Top 100 Contractors in NAICS 334515: Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals, FY2024

Name: Top 100 Contractors in NAICS 334515: Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals, FY2024
Creator: GovTribe

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

The top 10 won 49% of FY2024 NAICS 334515 contract dollars

Contract obligations: $501,841,515 Net of deobligations, by contracts coded NAICS 334515
Contractors: 785 Parent companies with an obligation
Largest contractor: Lockheed Martin Corporation $52.3 million, 9.9% 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	Lockheed Martin Corporation 5 awardees Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$52,299,684	9.9%	Rank history: not on the FY2021 list, #7 in FY2022, #17 in FY2023 and #45 in FY2025; up 16 since FY2023.
2	Tevet LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$40,382,540	7.6%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2025; new.
3	Astronics Test Systems Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DHS (Department of Homeland Security)	$39,556,402	7.5%	Rank history: not on the FY2021–FY2023 lists and #6 in FY2025; new.
4	Emerson Electric Co 2 awardees, including National Instruments Corp Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$26,489,263	5.0%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2025; new.
5	Teradyne Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$22,899,001	4.3%	Rank history: #7 in FY2021, #6 in FY2022, #3 in FY2023 and #2 in FY2025; down 2 since FY2023.
6	Logisys Technical Services Inc. Top agencies Army (Department of the Army)	$20,588,050	3.9%	Rank history: not on the FY2021 list, #8 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
7	Northrop Grumman Corporation 7 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$14,941,019	2.8%	Rank history: #4 in FY2021, #3 in FY2022, #4 in FY2023 and #10 in FY2025; down 3 since FY2023.
8	Innovative Defense Technologies LLC 2 awardees Top agencies Navy (Department of the Navy)	$14,838,996	2.8%	Rank history: not on the FY2021–FY2022 lists, #18 in FY2023 and #5 in FY2025; up 10 since FY2023.
9	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)	$14,072,217	2.7%	Rank history: #5 in FY2021, #5 in FY2022, #2 in FY2023 and #14 in FY2025; down 7 since FY2023.
10	The Boeing Company 3 awardees Top agencies Army (Department of the Army) Navy (Department of the Navy)	$13,668,781	2.6%	Rank history: #1 in FY2021, not on the FY2022 list, #1 in FY2023 and #9 in FY2025; down 9 since FY2023.
11	Fortive Corporation Through Fluke Electronics Corp Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DHA (Defense Health Agency)	$12,183,403	2.3%	Rank history: not on the FY2021–FY2023 lists and #8 in FY2025; new.
12	Keysight Technologies, Inc. 3 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$11,819,412	2.2%	Rank history: #6 in FY2021, #10 in FY2022, #6 in FY2023 and #15 in FY2025; down 6 since FY2023.
13	Serco Inc Top agencies Navy (Department of the Navy)	$9,967,042	1.9%	Rank history: not on the FY2021–FY2022 lists, #42 in FY2023 and #34 in FY2025; up 29 since FY2023.
14	Total Technology, Inc. Top agencies Army (Department of the Army)	$9,589,402	1.8%	Rank history: not on the FY2021 list, #1 in FY2022, #12 in FY2023 and #4 in FY2025; down 2 since FY2023.
15	General Dynamics Corporation 2 awardees, including General Dynamics Mission Systems, Inc. and Electric Boat Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$8,453,557	1.6%	Rank history: not on the FY2021–FY2022 lists, #11 in FY2023 and #7 in FY2025; down 4 since FY2023.
16	Leonardo S.p.A. 2 awardees, including DRS Network & Imaging Systems LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$8,215,120	1.6%	Rank history: #2 in FY2021, #4 in FY2022, #14 in FY2023 and #40 in FY2025; down 2 since FY2023.
17	Airbus DS Military Aircraft Inc. 2 awardees, including Astronics Test Systems Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$8,053,973	1.5%	Rank history: not on the FY2021–FY2022 lists, #8 in FY2023 and not on the FY2025 list; down 9 since FY2023.
18	Kitco Fiber Optics Inc Top agencies Army (Department of the Army)	$7,151,595	1.4%	Rank history: not on the FY2021–FY2022 lists, #25 in FY2023 and not on the FY2025 list; up 7 since FY2023.
19	Career Crusher LLC Top agencies Navy (Department of the Navy)	$6,942,591	1.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
20	L3Harris Technologies, Inc. 5 awardees, including L3 Technologies Inc. and Acron Aviation, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$6,584,056	1.2%	Rank history: #9 in FY2021, #15 in FY2022, #21 in FY2023 and #27 in FY2025; up 1 since FY2023.
21	Air Logistics and Engineering Solutions, LLC Top agencies USAF (Department of the Air Force)	$5,600,857	1.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
22	Technical Communities, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) DOT (Department of Transportation)	$5,245,459	1.0%	Rank history: #11 in FY2021, #13 in FY2022, not on the FY2023 list and #12 in FY2025; returned.
23	Testek LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$4,909,082	0.9%	Rank history: not on the FY2021 list, #47 in FY2022, #5 in FY2023 and #19 in FY2025; down 18 since FY2023.
24	Chant Engineering Co Inc. Top agencies Navy (Department of the Navy)	$4,589,840	0.9%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
25	Safety Technology Holdings Inc. Through Humanetics Innovative Solutions, Inc. Top agencies DOT (Department of Transportation) Army (Department of the Army)	$4,009,069	0.8%	Rank history: not on the FY2021–FY2023 lists and #21 in FY2025; new.
26	R. S. Means Company LLC 5 awardees, including Fluke Electronics Corp, Tektronix, Inc. and Advanced Sterilization Products Espana SL. Top agencies Navy (Department of the Navy) Army (Department of the Army) Commerce (Department of Commerce)	$3,953,214	0.7%	Rank history: #16 in FY2021, #12 in FY2022, #10 in FY2023 and not on the FY2025 list; down 16 since FY2023.
27	Silvus Technologies Inc. Through Crfs, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$3,365,559	0.6%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2023 and #24 in FY2025; down 4 since FY2023.
28	BAE Systems 2 awardees, including BAE Systems Information and Electronic Systems Integration Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$3,295,357	0.6%	Rank history: #10 in FY2021, #48 in FY2022, #53 in FY2023 and #11 in FY2025; up 25 since FY2023.
29	Caron East, Inc. Top agencies USDA (Department of Agriculture) Navy (Department of the Navy) DOI (Department of the Interior)	$2,505,126	0.5%	Rank history: #29 in FY2021, #37 in FY2022, #27 in FY2023 and #64 in FY2025; down 2 since FY2023.
30	International Television Corp Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) DOT (Department of Transportation)	$2,249,723	0.4%	Rank history: #27 in FY2021, #28 in FY2022, #20 in FY2023 and #46 in FY2025; down 10 since FY2023.
31	Ametek Inc. 5 awardees, including Ametek Programmable Power, Inc., Nsi-Mi Technologies Inc. and Amplifier Research Corp Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$2,208,447	0.4%	Rank history: #89 in FY2021, #30 in FY2022, #51 in FY2023 and #13 in FY2025; up 20 since FY2023.
32	Compass Instruments Inc. Top agencies Army (Department of the Army)	$2,131,138	0.4%	Rank history: not on the FY2021 list, #20 in FY2022, #35 in FY2023 and not on the FY2025 list; up 3 since FY2023.
33	Kitco LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,101,743	0.4%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2023 and not on the FY2025 list; up 6 since FY2023.
34	Fotronic Corporation Top agencies Navy (Department of the Navy) FCC (Federal Communications Commission) DLA (Defense Logistics Agency)	$1,979,507	0.4%	Rank history: #42 in FY2021, #46 in FY2022, #45 in FY2023 and #41 in FY2025; up 11 since FY2023.
35	Advanced Testing Technologies Inc. Top agencies USAF (Department of the Air Force)	$1,977,781	0.4%	Rank history: #19 in FY2021, #19 in FY2022, #43 in FY2023 and #35 in FY2025; up 8 since FY2023.
36	Ets-Lindgren Inc. Top agencies Army (Department of the Army)	$1,779,000	0.3%	Rank history: not on the FY2021–FY2023 lists and #31 in FY2025; new.
37	Esco Technologies Inc. 2 awardees, including Doble Engineering Company and Ets-Lindgren Inc. Top agencies DOI (Department of the Interior) DOE (Department of Energy) Army (Department of the Army)	$1,720,395	0.3%	Rank history: #36 in FY2021, #35 in FY2022, #19 in FY2023 and #44 in FY2025; down 18 since FY2023.
38	Tyonek Native Corporatio 2 awardees, including Tyonek Machining and Fabrication, LLC and Tyonek Engineering & Agile Manufacturing LLC Top agencies USAF (Department of the Air Force)	$1,660,874	0.3%	Rank history: #34 in FY2021, #27 in FY2022, #33 in FY2023 and not on the FY2025 list; down 5 since FY2023.
39	Calista Corp Through Yulista Aviation, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$1,659,999	0.3%	Rank history: not on the FY2021 list, #9 in FY2022, #16 in FY2023 and not on the FY2025 list; down 23 since FY2023.
40	Space Electronics, LLC Top agencies USAF (Department of the Air Force)	$1,514,697	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
41	Delta Sigma, LLC Top agencies WHS (DOD Washington Headquarters Service)	$1,495,458	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
42	Itegrity Inc Top agencies Commerce (Department of Commerce)	$1,422,858	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
43	Waygate Technologies USA LP Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,413,088	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
44	Atlantic Diving Supply, Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$1,396,860	0.3%	Rank history: not on the FY2021–FY2023 lists and #28 in FY2025; new.
45	Testforce Usa, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$1,293,147	0.2%	Rank history: #83 in FY2021, #44 in FY2022, #69 in FY2023 and #29 in FY2025; up 24 since FY2023.
46	Honeywell International Inc. Top agencies Army (Department of the Army)	$1,239,520	0.2%	Rank history: not on the FY2021 list, #52 in FY2022, not on the FY2023 list and #50 in FY2025; up 137 since FY2023.
47	Biomated Solutions LLC Top agencies Navy (Department of the Navy)	$1,229,400	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
48	Crystal Instruments Corporation Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) Army (Department of the Army)	$1,224,330	0.2%	Rank history: #90 in FY2021, #40 in FY2022, not on the FY2023 list and not on the FY2025 list; up 78 since FY2023.
49	Pioneering Decisive Solutions Inc. Top agencies Army (Department of the Army)	$1,160,601	0.2%	Rank history: not on the FY2021 list, #32 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
50	Chenega Security International, LLC Top agencies USAF (Department of the Air Force)	$1,101,413	0.2%	Rank history: #60 in FY2021, #66 in FY2022, #62 in FY2023 and #62 in FY2025; up 12 since FY2023.
51	Tyonek Machining and Fabrication, LLC Top agencies USAF (Department of the Air Force)	$1,074,338	0.2%	Rank history: not on the FY2021–FY2023 lists and #20 in FY2025; new.
52	Merlin Power Systems LLC Top agencies Army (Department of the Army)	$1,055,498	0.2%	Rank history: not on the FY2021–FY2022 lists, #46 in FY2023 and not on the FY2025 list; down 6 since FY2023.
53	Concepts Nrec, LLC Top agencies Army (Department of the Army)	$1,055,368	0.2%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2025; new.
54	Arbin Instruments, Inc. Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$1,054,953	0.2%	Rank history: not on the FY2021 list, #99 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
55	Orbit/FR Inc. Through Orbit Advanced Technologies, Inc. Top agencies Navy (Department of the Navy) DMEA (Defense Microelectronics Activity)	$1,027,723	0.2%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2023 and not on the FY2025 list; down 33 since FY2023.
56	Semquest, Inc. Top agencies Army (Department of the Army)	$997,600	0.2%	Rank history: #65 in FY2021, #58 in FY2022, #73 in FY2023 and #74 in FY2025; up 17 since FY2023.
57	Eaton Corporation Through Eaton Aerospace LLC Top agencies Navy (Department of the Navy)	$981,584	0.2%	Rank history: #50 in FY2021, not on the FY2022 list, #60 in FY2023 and not on the FY2025 list; up 3 since FY2023.
58	Bloomy Controls Inc. Top agencies Navy (Department of the Navy)	$977,140	0.2%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023 and not on the FY2025 list; up 21 since FY2023.
59	Tel-Instrument Electronics Corp Top agencies Navy (Department of the Navy) Army (Department of the Army)	$945,182	0.2%	Rank history: not on the FY2021 list, #24 in FY2022, #87 in FY2023 and #30 in FY2025; up 28 since FY2023.
60	Madison Electric Co Top agencies DLA (Defense Logistics Agency)	$932,207	0.2%	Rank history: not on the FY2021–FY2023 lists and #84 in FY2025; up 191 since FY2023.
61	3DB Labs Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$899,853	0.2%	Rank history: #25 in FY2021, #54 in FY2022, not on the FY2023 list and #55 in FY2025; up 94 since FY2023.
62	Quantifi Photonics Usa, Inc. Top agencies Navy (Department of the Navy)	$887,314	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
63	2064818 Ontario Inc Through Dol Technologies Inc. Top agencies Navy (Department of the Navy)	$880,000	0.2%	Rank history: not on the FY2021–FY2022 lists, #57 in FY2023 and not on the FY2025 list; down 6 since FY2023.
64	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency)	$879,111	0.2%	Rank history: #30 in FY2021, #49 in FY2022, #50 in FY2023 and #72 in FY2025; down 14 since FY2023.
65	Lincoln Electric Company Top agencies DOT (Department of Transportation)	$852,900	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
66	Rees Scientific Corporation Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services) Army (Department of the Army)	$818,172	0.2%	Rank history: #51 in FY2021, #57 in FY2022, #34 in FY2023 and #43 in FY2025; down 32 since FY2023.
67	Heico Aerospace Corporat 4 awardees, including Research Electronics International, L.L.C., Lucix Corp and Transformational Security, LLC Top agencies DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$800,756	0.2%	Rank history: #41 in FY2021, not on the FY2022 list, #82 in FY2023 and not on the FY2025 list; up 15 since FY2023.
68	Corelis, Inc. Top agencies USAF (Department of the Air Force)	$799,800	0.2%	Rank history: not on the FY2021–FY2023 lists and #94 in FY2025; new.
69	The Parsons Corporation Through Qrc, LLC Top agencies Army (Department of the Army)	$794,307	0.2%	Rank history: not on the FY2021–FY2023 lists and #51 in FY2025; new.
70	Viavi Solutions Inc. Top agencies Navy (Department of the Navy) Commerce (Department of Commerce)	$792,278	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
71	Dualos, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$762,036	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
72	Vprime TECH Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$737,283	0.1%	Rank history: not on the FY2021–FY2023 lists and #85 in FY2025; up 65 since FY2023.
73	Kilgore Flares Company LLC Through Chemring Energetic Devices Inc. Top agencies USAF (Department of the Air Force)	$724,950	0.1%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2025; new.
74	Westest Engineering Corporation Top agencies USAF (Department of the Air Force)	$715,850	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
75	Verder Scientific Inc. Top agencies Army (Department of the Army)	$712,300	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
76	Standard Calibrations Inc. Top agencies Navy (Department of the Navy)	$710,069	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 341 since FY2023.
77	Perkinelmer Inc. Through Excelitas Technologies Corp. Top agencies USAF (Department of the Air Force)	$668,720	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
78	MKC Electronics Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$662,887	0.1%	Rank history: #85 in FY2021, #72 in FY2022, #71 in FY2023 and not on the FY2025 list; down 7 since FY2023.
79	Telectro-Mek Inc. Top agencies DLA (Defense Logistics Agency)	$640,192	0.1%	Rank history: #48 in FY2021, #38 in FY2022, #94 in FY2023 and #26 in FY2025; up 15 since FY2023.
80	Jo-Kell Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$631,832	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 131 since FY2023.
81	National Instruments Corp 2 awardees Top agencies USAF (Department of the Air Force)	$624,800	0.1%	Rank history: #35 in FY2021, #26 in FY2022, #65 in FY2023 and not on the FY2025 list; down 16 since FY2023.
82	Govsmart, Inc. Top agencies USAF (Department of the Air Force)	$594,982	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 84 since FY2023.
83	S I T Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$564,748	0.1%	Rank history: not on the FY2021 list, #91 in FY2022, not on the FY2023 list and #88 in FY2025; up 121 since FY2023.
84	United Western Technologies Corp. Top agencies USAF (Department of the Air Force)	$556,807	0.1%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2025; up 33 since FY2023.
85	Tdp, Inc. Top agencies DOT (Department of Transportation)	$548,150	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
86	The Modal Shop, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$535,667	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
87	Acculogic Ltd Top agencies Navy (Department of the Navy)	$531,290	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
88	Thunder Scientific Corp Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$527,363	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 89 since FY2023.
89	Omicron Electronics Corp USA Top agencies DOI (Department of the Interior)	$526,536	0.1%	Rank history: not on the FY2021–FY2023 lists and #86 in FY2025; new.
90	Bahfed Corp Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$511,299	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
91	Northrop Grumman International Trading, Inc. Through Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force)	$494,857	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
92	Pickering Interfaces, Inc. Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$492,490	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
93	Neocera, LLC Top agencies Navy (Department of the Navy)	$472,500	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
94	EHB Supply Top agencies Navy (Department of the Navy)	$468,886	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 104 since FY2023.
95	Charon Technologies LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$444,176	0.1%	Rank history: not on the FY2021–FY2023 lists and #73 in FY2025; new.
96	Micro-G Lacoste Inc Top agencies DOI (Department of the Interior)	$439,050	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
97	Atap Inc. Top agencies USAF (Department of the Air Force)	$436,736	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
98	Maury Microwave, Inc. Top agencies Navy (Department of the Navy) Commerce (Department of Commerce) NASA (National Aeronautics and Space Administration)	$398,378	0.1%	Rank history: not on the FY2021–FY2022 lists, #80 in FY2023 and not on the FY2025 list; down 18 since FY2023.
99	Moog Inc. Top agencies Navy (Department of the Navy)	$398,220	0.1%	Rank history: not on the FY2021–FY2022 lists, #90 in FY2023 and not on the FY2025 list; down 9 since FY2023.
100	Greene Machine & Manufacturing Inc. Top agencies Navy (Department of the Navy)	$387,745	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.

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100 of 785 contractors listed here. See the rest on GovTribe.

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 $529 million 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 334515 contractors in FY2024?

1. Lockheed Martin Corporation ($52.3M), 2. Tevet LLC ($40.4M), 3. Astronics Test Systems Inc. ($39.6M), 4. Emerson Electric Co ($26.5M), 5. Teradyne Inc. ($22.9M), 6. Logisys Technical Services Inc. ($20.6M), 7. Northrop Grumman Corporation ($14.9M), 8. Innovative Defense Technologies LLC ($14.8M), 9. Rohde & Schwarz GMBH & Co. KG ($14.1M), 10. The Boeing Company ($13.7M).

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