Top 100 Contractors in PSC H2: Equipment and Materials Testing, FY2024

Name: Top 100 Contractors in PSC H2: Equipment and Materials Testing, 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 PSC H2 contract dollars

Contract obligations: $848,600,164 Net of deobligations, by contracts coded PSC H2 or a code under it
Contractors: 930 Parent companies with an obligation
Largest contractor: Reliance Test & Technology, LLC $135 million, 15.1% 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)	$135,009,315	15.1%	Rank history: #2 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2025; unchanged since FY2023.
2	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies USAF (Department of the Air Force)	$120,133,807	13.5%	Rank history: #5 in FY2021, #4 in FY2022, #3 in FY2023 and #11 in FY2025; up 1 since FY2023.
3	RTX Corporation 8 awardees, including Raytheon Company and Rockwell Collins, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$67,015,191	7.5%	Rank history: #1 in FY2021, #6 in FY2022, #8 in FY2023 and #7 in FY2025; up 5 since FY2023.
4	The Boeing Company 3 awardees Top agencies USAF (Department of the Air Force)	$53,385,418	6.0%	Rank history: #6 in FY2021, #8 in FY2022, #7 in FY2023 and #30 in FY2025; up 3 since FY2023.
5	Rocket Lab National Security LLC Top agencies OSD (Office of the Secretary of Defense)	$42,359,240	4.7%	Rank history: not on the FY2021–FY2022 lists, #14 in FY2023 and #27 in FY2025; up 9 since FY2023.
6	Hermeus Corp Top agencies OSD (Office of the Secretary of Defense)	$36,023,000	4.0%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2025; new.
7	L3Harris Technologies, Inc. 4 awardees, including L3 Technologies, Inc. and Stellant Systems Inc. Top agencies Navy (Department of the Navy)	$34,410,489	3.9%	Rank history: #7 in FY2021, #2 in FY2022, #2 in FY2023 and #5 in FY2025; down 5 since FY2023.
8	Trax International Corporation Top agencies Army (Department of the Army)	$27,896,000	3.1%	Rank history: not on the FY2021–FY2023 lists and #6 in FY2025; new.
9	Northrop Grumman Corporation 3 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force)	$24,995,043	2.8%	Rank history: #4 in FY2021, #3 in FY2022, #6 in FY2023 and #4 in FY2025; down 3 since FY2023.
10	The Bionetics Corporation Top agencies USAF (Department of the Air Force)	$22,854,752	2.6%	Rank history: #8 in FY2021, #9 in FY2022, #11 in FY2023 and #9 in FY2025; up 1 since FY2023.
11	Ensco Inc. Top agencies DOT (Department of Transportation) DOE (Department of Energy)	$16,874,316	1.9%	Rank history: not on the FY2021 list, #36 in FY2022, #12 in FY2023 and #10 in FY2025; up 1 since FY2023.
12	General Dynamics Corporation 3 awardees, including General Dynamics Information Technology, Inc., General Dynamics Mission Systems, Inc. and General Dynamics Ordnance & Tactical Systems, Inc. Top agencies Navy (Department of the Navy)	$14,858,447	1.7%	Rank history: #10 in FY2021, #12 in FY2022, #13 in FY2023 and #8 in FY2025; up 1 since FY2023.
13	Amentum Services, Inc. Top agencies DHS (Department of Homeland Security)	$12,269,388	1.4%	Rank history: #16 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
14	Atlas Technologies Inc. Top agencies Navy (Department of the Navy)	$11,923,503	1.3%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2025; new.
15	Lockheed Martin Corporation 4 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$11,190,228	1.3%	Rank history: not on the FY2021 list, #7 in FY2022, #5 in FY2023 and #18 in FY2025; down 10 since FY2023.
16	Tyonek Global Services LLC Top agencies Army (Department of the Army)	$9,670,000	1.1%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2025; new.
17	Sossec Inc. Top agencies USAF (Department of the Air Force)	$8,545,251	1.0%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
18	Tyonek Services Overhaul Facility - Stennis LLC Through Tyonek Global Services LLC Top agencies Army (Department of the Army)	$7,900,000	0.9%	Rank history: not on the FY2021 list, #27 in FY2022, #9 in FY2023 and not on the FY2025 list; down 9 since FY2023.
19	Linde LLC Through Linde Special Projects LLC Top agencies USAF (Department of the Air Force)	$7,877,483	0.9%	Rank history: #14 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 84 since FY2023.
20	Air Company Holdings, Inc. Top agencies OSD (Office of the Secretary of Defense)	$7,555,614	0.8%	Rank history: not on the FY2021 list, #47 in FY2022, #28 in FY2023 and #38 in FY2025; up 8 since FY2023.
21	Global Technology and Management Resources Inc. Top agencies Navy (Department of the Navy)	$7,412,174	0.8%	Rank history: #17 in FY2021, #19 in FY2022, #21 in FY2023 and #21 in FY2025; unchanged since FY2023.
22	General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy)	$6,971,106	0.8%	Rank history: #19 in FY2021, #34 in FY2022, #20 in FY2023 and not on the FY2025 list; down 2 since FY2023.
23	Scientia Global, Inc. Top agencies Army (Department of the Army)	$6,955,100	0.8%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
24	Innoveering LLC Top agencies OSD (Office of the Secretary of Defense)	$6,299,160	0.7%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 128 since FY2023.
25	Dynetics, Inc. Top agencies USAF (Department of the Air Force)	$6,000,000	0.7%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
26	The Charles Stark Draper Laboratory, Inc. Top agencies USAF (Department of the Air Force)	$5,425,874	0.6%	Rank history: #18 in FY2021, #17 in FY2022, #23 in FY2023 and #24 in FY2025; down 3 since FY2023.
27	CAE USA Inc. Top agencies USAF (Department of the Air Force)	$5,035,480	0.6%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2025; new.
28	Stoke Space Technologies, Inc. Top agencies OSD (Office of the Secretary of Defense)	$4,500,000	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
29	Solutions Through Innovative Technologies Inc. Top agencies USAF (Department of the Air Force)	$4,187,973	0.5%	Rank history: not on the FY2021 list, #42 in FY2022, #35 in FY2023 and #40 in FY2025; up 6 since FY2023.
30	The Pennsylvania State University Top agencies Navy (Department of the Navy)	$3,977,424	0.4%	Rank history: not on the FY2021–FY2022 lists, #44 in FY2023 and #43 in FY2025; up 14 since FY2023.
31	Eagle Systems Inc. Top agencies Navy (Department of the Navy)	$3,908,801	0.4%	Rank history: #20 in FY2021, #24 in FY2022, #26 in FY2023 and #29 in FY2025; down 5 since FY2023.
32	Four Points Technology, L.L.C. Top agencies VA (Department of Veterans Affairs)	$3,736,493	0.4%	Rank history: not on the FY2021 list, #29 in FY2022, #27 in FY2023 and not on the FY2025 list; down 5 since FY2023.
33	Red Six Solutions, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$3,459,341	0.4%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2023 and not on the FY2025 list; up 5 since FY2023.
34	Puretech Systems Inc. Top agencies DOT (Department of Transportation)	$3,454,466	0.4%	Rank history: #53 in FY2021, #85 in FY2022, #42 in FY2023 and #61 in FY2025; up 8 since FY2023.
35	L3HARRIS Aviation Products Inc Through L3 Technologies, Inc. Top agencies Navy (Department of the Navy)	$3,195,673	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
36	Cherokee Nation Operational Solutions, L.L.C. Top agencies DHA (Defense Health Agency) Navy (Department of the Navy)	$3,050,216	0.3%	Rank history: not on the FY2021 list, #15 in FY2022, #15 in FY2023 and #26 in FY2025; down 21 since FY2023.
37	Tetra TECH Railai Inc. Top agencies DOT (Department of Transportation)	$2,882,867	0.3%	Rank history: not on the FY2021–FY2022 lists, #32 in FY2023 and #32 in FY2025; down 5 since FY2023.
38	Jung Research and Development Corp Top agencies MDA (DOD Missile Defense Agency)	$2,743,239	0.3%	Rank history: not on the FY2021 list, #41 in FY2022, #39 in FY2023 and #46 in FY2025; up 1 since FY2023.
39	G 2 Software Systems Inc. Top agencies Navy (Department of the Navy)	$2,733,649	0.3%	Rank history: not on the FY2021–FY2022 lists, #63 in FY2023 and not on the FY2025 list; up 24 since FY2023.
40	Spaceport Authority Inc. Top agencies OSD (Office of the Secretary of Defense)	$2,684,237	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
41	Professionals HIR LLC Top agencies DHS (Department of Homeland Security)	$2,484,775	0.3%	Rank history: not on the FY2021–FY2022 lists, #37 in FY2023 and not on the FY2025 list; down 4 since FY2023.
42	The Survice Engineering Company LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$2,470,161	0.3%	Rank history: #22 in FY2021, #35 in FY2022, #34 in FY2023 and #44 in FY2025; down 8 since FY2023.
43	Astra Space Operations, LLC Top agencies OSD (Office of the Secretary of Defense)	$2,007,892	0.2%	Rank history: not on the FY2021–FY2023 lists and #41 in FY2025; new.
44	Science Applications International Corporation Top agencies Navy (Department of the Navy)	$1,979,126	0.2%	Rank history: not on the FY2021–FY2023 lists and #22 in FY2025; new.
45	Leidos Holdings, Inc. Through Leidos, Inc. Top agencies Navy (Department of the Navy)	$1,940,880	0.2%	Rank history: #25 in FY2021, #38 in FY2022, #47 in FY2023 and #15 in FY2025; up 2 since FY2023.
46	Vision Building Energy Efficiency LLC Top agencies USAF (Department of the Air Force)	$1,828,854	0.2%	Rank history: not on the FY2021–FY2023 lists and #87 in FY2025; new.
47	Karagozian & Case, Inc. Top agencies DOS (Department of State)	$1,544,459	0.2%	Rank history: not on the FY2021–FY2023 lists and #73 in FY2025; up 110 since FY2023.
48	Orbit Fab, Inc. Top agencies OSD (Office of the Secretary of Defense)	$1,500,000	0.2%	Rank history: not on the FY2021 list, #32 in FY2022, #31 in FY2023 and not on the FY2025 list; down 17 since FY2023.
49	Dynamic Research Inc. Top agencies DOT (Department of Transportation)	$1,471,193	0.2%	Rank history: not on the FY2021–FY2023 lists and #47 in FY2025; new.
50	Spatial Front Inc Top agencies DOT (Department of Transportation)	$1,442,053	0.2%	Rank history: not on the FY2021–FY2023 lists and #64 in FY2025; new.
51	Everbatim, Inc. Top agencies USAF (Department of the Air Force)	$1,370,191	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
52	Kratos Sre, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$1,368,691	0.2%	Rank history: not on the FY2021–FY2023 lists and #81 in FY2025; new.
53	PPI Technical Services LLC Top agencies USAF (Department of the Air Force)	$1,276,110	0.1%	Rank history: not on the FY2021–FY2022 lists, #16 in FY2023 and #51 in FY2025; down 37 since FY2023.
54	DCS Corporation 2 awardees Top agencies USAF (Department of the Air Force)	$1,146,759	0.1%	Rank history: not on the FY2021 list, #51 in FY2022, not on the FY2023 list and #62 in FY2025; up 91 since FY2023.
55	Mosaic Atm, Inc. Top agencies DOT (Department of Transportation)	$1,145,323	0.1%	Rank history: not on the FY2021 list, #31 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
56	Hypersonix Launch Systems Ltd Top agencies OSD (Office of the Secretary of Defense)	$1,042,000	0.1%	Rank history: not on the FY2021–FY2022 lists, #17 in FY2023 and not on the FY2025 list; down 39 since FY2023.
57	Huntington Ingalls Industries, Inc. Through HII Mission Technologies Corp Top agencies Army (Department of the Army)	$1,039,303	0.1%	Rank history: #49 in FY2021, #63 in FY2022, #73 in FY2023 and #59 in FY2025; up 16 since FY2023.
58	The Building People LLC Top agencies USDA (Department of Agriculture)	$1,024,149	0.1%	Rank history: #74 in FY2021, #33 in FY2022, #33 in FY2023 and #75 in FY2025; down 25 since FY2023.
59	Kaihonua LLC Top agencies Navy (Department of the Navy) WHS (DOD Washington Headquarters Service)	$975,181	0.1%	Rank history: #71 in FY2021, #48 in FY2022, #81 in FY2023 and #58 in FY2025; up 22 since FY2023.
60	Florida Department of Health Top agencies HHS (Department of Health and Human Services)	$950,206	0.1%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2025; new.
61	Tekla Research, Inc. Top agencies Navy (Department of the Navy)	$927,128	0.1%	Rank history: not on the FY2021 list, #82 in FY2022, #71 in FY2023 and #74 in FY2025; up 10 since FY2023.
62	MGA Research Corporation Top agencies DOT (Department of Transportation)	$869,162	0.1%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2025; new.
63	National Security Technology Accelerator Inc. Top agencies Navy (Department of the Navy)	$828,620	0.1%	Rank history: #13 in FY2021, #22 in FY2022, #25 in FY2023 and #14 in FY2025; down 38 since FY2023.
64	Applied Research Associates, Inc. Top agencies DOT (Department of Transportation)	$799,924	0.1%	Rank history: #60 in FY2021, #74 in FY2022, #67 in FY2023 and #71 in FY2025; up 3 since FY2023.
65	NYS Department of Health Top agencies HHS (Department of Health and Human Services)	$788,018	0.1%	Rank history: not on the FY2021–FY2023 lists and #65 in FY2025; new.
66	Applus Idiada Karco Engineering, LLC Top agencies DOT (Department of Transportation)	$771,040	0.1%	Rank history: #57 in FY2021, not on the FY2022 list, #48 in FY2023 and #49 in FY2025; down 18 since FY2023.
67	Alvest (USA) Inc. Through TLD America Corporation Top agencies USAF (Department of the Air Force)	$747,500	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
68	Winergy LLC Top agencies VA (Department of Veterans Affairs)	$738,239	0.1%	Rank history: #65 in FY2021, #71 in FY2022, #75 in FY2023 and #67 in FY2025; up 7 since FY2023.
69	Fultonst1 LLC Top agencies DLA (Defense Logistics Agency)	$723,129	0.1%	Rank history: #29 in FY2021, #59 in FY2022, #83 in FY2023 and #33 in FY2025; up 14 since FY2023.
70	Explore Digits Inc Top agencies USAID (US Agency for International Development)	$718,815	0.1%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2025; new.
71	Transportation Research Center Inc. Top agencies DOT (Department of Transportation)	$677,271	0.1%	Rank history: #94 in FY2021, not on the FY2022 list, #55 in FY2023 and #53 in FY2025; down 16 since FY2023.
72	Pennsylvania Department of Environmental Protection Top agencies HHS (Department of Health and Human Services)	$672,569	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
73	Alvarez LLC Top agencies VA (Department of Veterans Affairs)	$666,089	0.1%	Rank history: #59 in FY2021, #60 in FY2022, #68 in FY2023 and not on the FY2025 list; down 5 since FY2023.
74	City of New York Top agencies HHS (Department of Health and Human Services)	$663,450	0.1%	Rank history: not on the FY2021–FY2023 lists and #68 in FY2025; new.
75	Ameri Con Inc. Top agencies VA (Department of Veterans Affairs)	$634,005	0.1%	Rank history: #88 in FY2021, #87 in FY2022, #97 in FY2023 and #78 in FY2025; up 22 since FY2023.
76	Fortive Corporation 3 awardees, including Pacific Scientific Energetic Materials Co California LLC, Landauer, Inc. and Fluke Electronics Corp Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$628,408	0.1%	Rank history: not on the FY2021–FY2023 lists and #70 in FY2025; new.
77	Sintef AS Top agencies DOE (Department of Energy)	$620,072	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
78	Keysight Technologies, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$614,912	0.1%	Rank history: not on the FY2021 list, #95 in FY2022, #86 in FY2023 and #77 in FY2025; up 8 since FY2023.
79	Esco Technologies Inc. Through Doble Engineering Company Top agencies DOI (Department of the Interior) DOE (Department of Energy) Army (Department of the Army)	$601,741	0.1%	Rank history: not on the FY2021–FY2023 lists and #72 in FY2025; up 86 since FY2023.
80	Kratos Defense & Security Solutions, Inc. Through Kratos Sre, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$596,831	0.1%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2023 and not on the FY2025 list; down 39 since FY2023.
81	The Whiskey Project Group Ltd Top agencies OSD (Office of the Secretary of Defense)	$581,670	0.1%	Rank history: not on the FY2021–FY2022 lists, #10 in FY2023 and #16 in FY2025; down 71 since FY2023.
82	Light Structures AS Top agencies DHS (Department of Homeland Security)	$569,860	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
83	The Fields Group, LLC Top agencies FTC (Federal Trade Commission)	$568,415	0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023 and #57 in FY2025; up 15 since FY2023.
84	J3 Enterprise LLC Top agencies VA (Department of Veterans Affairs)	$561,953	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 34 since FY2023.
85	Strategic Analysis, Inc. Top agencies DOT (Department of Transportation)	$553,206	0.1%	Rank history: not on the FY2021 list, #75 in FY2022, #78 in FY2023 and not on the FY2025 list; down 7 since FY2023.
86	Media Plumbing & Heating Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$541,065	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 109 since FY2023.
87	Johnson Controls Fire Protection LP Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture) DOE (Department of Energy)	$521,420	0.1%	Rank history: #92 in FY2021, not on the FY2022 list, #62 in FY2023 and not on the FY2025 list; down 25 since FY2023.
88	Calspan, LLC Top agencies DOT (Department of Transportation)	$492,296	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
89	The Commonwealth of Massachusetts Through Massachusetts Department of Public Health Top agencies HHS (Department of Health and Human Services)	$485,924	0.1%	Rank history: #90 in FY2021, #99 in FY2022, not on the FY2023 list and not on the FY2025 list; up 48 since FY2023.
90	EDL Construction Inc. Top agencies Army (Department of the Army)	$473,850	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
91	TTM Technologies, Inc. Through Telephonics Corporation Top agencies Navy (Department of the Navy)	$465,731	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
92	Quasar Global Technologies Inc. Top agencies VA (Department of Veterans Affairs)	$463,425	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
93	Tech62 Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$454,325	0.1%	Rank history: not on the FY2021–FY2023 lists and #83 in FY2025; up 32 since FY2023.
94	Department of Environment & Conservation Tennessee Top agencies HHS (Department of Health and Human Services)	$452,436	0.1%	Rank history: not on the FY2021–FY2023 lists and #84 in FY2025; up 8 since FY2023.
95	Technology Management & Budget Department of Through Michigan Department of Labor and Economic Opportunity Top agencies HHS (Department of Health and Human Services)	$450,528	0.1%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2023 and not on the FY2025 list; up 5 since FY2023.
96	Aitheras LLC Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy)	$411,786	<0.1%	Rank history: #28 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
97	CACI International Inc. Through Mastodon Design LLC Top agencies Army (Department of the Army)	$410,585	<0.1%	Rank history: not on the FY2021 list, #30 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
98	Long Wave Inc. Top agencies Navy (Department of the Navy)	$402,707	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
99	Woods Hole Oceanographic Institution Top agencies DOI (Department of the Interior)	$398,915	<0.1%	Rank history: #100 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 166 since FY2023.
100	Moog Inc. Top agencies Navy (Department of the Navy)	$398,220	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.

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100 of 930 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	$155,890,316	Booz Allen Hamilton Holding Corporation
H258 Equipment and Materials Testing: Communication, Detection, and Coherent Radiation Equipment	$54,994,470	L3Harris Technologies, Inc.
H266 Equipment and Materials Testing: Instruments and Laboratory Equipment	$26,582,334	The Bionetics Corporation
H220 Equipment and Materials Testing: Ship and Marine Equipment	$17,932,480	General Dynamics Mission Systems, Inc.
H249 Equipment and Materials Testing: Maintenance and Repair Shop Equipment	$16,896,236	General Dynamics Corporation
H265 Equipment and Materials Testing: Medical, Dental, and Veterinary Equipment and Supplies	$13,309,262	Huntington Ingalls Industries, Inc.
H299 Equipment and Materials Testing: Miscellaneous	$12,419,541	Linde LLC
H259 Equipment and Materials Testing: Electrical and Electronic Equipment Components	$4,881,024	Science Applications International Corporation
H261 Equipment and Materials Testing: Electric Wire, and Power and Distribution Equipment	$2,985,871	Ameri Con Inc.
H263 Equipment and Materials Testing: Alarm, Signal, and Security Detection Systems	$1,484,952	Media Plumbing & Heating Inc.
H246 Equipment and Materials Testing: Water Purification and Sewage Treatment Equipment	$1,279,869	Phigenics LLC
H242 Equipment and Materials Testing: Fire Fighting, Rescue, and Safety Equipment; and Environmental Protection Equipment and Materials	$1,245,161	David Perkins Enterprises, Inc.
H212 Equipment and Materials Testing: Fire Control Equipment	$1,241,349	Johnson Controls Fire Protection LP

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 $892 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 PSC H2 contractors in FY2024?

1. Reliance Test & Technology, LLC ($135M), 2. Booz Allen Hamilton Holding Corporation ($120M), 3. RTX Corporation ($67M), 4. The Boeing Company ($53.4M), 5. Rocket Lab National Security LLC ($42.4M), 6. Hermeus Corp ($36M), 7. L3Harris Technologies, Inc. ($34.4M), 8. Trax International Corporation ($27.9M), 9. Northrop Grumman Corporation ($25M), 10. The Bionetics Corporation ($22.9M).

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