 in FY2022, #75 in FY2023 and #43 in FY2025; down 3 since FY2023.
79	GN Store Nord A/S Through GN Hearing Care Corporation Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$22,693,563	0.1%	Rank history: #49 in FY2021, #52 in FY2022, #43 in FY2023 and not on the FY2025 list; down 36 since FY2023.
80	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) Commerce (Department of Commerce)	$22,548,395	0.1%	Rank history: not on the FY2021–FY2023 lists and #73 in FY2025; new.
81	Videoray LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$22,319,912	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	William Demants OG Hustru IDA Emilies (MILLAS) Fond - Kaldet 2 awardees, including Oticon, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$22,193,251	0.1%	Rank history: #57 in FY2021, #40 in FY2022, #26 in FY2023 and not on the FY2025 list; down 56 since FY2023.
83	Sechan Electronics Inc. Top agencies Navy (Department of the Navy)	$21,857,344	0.1%	Rank history: #65 in FY2021, not on the FY2022 list, #62 in FY2023 and #93 in FY2025; down 21 since FY2023.
84	Logisys Technical Services Inc. Top agencies Army (Department of the Army)	$20,588,050	0.1%	Rank history: not on the FY2021 list, #96 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
85	Laurel Technologies Partnership Top agencies Navy (Department of the Navy)	$20,235,599	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
86	Flir Systems Inc. 5 awardees, including Teledyne Flir Defense, Inc., Teledyne Flir Unmanned Ground Systems, Inc. and Teledyne Flir Commercial Systems Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DOE (Department of Energy)	$19,788,903	0.1%	Rank history: #21 in FY2021, #59 in FY2022, #42 in FY2023 and not on the FY2025 list; down 44 since FY2023.
87	Seemann Composites, LLC Top agencies Navy (Department of the Navy)	$19,689,606	0.1%	Rank history: not on the FY2021–FY2023 lists and #62 in FY2025; new.
88	Transaero, Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$19,325,534	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 44 since FY2023.
89	Scioteq LLC 13 awardees, including Armtec Countermeasures Co, Teac Aerospace Technologies, Inc. and Aerosonic LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$19,300,410	0.1%	Rank history: not on the FY2021–FY2023 lists and #100 in FY2025; new.
90	Moog Military Aircraft LLC Top agencies Army (Department of the Army)	$19,116,588	0.1%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2025; new.
91	Bruker Corporation 3 awardees, including Bruker Biospin Corp, Bruker Scientific LLC and Bruker Nano, Inc. Top agencies HHS (Department of Health and Human Services) Commerce (Department of Commerce) NASA (National Aeronautics and Space Administration)	$18,609,876	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
92	Rohde & Schwarz GMBH & Co. KG Through Rohde & Schwarz Usa, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$18,580,383	0.1%	Rank history: #90 in FY2021, #78 in FY2022, #60 in FY2023 and #55 in FY2025; down 32 since FY2023.
93	Tyonek Aircraft Overhaul, LLC Top agencies DHS (Department of Homeland Security)	$18,387,932	0.1%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2023 and not on the FY2025 list; down 29 since FY2023.
94	EWA Triad, LLC Top agencies Navy (Department of the Navy)	$18,263,073	0.1%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2025; new.
95	United Terex, Inc. Top agencies Navy (Department of the Navy)	$17,412,502	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 76 since FY2023.
96	Idemia Identity & Security USA LLC Top agencies DHS (Department of Homeland Security)	$16,862,089	0.1%	Rank history: not on the FY2021–FY2023 lists and #76 in FY2025; new.
97	Sysmex America Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$16,176,650	0.1%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2025; new.
98	Franklin Young International, Incorporated Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$16,164,478	0.1%	Rank history: not on the FY2021 list, #76 in FY2022, #93 in FY2023 and not on the FY2025 list; down 5 since FY2023.
99	Ultra Electronics Forensic Technology Inc 9 awardees, including Ultra Electronics Ocean Systems Inc., Undersea Sensor Systems, Inc. and Caes Mission Systems LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$16,044,562	0.1%	Rank history: #24 in FY2021, #31 in FY2022, #22 in FY2023 and not on the FY2025 list; down 77 since FY2023.
100	Pacific Defense Strategies, Inc. Top agencies Navy (Department of the Navy)	$15,907,056	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.

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100 of 4,774 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 33451

Code	Net obligations	Largest contractor
334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$19,777,492,366	RTX Corporation
334516 Analytical Laboratory Instrument Manufacturing	$1,083,403,883	PPD Development LP
334517 Irradiation Apparatus Manufacturing	$892,295,964	Siemens Corporation
334510 Electromedical and Electrotherapeutic Apparatus Manufacturing	$827,622,193	Sonova Holding AG
334519 Other Measuring and Controlling Device Manufacturing	$716,387,324	Design West Technologies Inc.
334515 Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals	$501,841,515	Lockheed Martin Corporation
334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables	$242,923,461	Renk Systems Corporation
334512 Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use	$52,418,640	Signet Technologies, Inc.
334514 Totalizing Fluid Meter and Counting Device Manufacturing	$51,266,308	Lockheed Martin 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 $25.4 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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 33451 contractors in FY2024?

1. RTX Corporation ($6.68B), 2. Lockheed Martin Corporation ($4.52B), 3. Northrop Grumman Corporation ($1.53B), 4. The Boeing Company ($704M), 5. Leonardo S.p.A. ($593M), 6. Anduril Industries Inc. ($503M), 7. BAE Systems ($442M), 8. L3Harris Technologies, Inc. ($371M), 9. Northrop Grumman Systems Corporation ($327M), 10. General Dynamics Corporation ($317M).

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