Top 100 Contractors in PSC H2: Equipment and Materials Testing, FY2023

Name: Top 100 Contractors in PSC H2: Equipment and Materials Testing, FY2023
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2022 – Sep 30, 2023 Code page on GovTribe

The top 10 won 61% of FY2023 PSC H2 contract dollars

Contract obligations: $814,974,908 Net of deobligations, by contracts coded PSC H2 or a code under it
Contractors: 881 Parent companies with an obligation
Largest contractor: Reliance Test & Technology, LLC $127 million, 14.9% 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	Reliance Test & Technology, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$127,230,546	14.9%	Rank history: #2 in FY2021, #1 in FY2022, #1 in FY2024 and #1 in FY2025; unchanged since FY2022.
2	L3Harris Technologies, Inc. 5 awardees, including L3 Technologies, Inc., Stellant Systems Inc. and NV5 Geospatial Solutions, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Smithsonian (Smithsonian Institution)	$91,573,627	10.7%	Rank history: #7 in FY2021, #2 in FY2022, #7 in FY2024 and #5 in FY2025; unchanged since FY2022.
3	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies USAF (Department of the Air Force)	$86,182,339	10.1%	Rank history: #5 in FY2021, #4 in FY2022, #2 in FY2024 and #11 in FY2025; up 1 since FY2022.
4	National Collegiate Inventors & Innovators Alliance, Inc. Top agencies HHS (Department of Health and Human Services)	$45,688,704	5.4%	Rank history: #9 in FY2021, #5 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
5	Lockheed Martin Corporation 2 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$43,516,778	5.1%	Rank history: not on the FY2021 list, #7 in FY2022, #15 in FY2024 and #18 in FY2025; up 2 since FY2022.
6	Northrop Grumman Corporation 2 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force)	$39,622,955	4.6%	Rank history: #4 in FY2021, #3 in FY2022, #9 in FY2024 and #4 in FY2025; down 3 since FY2022.
7	The Boeing Company 5 awardees Top agencies USAF (Department of the Air Force)	$25,356,449	3.0%	Rank history: #6 in FY2021, #8 in FY2022, #4 in FY2024 and #30 in FY2025; up 1 since FY2022.
8	RTX Corporation 7 awardees, including Raytheon Company, Rockwell Collins, Inc. and Guangzhou Otis Elevator Co., Ltd. Guangzhou Branch Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DOS (Department of State)	$23,726,993	2.8%	Rank history: #1 in FY2021, #6 in FY2022, #3 in FY2024 and #7 in FY2025; down 2 since FY2022.
9	Tyonek Services Overhaul Facility - Stennis LLC Through Tyonek Global Services LLC Top agencies Army (Department of the Army)	$20,927,500	2.5%	Rank history: not on the FY2021 list, #27 in FY2022, #18 in FY2024 and not on the FY2025 list; up 18 since FY2022.
10	The Whiskey Project Group Ltd Top agencies OSD (Office of the Secretary of Defense)	$20,495,800	2.4%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2024 and #16 in FY2025; new.
11	The Bionetics Corporation 2 awardees Top agencies USAF (Department of the Air Force)	$19,707,859	2.3%	Rank history: #8 in FY2021, #9 in FY2022, #10 in FY2024 and #9 in FY2025; down 2 since FY2022.
12	Ensco Inc. Top agencies DOT (Department of Transportation) DOE (Department of Energy)	$19,199,123	2.3%	Rank history: not on the FY2021 list, #36 in FY2022, #11 in FY2024 and #10 in FY2025; up 24 since FY2022.
13	General Dynamics Corporation 2 awardees, including General Dynamics Information Technology, Inc. Top agencies Navy (Department of the Navy)	$12,912,083	1.5%	Rank history: #10 in FY2021, #12 in FY2022, #12 in FY2024 and #8 in FY2025; down 1 since FY2022.
14	Rocket Lab National Security LLC Top agencies OSD (Office of the Secretary of Defense)	$12,266,240	1.4%	Rank history: not on the FY2021–FY2022 lists, #5 in FY2024 and #27 in FY2025; new.
15	Cherokee Nation Operational Solutions, L.L.C. Top agencies Navy (Department of the Navy) DHA (Defense Health Agency)	$11,213,505	1.3%	Rank history: not on the FY2021 list, #15 in FY2022, #36 in FY2024 and #26 in FY2025; unchanged since FY2022.
16	PPI Technical Services LLC Top agencies USAF (Department of the Air Force)	$8,612,398	1.0%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2024 and #51 in FY2025; new.
17	Hypersonix Launch Systems Ltd Top agencies OSD (Office of the Secretary of Defense)	$8,500,000	1.0%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2024 and not on the FY2025 list; new.
18	Linde Special Projects LLC Top agencies USAF (Department of the Air Force)	$7,647,772	0.9%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #20 in FY2025; new.
19	Swiftships, LLC Top agencies OSD (Office of the Secretary of Defense)	$7,499,990	0.9%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
20	General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy)	$7,452,894	0.9%	Rank history: #19 in FY2021, #34 in FY2022, #22 in FY2024 and not on the FY2025 list; up 14 since FY2022.
21	Global Technology and Management Resources Inc. Top agencies Navy (Department of the Navy)	$7,203,526	0.8%	Rank history: #17 in FY2021, #19 in FY2022, #21 in FY2024 and #21 in FY2025; down 2 since FY2022.
22	Atlas Technologies, Inc. Top agencies Navy (Department of the Navy)	$6,812,907	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
23	The Charles Stark Draper Laboratory, Inc. Top agencies USAF (Department of the Air Force)	$5,840,066	0.7%	Rank history: #18 in FY2021, #17 in FY2022, #26 in FY2024 and #24 in FY2025; down 6 since FY2022.
24	CAE Inc. Through CAE USA Inc. Top agencies USAF (Department of the Air Force)	$5,395,101	0.6%	Rank history: #15 in FY2021, #25 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
25	National Security Technology Accelerator Inc. Top agencies Navy (Department of the Navy)	$5,273,631	0.6%	Rank history: #13 in FY2021, #22 in FY2022, #63 in FY2024 and #14 in FY2025; down 3 since FY2022.
26	Eagle Systems Inc. Top agencies Navy (Department of the Navy)	$5,141,512	0.6%	Rank history: #20 in FY2021, #24 in FY2022, #31 in FY2024 and #29 in FY2025; down 2 since FY2022.
27	Four Points Technology, L.L.C. Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture) National Gallery of Art	$4,564,809	0.5%	Rank history: not on the FY2021 list, #29 in FY2022, #32 in FY2024 and not on the FY2025 list; up 2 since FY2022.
28	Air Company Holdings, Inc. Top agencies OSD (Office of the Secretary of Defense)	$4,254,000	0.5%	Rank history: not on the FY2021 list, #47 in FY2022, #20 in FY2024 and #38 in FY2025; up 19 since FY2022.
29	Republic Mission Systems, Inc. Top agencies OSD (Office of the Secretary of Defense)	$4,232,043	0.5%	Rank history: not on the FY2021 list, #23 in FY2022 and not on the FY2024–FY2025 lists; down 6 since FY2022.
30	Watertight Solutions LLC Top agencies DOS (Department of State)	$3,115,975	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
31	Orbit Fab, Inc. Top agencies OSD (Office of the Secretary of Defense)	$3,050,000	0.4%	Rank history: not on the FY2021 list, #32 in FY2022, #48 in FY2024 and not on the FY2025 list; up 1 since FY2022.
32	Tetra TECH Railai Inc. Top agencies DOT (Department of Transportation)	$2,806,717	0.3%	Rank history: not on the FY2021–FY2022 lists, #37 in FY2024 and #32 in FY2025; new.
33	The Building People LLC Top agencies GSA (General Services Administration) USDA (Department of Agriculture)	$2,744,929	0.3%	Rank history: #74 in FY2021, #33 in FY2022, #58 in FY2024 and #75 in FY2025; unchanged since FY2022.
34	The Survice Engineering Company LLC Top agencies Army (Department of the Army)	$2,703,530	0.3%	Rank history: #22 in FY2021, #35 in FY2022, #42 in FY2024 and #44 in FY2025; up 1 since FY2022.
35	Solutions Through Innovative Technologies Inc. Top agencies USAF (Department of the Air Force)	$2,695,475	0.3%	Rank history: not on the FY2021 list, #42 in FY2022, #29 in FY2024 and #40 in FY2025; up 7 since FY2022.
36	Theodor Wille Intertrade GMBH Through Atlantic Diving Supply, Inc. Top agencies USAF (Department of the Air Force)	$2,568,582	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
37	Professionals HIR LLC Top agencies DHS (Department of Homeland Security)	$2,484,350	0.3%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2024 and not on the FY2025 list; new.
38	Red Six Solutions, LLC Top agencies Army (Department of the Army)	$2,390,611	0.3%	Rank history: not on the FY2021–FY2022 lists, #33 in FY2024 and not on the FY2025 list; up 391 since FY2022.
39	Jung Research and Development Corp Top agencies MDA (DOD Missile Defense Agency)	$2,284,335	0.3%	Rank history: not on the FY2021 list, #41 in FY2022, #38 in FY2024 and #46 in FY2025; up 2 since FY2022.
40	State of California Controllers Office Through California Department of Public Health Top agencies HHS (Department of Health and Human Services)	$2,267,882	0.3%	Rank history: #30 in FY2021, #37 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
41	Kratos Defense & Security Solutions, Inc. Through Kratos Sre, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$2,049,091	0.2%	Rank history: not on the FY2021–FY2022 lists, #80 in FY2024 and not on the FY2025 list; new.
42	Puretech Systems Inc. Top agencies DOT (Department of Transportation)	$1,985,567	0.2%	Rank history: #53 in FY2021, #85 in FY2022, #34 in FY2024 and #61 in FY2025; up 43 since FY2022.
43	Space Exploration Technologies Corp. Top agencies OSD (Office of the Secretary of Defense)	$1,860,004	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
44	The Pennsylvania State University Top agencies Navy (Department of the Navy)	$1,787,418	0.2%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2024 and #43 in FY2025; new.
45	Kunert Electric LLC Top agencies VA (Department of Veterans Affairs)	$1,733,520	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
46	Association of American Railroads Through Transportation Technology Center, Inc. Top agencies DOE (Department of Energy)	$1,551,794	0.2%	Rank history: #41 in FY2021, #45 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
47	Leidos Holdings, Inc. Through Leidos, Inc. Top agencies Navy (Department of the Navy)	$1,548,928	0.2%	Rank history: #25 in FY2021, #38 in FY2022, #45 in FY2024 and #15 in FY2025; down 9 since FY2022.
48	Applus Idiada Karco Engineering, LLC Top agencies DOT (Department of Transportation)	$1,531,425	0.2%	Rank history: #57 in FY2021, not on the FY2022 list, #66 in FY2024 and #49 in FY2025; up 114 since FY2022.
49	Sustainable System Solutions LLC Top agencies Army (Department of the Army)	$1,497,161	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
50	Selecttech Services Corporation Top agencies USAF (Department of the Air Force)	$1,450,803	0.2%	Rank history: #50 in FY2021, #20 in FY2022 and not on the FY2024–FY2025 lists; down 30 since FY2022.
51	MGA Research Corporation 3 awardees Top agencies DOT (Department of Transportation)	$1,404,730	0.2%	Rank history: #64 in FY2021, #54 in FY2022 and not on the FY2024–FY2025 lists; up 3 since FY2022.
52	OHD LLLP Top agencies DOJ (Department of Justice) Navy (Department of the Navy)	$1,396,365	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
53	Greene Machine & Manufacturing Inc. Top agencies USDA (Department of Agriculture)	$1,389,996	0.2%	Rank history: not on the FY2021 list, #94 in FY2022 and not on the FY2024–FY2025 lists; up 41 since FY2022.
54	Vision Building Energy Efficiency LLC Top agencies USAF (Department of the Air Force)	$1,344,000	0.2%	Rank history: #66 in FY2021, #49 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
55	Transportation Research Center Inc. Top agencies DOT (Department of Transportation)	$1,227,347	0.1%	Rank history: #94 in FY2021, not on the FY2022 list, #71 in FY2024 and #53 in FY2025; up 66 since FY2022.
56	Sea Ltd Top agencies CPSC (Consumer Product Safety Commission) DOT (Department of Transportation)	$1,141,373	0.1%	Rank history: #44 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 58 since FY2022.
57	Spectrum Electrical Services, Inc. Top agencies DOS (Department of State)	$1,113,404	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
58	Dynamic Research Inc. Top agencies DOT (Department of Transportation)	$1,108,341	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 346 since FY2022.
59	Technical Communications Solutions Corp Top agencies Army (Department of the Army)	$1,073,310	0.1%	Rank history: not on the FY2021 list, #14 in FY2022 and not on the FY2024–FY2025 lists; down 45 since FY2022.
60	Avtech Research Corporation Top agencies USAF (Department of the Air Force)	$1,069,690	0.1%	Rank history: #38 in FY2021, #56 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
61	Pacific Rim Environmental, Inc. Top agencies VA (Department of Veterans Affairs)	$1,000,454	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
62	Johnson Controls Fire Protection LP 4 awardees Top agencies VA (Department of Veterans Affairs) DOE (Department of Energy)	$992,106	0.1%	Rank history: #92 in FY2021, not on the FY2022 list, #87 in FY2024 and not on the FY2025 list; returned.
63	G 2 Software Systems Inc. Top agencies Navy (Department of the Navy)	$982,000	0.1%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2024 and not on the FY2025 list; new.
64	Keller's LLC Top agencies DOS (Department of State)	$943,235	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
65	Thermo Electron Corporation 5 awardees, including Thermo Electron North America LLC, Fisher Scientific Company L.L.C. and Life Technologies Corporation Top agencies HHS (Department of Health and Human Services) EPA (Environmental Protection Agency) DOT (Department of Transportation)	$895,237	0.1%	Rank history: #91 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 60 since FY2022.
66	Dayton T. Brown, Inc. Top agencies USAF (Department of the Air Force)	$894,812	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #82 in FY2025; up 98 since FY2022.
67	Applied Research Associates, Inc. Top agencies DOT (Department of Transportation)	$842,660	0.1%	Rank history: #60 in FY2021, #74 in FY2022, #64 in FY2024 and #71 in FY2025; up 7 since FY2022.
68	Alvarez LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice)	$825,268	0.1%	Rank history: #59 in FY2021, #60 in FY2022, #73 in FY2024 and not on the FY2025 list; down 8 since FY2022.
69	Hi-Test Laboratories, Inc. Top agencies Navy (Department of the Navy)	$818,800	0.1%	Rank history: #81 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 135 since FY2022.
70	Stone Security Engineering, P.C. Top agencies DOS (Department of State)	$803,640	0.1%	Rank history: #47 in FY2021, #40 in FY2022 and not on the FY2024–FY2025 lists; down 30 since FY2022.
71	Tekla Research, Inc. Top agencies Navy (Department of the Navy)	$801,595	0.1%	Rank history: not on the FY2021 list, #82 in FY2022, #61 in FY2024 and #74 in FY2025; up 11 since FY2022.
72	State of Florida Through Florida Department of Health Top agencies HHS (Department of Health and Human Services)	$800,738	0.1%	Rank history: #55 in FY2021, #62 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
73	Huntington Ingalls Industries, Inc. Through HII Mission Technologies Corp Top agencies Army (Department of the Army)	$780,599	0.1%	Rank history: #49 in FY2021, #63 in FY2022, #57 in FY2024 and #59 in FY2025; down 10 since FY2022.
74	State of New York Through NYS Department of Health Top agencies HHS (Department of Health and Human Services)	$777,632	0.1%	Rank history: not on the FY2021 list, #69 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
75	Winergy LLC Top agencies VA (Department of Veterans Affairs)	$773,920	0.1%	Rank history: #65 in FY2021, #71 in FY2022, #68 in FY2024 and #67 in FY2025; down 4 since FY2022.
76	Oritain USA Inc. Top agencies DHS (Department of Homeland Security)	$741,955	0.1%	Rank history: not on the FY2021 list, #55 in FY2022, not on the FY2024 list and #55 in FY2025; down 21 since FY2022.
77	Sierra Nevada Company, LLC Top agencies USAF (Department of the Air Force)	$703,445	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
78	Strategic Analysis, Inc. Top agencies DOT (Department of Transportation)	$699,865	0.1%	Rank history: not on the FY2021 list, #75 in FY2022, #85 in FY2024 and not on the FY2025 list; down 3 since FY2022.
79	Waters Corporation 3 awardees, including Waters Technologies Corporation, Ta Instruments - Waters L.L.C. and Environmental Resource Associates, Inc. Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security) USDA (Department of Agriculture)	$688,338	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 97 since FY2022.
80	D2 Government Solutions, Inc. Top agencies USAF (Department of the Air Force)	$687,582	0.1%	Rank history: not on the FY2021 list, #86 in FY2022 and not on the FY2024–FY2025 lists; up 6 since FY2022.
81	Kaihonua LLC Top agencies Navy (Department of the Navy) WHS (DOD Washington Headquarters Service)	$674,514	0.1%	Rank history: #71 in FY2021, #48 in FY2022, #59 in FY2024 and #58 in FY2025; down 33 since FY2022.
82	Pennsylvania Commonwealth of Through Pennsylvania Department of Environmental Protection Top agencies HHS (Department of Health and Human Services)	$659,202	0.1%	Rank history: not on the FY2021 list, #79 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
83	Fultonst1 LLC Top agencies DLA (Defense Logistics Agency)	$654,184	0.1%	Rank history: #29 in FY2021, #59 in FY2022, #69 in FY2024 and #33 in FY2025; down 24 since FY2022.
84	LG Strategies LLC Top agencies VA (Department of Veterans Affairs)	$645,200	0.1%	Rank history: #70 in FY2021, #97 in FY2022 and not on the FY2024–FY2025 lists; up 13 since FY2022.
85	D7, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$624,692	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
86	Keysight Technologies, Inc. Top agencies Navy (Department of the Navy) FCC (Federal Communications Commission)	$614,819	0.1%	Rank history: not on the FY2021 list, #95 in FY2022, #78 in FY2024 and #77 in FY2025; up 9 since FY2022.
87	Siemens Aktiengesellschaft 3 awardees, including Siemens Medical Solutions Usa, Inc., Siemens Industry Inc. and Siemens Healthcare Diagnostics Inc. Top agencies VA (Department of Veterans Affairs)	$614,529	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 36 since FY2022.
88	Cynergy Professional Systems LLC Top agencies VA (Department of Veterans Affairs)	$596,458	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
89	Light Structures as Top agencies DHS (Department of Homeland Security)	$553,260	0.1%	Rank history: #68 in FY2021, #90 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
90	Hubert C. Jasinski Dental Laboratory, Inc. Top agencies VA (Department of Veterans Affairs)	$551,833	0.1%	Rank history: not on the FY2021 list, #72 in FY2022 and not on the FY2024–FY2025 lists; down 18 since FY2022.
91	NTS Holding Corporation Inc. 3 awardees, including NTS Technical Systems LLC, NTS Labs, LLC and National Technical Systems, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$546,127	0.1%	Rank history: #56 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
92	R. S. Means Company LLC 4 awardees, including Pacific Scientific Energetic Materials Co California LLC, Tektronix, Inc. and Landauer, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) VA (Department of Veterans Affairs)	$520,008	0.1%	Rank history: #87 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 55 since FY2022.
93	Calspan Corporation Top agencies DOT (Department of Transportation)	$518,614	0.1%	Rank history: #62 in FY2021, #83 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
94	Curtiss-Wright Corporation 2 awardees, including Metal Improvement Company, LLC and Curtiss-Wright DS, Inc. Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$518,518	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
95	Prime One Contracting LLC Top agencies EPA (Environmental Protection Agency)	$502,214	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
96	General Southern Industries Inc Through G & G Steel Inc. Top agencies Army (Department of the Army)	$485,230	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
97	Ameri Con Inc. Top agencies VA (Department of Veterans Affairs)	$470,066	0.1%	Rank history: #88 in FY2021, #87 in FY2022, #75 in FY2024 and #78 in FY2025; down 10 since FY2022.
98	The Fields Group, LLC Top agencies FTC (Federal Trade Commission)	$448,668	0.1%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2024 and #57 in FY2025; new.
99	Sungro Products LLC Top agencies HHS (Department of Health and Human Services)	$441,471	0.1%	Rank history: #97 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 180 since FY2022.
100	Technology Management & Budget Department of Through Michigan Department of Labor and Economic Opportunity Top agencies HHS (Department of Health and Human Services)	$440,134	0.1%	Rank history: not on the FY2021–FY2022 lists, #95 in FY2024 and not on the FY2025 list; up 2 since FY2022.

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100 of 881 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC H2

Code	Net obligations	Largest contractor
H270 Equipment and Materials Testing: Automatic Data Processing Equipment (Including Firmware), Software, Supplies and Support Equipment	$144,337,835	Booz Allen Hamilton Holding Corporation
H266 Equipment and Materials Testing: Instruments and Laboratory Equipment	$87,214,870	National Collegiate Inventors & Innovators Alliance, Inc.
H249 Equipment and Materials Testing: Maintenance and Repair Shop Equipment	$18,512,380	General Dynamics Corporation
H299 Equipment and Materials Testing: Miscellaneous	$17,320,502	Linde Special Projects LLC
H265 Equipment and Materials Testing: Medical, Dental, and Veterinary Equipment and Supplies	$15,212,177	State of California Controllers Office
H259 Equipment and Materials Testing: Electrical and Electronic Equipment Components	$4,354,878	Science Applications International Corporation
H242 Equipment and Materials Testing: Fire Fighting, Rescue, and Safety Equipment; and Environmental Protection Equipment and Materials	$3,867,093	Theodor Wille Intertrade GMBH
H261 Equipment and Materials Testing: Electric Wire, and Power and Distribution Equipment	$3,824,643	Kunert Electric LLC
H246 Equipment and Materials Testing: Water Purification and Sewage Treatment Equipment	$2,812,076	Sungro Products LLC
H212 Equipment and Materials Testing: Fire Control Equipment	$666,000	Watertight Solutions LLC

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 $853 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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 PSC H2 contractors in FY2023?

1. Reliance Test & Technology, LLC ($127M), 2. L3Harris Technologies, Inc. ($91.6M), 3. Booz Allen Hamilton Holding Corporation ($86.2M), 4. National Collegiate Inventors & Innovators Alliance, Inc. ($45.7M), 5. Lockheed Martin Corporation ($43.5M), 6. Northrop Grumman Corporation ($39.6M), 7. The Boeing Company ($25.4M), 8. RTX Corporation ($23.7M), 9. Tyonek Services Overhaul Facility - Stennis LLC ($20.9M), 10. The Whiskey Project Group Ltd ($20.5M).

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