Top 100 Contractors in PSC H3: Inspection Services, FY2024

Name: Top 100 Contractors in PSC H3: Inspection Services, FY2024
Creator: GovTribe

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

The top 10 won 39% of FY2024 PSC H3 contract dollars

Contract obligations: $149,304,821 Net of deobligations, by contracts coded PSC H3 or a code under it
Contractors: 879 Parent companies with an obligation
Largest contractor: Jll-Rer Solutions, LLC $27 million, 15.5% 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	Jll-Rer Solutions, LLC Top agencies Army (Department of the Army)	$27,028,346	15.5%	Rank history: not on the FY2021–FY2022 lists, #1 in FY2023 and not on the FY2025 list; unchanged since FY2023.
2	Versar, Inc. 3 awardees Top agencies Army (Department of the Army)	$6,593,466	3.8%	Rank history: #1 in FY2021, #2 in FY2022, #3 in FY2023 and not on the FY2025 list; up 1 since FY2023.
3	Procon Consulting LLC Top agencies NASA (National Aeronautics and Space Administration) DOI (Department of the Interior)	$6,207,612	3.6%	Rank history: #23 in FY2021, #5 in FY2022, #2 in FY2023 and #6 in FY2025; down 1 since FY2023.
4	Lockheed Martin Corporation Top agencies Navy (Department of the Navy)	$5,461,172	3.1%	Rank history: #17 in FY2021, #16 in FY2022, #8 in FY2023 and #1 in FY2025; up 4 since FY2023.
5	Accura Engineering and Consulting Services, Inc. Top agencies Army (Department of the Army)	$5,191,281	3.0%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2023 and #7 in FY2025; up 2 since FY2023.
6	Crawford Consulting Services, Inc. 2 awardees Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$5,074,718	2.9%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2023 and #3 in FY2025; up 35 since FY2023.
7	Project Solutions, Inc. Top agencies DOI (Department of the Interior) USDA (Department of Agriculture) Army (Department of the Army)	$4,185,714	2.4%	Rank history: #9 in FY2021, #39 in FY2022, #5 in FY2023 and #4 in FY2025; down 2 since FY2023.
8	Siemens Industry Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$3,248,805	1.9%	Rank history: not on the FY2021–FY2023 lists and #8 in FY2025; new.
9	K. Parks Consulting, Inc. Top agencies HHS (Department of Health and Human Services)	$3,217,392	1.8%	Rank history: not on the FY2021–FY2022 lists, #21 in FY2023 and not on the FY2025 list; up 12 since FY2023.
10	Interspec, LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) DHS (Department of Homeland Security)	$2,432,915	1.4%	Rank history: #21 in FY2021, #31 in FY2022, #43 in FY2023 and #66 in FY2025; up 33 since FY2023.
11	Institute for Environmental Health Inc. Top agencies USDA (Department of Agriculture)	$2,165,000	1.2%	Rank history: #51 in FY2021, #47 in FY2022, #11 in FY2023 and not on the FY2025 list; unchanged since FY2023.
12	Unified Business Technologies, Inc. Top agencies DOI (Department of the Interior)	$2,161,409	1.2%	Rank history: not on the FY2021 list, #18 in FY2022, #13 in FY2023 and #44 in FY2025; up 1 since FY2023.
13	Compagnie Merieux Alliance Through Silliker, Inc. Top agencies USDA (Department of Agriculture)	$2,126,967	1.2%	Rank history: not on the FY2021 list, #36 in FY2022, #12 in FY2023 and not on the FY2025 list; down 1 since FY2023.
14	Food Safety Net Services, Ltd. Top agencies USDA (Department of Agriculture)	$1,939,390	1.1%	Rank history: #34 in FY2021, #14 in FY2022, #16 in FY2023 and #33 in FY2025; up 2 since FY2023.
15	Advanced Integrated Technologies, LLC Top agencies Navy (Department of the Navy)	$1,911,710	1.1%	Rank history: #25 in FY2021, #17 in FY2022, #18 in FY2023 and #11 in FY2025; up 3 since FY2023.
16	Nakupuna Consulting LLC Top agencies DOD (Department of Defense)	$1,718,635	1.0%	Rank history: not on the FY2021–FY2022 lists, #17 in FY2023 and #12 in FY2025; up 1 since FY2023.
17	Genco Systems Inc. Top agencies DOI (Department of the Interior) DHS (Department of Homeland Security)	$1,503,479	0.9%	Rank history: #68 in FY2021, #32 in FY2022, not on the FY2023 list and #48 in FY2025; up 92 since FY2023.
18	The Gordian Group, Inc. Top agencies DHS (Department of Homeland Security)	$1,458,103	0.8%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2025; new.
19	AECOM Through AECOM Technical Services, Inc. Top agencies Army (Department of the Army)	$1,267,826	0.7%	Rank history: #3 in FY2021, #3 in FY2022, #4 in FY2023 and not on the FY2025 list; down 15 since FY2023.
20	Mabbett & Associates, Inc. Top agencies GSA (General Services Administration)	$1,234,395	0.7%	Rank history: not on the FY2021 list, #38 in FY2022, #19 in FY2023 and #36 in FY2025; down 1 since FY2023.
21	Sure Drain, LLC Top agencies USDA (Department of Agriculture)	$1,232,585	0.7%	Rank history: not on the FY2021–FY2022 lists, #42 in FY2023 and #80 in FY2025; up 21 since FY2023.
22	Ecompex, Inc. Top agencies DHS (Department of Homeland Security)	$1,179,038	0.7%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2023 and #18 in FY2025; unchanged since FY2023.
23	Ardent Management Consulting, LLC Top agencies SSA (Social Security Administration)	$1,168,200	0.7%	Rank history: #19 in FY2021, #21 in FY2022, not on the FY2023 list and not on the FY2025 list; up 279 since FY2023.
24	JBW Group LLC Top agencies DLA (Defense Logistics Agency)	$1,117,571	0.6%	Rank history: not on the FY2021–FY2022 lists, #14 in FY2023 and not on the FY2025 list; down 10 since FY2023.
25	Sustainable Design Consortium, (Sdc) Inc. Top agencies DOT (Department of Transportation)	$1,050,000	0.6%	Rank history: not on the FY2021 list, #25 in FY2022, #28 in FY2023 and #45 in FY2025; up 3 since FY2023.
26	Jacobs Government Services Company Through Amentum Technology, Inc. Top agencies EPA (Environmental Protection Agency)	$1,022,714	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
27	JBW UMX JV LLC Top agencies Army (Department of the Army)	$961,744	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
28	Construction Support Solutions LLC Top agencies DHS (Department of Homeland Security) DOI (Department of the Interior)	$957,972	0.5%	Rank history: not on the FY2021–FY2022 lists, #10 in FY2023 and #21 in FY2025; down 18 since FY2023.
29	AFG Group Inc. Top agencies DOI (Department of the Interior)	$911,803	0.5%	Rank history: #10 in FY2021, #7 in FY2022, #71 in FY2023 and #37 in FY2025; up 42 since FY2023.
30	Fortive Corporation 2 awardees, including Censis Technologies, Inc. and Fluke Electronics Corp Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$895,015	0.5%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2025; new.
31	American Bureau of Shipping Top agencies Commerce (Department of Commerce) DOT (Department of Transportation) Army (Department of the Army)	$857,319	0.5%	Rank history: #26 in FY2021, #52 in FY2022, #78 in FY2023 and #26 in FY2025; up 47 since FY2023.
32	Advenco LLC Top agencies DOI (Department of the Interior)	$854,650	0.5%	Rank history: not on the FY2021 list, #35 in FY2022, #27 in FY2023 and #25 in FY2025; down 5 since FY2023.
33	ACE Consulting Company, Inc. Top agencies DOI (Department of the Interior)	$838,290	0.5%	Rank history: not on the FY2021–FY2022 lists, #32 in FY2023 and #15 in FY2025; down 1 since FY2023.
34	Hurtvet Subcontracting LLC Top agencies VA (Department of Veterans Affairs) DOI (Department of the Interior)	$826,365	0.5%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2025; new.
35	Davidson Brown, Inc. Top agencies DHS (Department of Homeland Security) DOI (Department of the Interior)	$812,307	0.5%	Rank history: #59 in FY2021, #30 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
36	Mowa Development LLC Top agencies Army (Department of the Army)	$787,913	0.5%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2025; new.
37	Sage, LLC 2 awardees Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$786,951	0.5%	Rank history: not on the FY2021 list, #72 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
38	Amentum Technology, Inc. Top agencies EPA (Environmental Protection Agency) Navy (Department of the Navy)	$777,777	0.4%	Rank history: not on the FY2021 list, #91 in FY2022, #48 in FY2023 and not on the FY2025 list; up 10 since FY2023.
39	Interior Systems, Inc. Top agencies DOI (Department of the Interior)	$762,656	0.4%	Rank history: not on the FY2021–FY2023 lists and #29 in FY2025; new.
40	T Square Logistics Services Corporation Top agencies USAF (Department of the Air Force)	$729,887	0.4%	Rank history: not on the FY2021–FY2023 lists and #41 in FY2025; new.
41	Optimum Low Voltage LLC 2 awardees Top agencies VA (Department of Veterans Affairs) Commerce (Department of Commerce) DOI (Department of the Interior)	$698,293	0.4%	Rank history: #27 in FY2021, #33 in FY2022, #36 in FY2023 and #72 in FY2025; down 5 since FY2023.
42	Carcongroup Engineering PSC Top agencies DHS (Department of Homeland Security)	$689,003	0.4%	Rank history: #45 in FY2021, #8 in FY2022, #58 in FY2023 and #23 in FY2025; up 16 since FY2023.
43	Tobacco Control Board Arkansas Top agencies HHS (Department of Health and Human Services)	$681,096	0.4%	Rank history: not on the FY2021–FY2023 lists and #22 in FY2025; new.
44	Veterans Fire and Life Safety Corporation Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DOI (Department of the Interior)	$676,385	0.4%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2023 and #74 in FY2025; up 8 since FY2023.
45	Johnson Controls Inc 2 awardees, including Johnson Controls Fire Protection LP Top agencies DOJ (Department of Justice) USDA (Department of Agriculture) Army (Department of the Army)	$667,424	0.4%	Rank history: not on the FY2021–FY2023 lists and #13 in FY2025; new.
46	Hyperion Biotechnology, Inc. Top agencies VA (Department of Veterans Affairs)	$663,764	0.4%	Rank history: #39 in FY2021, #65 in FY2022, not on the FY2023 list and #32 in FY2025; up 70 since FY2023.
47	Blue Construction Services LLC Top agencies Army (Department of the Army)	$648,315	0.4%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2025; new.
48	Elevated Technologies Services, LLC Top agencies VA (Department of Veterans Affairs)	$646,966	0.4%	Rank history: not on the FY2021–FY2023 lists and #28 in FY2025; up 201 since FY2023.
49	Bacopa Services LLC Top agencies DOI (Department of the Interior)	$621,610	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
50	RJY Group LLC Top agencies VA (Department of Veterans Affairs)	$604,496	0.3%	Rank history: #100 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 99 since FY2023.
51	Cinka Construction & Consulting Services LLC Top agencies DHS (Department of Homeland Security)	$603,673	0.3%	Rank history: not on the FY2021 list, #49 in FY2022, #51 in FY2023 and #39 in FY2025; unchanged since FY2023.
52	Cherokee Nation Through Cherokee Nation Aerospace and Defense, L.L.C. Top agencies Army (Department of the Army)	$599,982	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
53	Team Inc. Through Team Industrial Services, Inc. Top agencies Army (Department of the Army)	$562,380	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
54	HGS Engineering Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$544,727	0.3%	Rank history: not on the FY2021 list, #51 in FY2022, #45 in FY2023 and #47 in FY2025; down 9 since FY2023.
55	Cherokee Nation Aerospace and Defense, L.L.C. Top agencies Army (Department of the Army)	$536,138	0.3%	Rank history: #29 in FY2021, #23 in FY2022, #38 in FY2023 and not on the FY2025 list; down 17 since FY2023.
56	Pacific Coast Contracting Group Top agencies VA (Department of Veterans Affairs)	$524,077	0.3%	Rank history: #84 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 313 since FY2023.
57	Goldenwolf - Crawford Consulting Services Joint Venture LLC Top agencies Army (Department of the Army)	$523,303	0.3%	Rank history: #22 in FY2021, #10 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
58	Greenefficient Inc. Top agencies VA (Department of Veterans Affairs)	$514,002	0.3%	Rank history: #42 in FY2021, #54 in FY2022, #57 in FY2023 and #94 in FY2025; down 1 since FY2023.
59	Parker-Hannifin Corporation Top agencies Navy (Department of the Navy)	$511,363	0.3%	Rank history: not on the FY2021–FY2023 lists and #100 in FY2025; up 379 since FY2023.
60	Jacobs Engineering Group Inc. Through Amentum Technology, Inc. Top agencies EPA (Environmental Protection Agency)	$508,589	0.3%	Rank history: #11 in FY2021, #22 in FY2022, #25 in FY2023 and not on the FY2025 list; down 35 since FY2023.
61	Youngdahl Consulting Group, Inc. Top agencies Army (Department of the Army)	$500,000	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
62	Applus RTD USA Inc. Through Aegeus Inspection Solutions, Inc. Top agencies Navy (Department of the Navy)	$488,470	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
63	Hayat Brown LLC Top agencies DOI (Department of the Interior)	$484,739	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
64	All Native Synergies Company Top agencies DOS (Department of State)	$447,027	0.3%	Rank history: #65 in FY2021, #61 in FY2022, #67 in FY2023 and not on the FY2025 list; up 3 since FY2023.
65	Scdatacom LLC Top agencies VA (Department of Veterans Affairs)	$439,304	0.3%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023 and #46 in FY2025; up 5 since FY2023.
66	Arcadis N.V. Through Arcadis Consulting (Uk) Limited Top agencies USAF (Department of the Air Force)	$437,518	0.3%	Rank history: not on the FY2021 list, #50 in FY2022, #54 in FY2023 and #97 in FY2025; down 12 since FY2023.
67	Sentinel Services, LLC Top agencies VA (Department of Veterans Affairs)	$428,585	0.2%	Rank history: not on the FY2021–FY2022 lists, #66 in FY2023 and #56 in FY2025; down 1 since FY2023.
68	H-Plus ECO Ltd. Top agencies DLA (Defense Logistics Agency)	$428,511	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
69	Cameron Strategic Management LLC Top agencies VA (Department of Veterans Affairs)	$423,040	0.2%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2025; new.
70	Johnson Controls Fire Protection LP 3 awardees Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) Commerce (Department of Commerce)	$413,252	0.2%	Rank history: not on the FY2021–FY2022 lists, #44 in FY2023 and not on the FY2025 list; down 26 since FY2023.
71	Consorzio S&T Services & Technologies Group Top agencies Army (Department of the Army)	$407,741	0.2%	Rank history: #49 in FY2021, #62 in FY2022, #75 in FY2023 and #57 in FY2025; up 4 since FY2023.
72	PAZ Oil Company Limited Top agencies DOS (Department of State)	$402,558	0.2%	Rank history: #58 in FY2021, #26 in FY2022, #56 in FY2023 and #68 in FY2025; down 16 since FY2023.
73	The Maclean Group LLC Top agencies VA (Department of Veterans Affairs)	$397,268	0.2%	Rank history: not on the FY2021 list, #69 in FY2022, #79 in FY2023 and #59 in FY2025; up 6 since FY2023.
74	RTX Corporation Through Goodrich Corporation Top agencies Navy (Department of the Navy)	$390,564	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
75	Independence Constructors Inc. Top agencies VA (Department of Veterans Affairs)	$389,371	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 93 since FY2023.
76	Atlantic First Industries Corporation Top agencies VA (Department of Veterans Affairs)	$389,205	0.2%	Rank history: not on the FY2021–FY2022 lists, #55 in FY2023 and #55 in FY2025; down 21 since FY2023.
77	Triad Logistics Services Corporation Top agencies USAF (Department of the Air Force)	$382,036	0.2%	Rank history: #41 in FY2021, #48 in FY2022, #62 in FY2023 and not on the FY2025 list; down 15 since FY2023.
78	LBT Diagnostic Radiation Physics Consulting Ltd Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$353,249	0.2%	Rank history: #78 in FY2021, not on the FY2022–FY2023 lists and #61 in FY2025; up 29 since FY2023.
79	Media Plumbing & Heating Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior) USAF (Department of the Air Force)	$351,643	0.2%	Rank history: #43 in FY2021, #68 in FY2022, #73 in FY2023 and #82 in FY2025; down 6 since FY2023.
80	Blackhawk Construction LLC Top agencies VA (Department of Veterans Affairs)	$349,115	0.2%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2025; new.
81	Jensen Hughes, Inc. Through Jensen Hughes Korea Co., Ltd. Top agencies Army (Department of the Army)	$325,903	0.2%	Rank history: not on the FY2021 list, #82 in FY2022, #98 in FY2023 and not on the FY2025 list; up 17 since FY2023.
82	Teknion LLC Top agencies DOJ (Department of Justice)	$313,679	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
83	PC Brothers Company Through Serrano Proano Diseno Y Construccion S.A. Top agencies DOS (Department of State)	$312,556	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
84	Johnsondanforth, Inc. Top agencies VA (Department of Veterans Affairs)	$310,613	0.2%	Rank history: not on the FY2021–FY2023 lists and #81 in FY2025; new.
85	Iron Mountain Incorporated Through Iron Mountain Information Management LLC Top agencies VA (Department of Veterans Affairs)	$304,724	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
86	Universal Consultants Incorporated Top agencies VA (Department of Veterans Affairs)	$302,081	0.2%	Rank history: #40 in FY2021, #71 in FY2022, not on the FY2023 list and not on the FY2025 list; up 52 since FY2023.
87	Pearlson Shiplift Corporation Top agencies Army (Department of the Army)	$300,363	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 396 since FY2023.
88	Pro Fire LLC Top agencies Army (Department of the Army)	$300,287	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
89	Allgreen Solutions Inc. Top agencies USAF (Department of the Air Force)	$297,776	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
90	Ibex It Business Experts LLC Top agencies HHS (Department of Health and Human Services)	$291,075	0.2%	Rank history: #60 in FY2021, #84 in FY2022, #97 in FY2023 and not on the FY2025 list; up 7 since FY2023.
91	Sonol Israel Ltd. Top agencies DOS (Department of State)	$289,632	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
92	Mag DS Corp Top agencies Navy (Department of the Navy)	$287,007	0.2%	Rank history: not on the FY2021–FY2023 lists and #54 in FY2025; up 52 since FY2023.
93	Healthwest LLC Top agencies DHA (Defense Health Agency)	$278,503	0.2%	Rank history: #92 in FY2021, #86 in FY2022, #95 in FY2023 and #79 in FY2025; up 2 since FY2023.
94	Caldaia Controls LLC Top agencies VA (Department of Veterans Affairs) DOI (Department of the Interior)	$272,359	0.2%	Rank history: #67 in FY2021, #76 in FY2022, not on the FY2023 list and #89 in FY2025; up 134 since FY2023.
95	Safety Plus LLC Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$260,523	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 252 since FY2023.
96	Coast and Harbor Associates, Inc. Top agencies DOI (Department of the Interior) DHS (Department of Homeland Security)	$258,271	0.1%	Rank history: not on the FY2021 list, #40 in FY2022, not on the FY2023 list and not on the FY2025 list; up 164 since FY2023.
97	Krueger-Gilbert Health Physics, LLC Top agencies VA (Department of Veterans Affairs)	$252,456	0.1%	Rank history: #90 in FY2021, #96 in FY2022, not on the FY2023 list and not on the FY2025 list; up 17 since FY2023.
98	Southern Aire Contracting, Inc. Top agencies Army (Department of the Army)	$246,961	0.1%	Rank history: #74 in FY2021, #92 in FY2022, not on the FY2023 list and #90 in FY2025; up 17 since FY2023.
99	PN Automation Inc. Top agencies HHS (Department of Health and Human Services)	$239,264	0.1%	Rank history: #46 in FY2021, #100 in FY2022, not on the FY2023 list and #91 in FY2025; returned.
100	A-Bear Consult LLC Top agencies VA (Department of Veterans Affairs)	$239,022	0.1%	Rank history: not on the FY2021–FY2023 lists and #69 in FY2025; up 6 since FY2023.

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100 of 879 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC H3

Code	Net obligations	Largest contractor
H399 Inspection and Laboratory Services (except medical/dental): Miscellaneous	$38,001,453	Jll-Rer Solutions, LLC
H356 Inspection and Laboratory Services (except medical/dental): Construction and Building Materials	$20,066,041	Accura Engineering and Consulting Services, Inc.
H312 Inspection and Laboratory Services (except medical/dental): Fire Control Equipment	$11,403,957	Siemens Industry Inc.
H370 Inspection and Laboratory Services (except medical/dental): Automatic Data Processing Equipment (Including Firmware), Software, Supplies and Support Equipment	$4,550,969	The Gordian Group, Inc.
H342 Inspection and Laboratory Services (except medical/dental): Fire Fighting, Rescue, and Safety Equipment; and Environmental Protection Equipment and Materials	$4,377,744	Scdatacom LLC
H363 Inspection and Laboratory Services (except medical/dental): Alarm, Signal, and Security Detection Systems	$3,357,677	Consorzio S&T Services & Technologies Group
H346 Inspection and Laboratory Services (except medical/dental): Water Purification and Sewage Treatment Equipment	$2,840,085	Hyperion Biotechnology, Inc.
H349 Inspection and Laboratory Services (except medical/dental): Maintenance and Repair Shop Equipment	$2,834,718	Elevated Technologies Services, LLC
H365 Inspection and Laboratory Services (except medical/dental): Medical, Dental, and Veterinary Equipment and Supplies	$2,581,801	Fortive Corporation
H345 Inspection and Laboratory Services (except medical/dental): Plumbing, Heating, and Waste Disposal Equipment	$2,291,815	Sure Drain, LLC
H359 Inspection and Laboratory Services (except medical/dental): Electrical and Electronic Equipment Components	$1,857,951	Pacific Coast Contracting Group
H335 Inspection and Laboratory Services (except medical/dental): Service and Trade Equipment	$834,645	Rescue One Training for Life Inc.

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 $175 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 H3 contractors in FY2024?

1. Jll-Rer Solutions, LLC ($27M), 2. Versar, Inc. ($6.59M), 3. Procon Consulting LLC ($6.21M), 4. Lockheed Martin Corporation ($5.46M), 5. Accura Engineering and Consulting Services, Inc. ($5.19M), 6. Crawford Consulting Services, Inc. ($5.07M), 7. Project Solutions, Inc. ($4.19M), 8. Siemens Industry Inc. ($3.25M), 9. K. Parks Consulting, Inc. ($3.22M), 10. Interspec, LLC ($2.43M).

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