Top 100 Contractors in PSC H9: Other Quality, Test, Inspect Services, Aug 2025–Jul 2026

Name: Top 100 Contractors in PSC H9: Other Quality, Test, Inspect Services, Aug 2025–Jul 2026
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Aug 1, 2025 – Jul 31, 2026 Code page on GovTribe

The latest 12 months. See the newest fiscal year's list: Top Contractors in PSC H9: Other Quality, Test, Inspect Services, FY2025.

The top 10 won 62% of PSC H9 contract dollars from August 2025 through July 2026

Contract obligations: $302,732,462 Net of deobligations, by contracts coded PSC H9 or a code under it
Contractors: 494 Parent companies with an obligation
Largest contractor: L3Harris Technologies, Inc. $80.5 million, 24.8% of obligations
Data as of: Nov 5, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	L3Harris Technologies, Inc. 2 awardees, including L3Harris Interstate Electronics Corporation Top agencies Navy (Department of the Navy)	$80,499,468	24.8%	Rank history: #3 in FY2021, #1 in FY2022, #3 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Aug 2024–Jul 2025.
2	Applied Research Associates, Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$29,043,201	8.9%	Rank history: #58 in FY2021, not on the FY2022 list, #12 in FY2023, #4 in FY2024 and #3 in FY2025; up 2 since Aug 2024–Jul 2025.
3	Parsons Corporation Through Parsons Government Services Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$22,611,496	7.0%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2023, #5 in FY2024 and #4 in FY2025; unchanged since Aug 2024–Jul 2025.
4	Man-Machine Systems Assessment (Msa), Incorporated Top agencies Army (Department of the Army)	$15,045,943	4.6%	Rank history: #9 in FY2021, #6 in FY2022, #7 in FY2023, #6 in FY2024 and #6 in FY2025; up 2 since Aug 2024–Jul 2025.
5	RTX Corporation 3 awardees, including Raytheon Company Top agencies MDA (DOD Missile Defense Agency) USAF (Department of the Air Force)	$13,526,777	4.2%	Rank history: #1 in FY2021, #5 in FY2022, #4 in FY2023, #2 in FY2024 and #2 in FY2025; down 3 since Aug 2024–Jul 2025.
6	Northrop Grumman Systems Corporation Top agencies Navy (Department of the Navy)	$12,665,418	3.9%	Rank history: not on the FY2021–FY2022 lists, #21 in FY2023, not on the FY2024 list and #7 in FY2025; up 2 since Aug 2024–Jul 2025.
7	Johnson Controls Federal Systems, LLC Through Johnson Controls Government Systems, LLC Top agencies Army (Department of the Army)	$8,577,190	2.6%	Rank history: not on the FY2021–FY2024 lists and #9 in FY2025; new, not ranked in Aug 2024–Jul 2025.
8	Korea Housing Management Co.,Ltd Top agencies Army (Department of the Army)	$7,469,201	2.3%	Rank history: not on the FY2021–FY2023 lists, #34 in FY2024 and #16 in FY2025; up 14 since Aug 2024–Jul 2025.
9	Tribal One Technology, LLC Top agencies USDA (Department of Agriculture)	$6,218,717	1.9%	Rank history: not on the FY2021–FY2022 lists, #18 in FY2023, #14 in FY2024 and #11 in FY2025; up 2 since Aug 2024–Jul 2025.
10	Navcor Logistics LLC Top agencies USDA (Department of Agriculture)	$6,000,000	1.8%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
11	Honeywell International Inc. 3 awardees, including Vindicator Technologies, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$5,898,710	1.8%	Rank history: #8 in FY2021, #10 in FY2022, #8 in FY2023, #17 in FY2024 and #12 in FY2025; down 1 since Aug 2024–Jul 2025.
12	Mig Gov, LLC Top agencies Navy (Department of the Navy)	$5,195,319	1.6%	Rank history: not on the FY2021–FY2024 lists and #23 in FY2025; new, not ranked in Aug 2024–Jul 2025.
13	JW Business Company Top agencies Army (Department of the Army)	$4,613,693	1.4%	Rank history: not on the FY2021–FY2024 lists and #13 in FY2025; up 2 since Aug 2024–Jul 2025.
14	Astrophysics Inc. Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$3,882,972	1.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
15	Tyco Fire Products LP 2 awardees, including Johnson Controls, Inc. and Johnson Controls Fire Protection LP Top agencies Army (Department of the Army) DOT (Department of Transportation) DOJ (Department of Justice)	$3,463,677	1.1%	Rank history: not on the FY2021–FY2023 lists, #22 in FY2024 and #14 in FY2025; down 2 since Aug 2024–Jul 2025.
16	Pipkin Inc. Top agencies DOI (Department of the Interior)	$3,089,748	1.0%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
17	Murtech, Inc. Top agencies Army (Department of the Army)	$3,025,978	0.9%	Rank history: not on the FY2021–FY2024 lists and #20 in FY2025; new, not ranked in Aug 2024–Jul 2025.
18	Eagle Harbor, LLC Top agencies Navy (Department of the Navy)	$2,800,565	0.9%	Rank history: not on the FY2021 list, #22 in FY2022, #59 in FY2023, #92 in FY2024 and #19 in FY2025; up 33 since Aug 2024–Jul 2025.
19	Sunshine Aero Industries, Incorporated Top agencies USAF (Department of the Air Force)	$2,502,938	0.8%	Rank history: not on the FY2021–FY2023 lists, #24 in FY2024 and #21 in FY2025; unchanged since Aug 2024–Jul 2025.
20	State of Wisconsin Department of Health Services Top agencies HHS (Department of Health and Human Services)	$2,098,530	0.6%	Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; new, not ranked in Aug 2024–Jul 2025.
21	Obsidian Solutions Group LLC Top agencies DTRA (Defense Threat Reduction Agency)	$2,094,413	0.6%	Rank history: not on the FY2021–FY2022 lists, #33 in FY2023, #41 in FY2024 and #36 in FY2025; up 4 since Aug 2024–Jul 2025.
22	Accura Engineering and Consulting Services, Inc. Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$1,927,767	0.6%	Rank history: #34 in FY2021, #49 in FY2022, #38 in FY2023, #45 in FY2024 and #42 in FY2025; up 19 since Aug 2024–Jul 2025.
23	Bristol Bay Native Corporation 2 awardees, including Vista Defense Technologies, LLC and SES Energy Services LLC Top agencies DHA (Defense Health Agency) Navy (Department of the Navy)	$1,902,731	0.6%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; new, not ranked in Aug 2024–Jul 2025.
24	Sayres and Associates LLC Through Joint Research and Development LLC Top agencies Army (Department of the Army)	$1,792,204	0.6%	Rank history: not on the FY2021–FY2024 lists and #15 in FY2025; new, not ranked in Aug 2024–Jul 2025.
25	BMA Technical Services, Inc. Top agencies Army (Department of the Army)	$1,707,618	0.5%	Rank history: #15 in FY2021, #24 in FY2022, #29 in FY2023, #26 in FY2024 and #24 in FY2025; up 1 since Aug 2024–Jul 2025.
26	Lockheed Martin Corporation 2 awardees, including Lockheed Martin Coherent Technologies, Inc. Top agencies MDA (DOD Missile Defense Agency) DOT (Department of Transportation)	$1,664,449	0.5%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023, #10 in FY2024 and #10 in FY2025; down 12 since Aug 2024–Jul 2025.
27	Nelbud Services Group Inc. Through Nelbud Services LLC Top agencies WHS (DOD Washington Headquarters Service)	$1,502,607	0.5%	Rank history: not on the FY2021–FY2023 lists, #35 in FY2024 and #31 in FY2025; up 2 since Aug 2024–Jul 2025.
28	Reli Group Inc. Through Data Quality Science, LLC Top agencies HHS (Department of Health and Human Services)	$1,335,135	0.4%	Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; new, not ranked in Aug 2024–Jul 2025.
29	Optimum Low Voltage LLC Top agencies WHS (DOD Washington Headquarters Service) VA (Department of Veterans Affairs) DOI (Department of the Interior)	$1,317,857	0.4%	Rank history: not on the FY2021–FY2024 lists and #22 in FY2025; up 1 since Aug 2024–Jul 2025.
30	Thermo Fisher Scientific Inc. 4 awardees, including Thermo Scientific Portable Analytical Instruments Inc., Fisher Scientific Company L.L.C. and Remel Inc. Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$1,265,688	0.4%	Rank history: not on the FY2021–FY2025 lists; up 297 since Aug 2024–Jul 2025.
31	Rmgs Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$1,210,064	0.4%	Rank history: not on the FY2021–FY2022 lists, #16 in FY2023, #48 in FY2024 and #43 in FY2025; up 13 since Aug 2024–Jul 2025.
32	Enviros LLC Top agencies VA (Department of Veterans Affairs)	$1,162,739	0.4%	Rank history: not on the FY2021 list, #93 in FY2022, #77 in FY2023, #43 in FY2024 and #47 in FY2025; up 2 since Aug 2024–Jul 2025.
33	Calspan, LLC Top agencies DOT (Department of Transportation)	$1,115,762	0.3%	Rank history: not on the FY2021–FY2023 lists, #55 in FY2024 and #44 in FY2025; up 43 since Aug 2024–Jul 2025.
34	The Corporation of Mercer University Top agencies Navy (Department of the Navy)	$1,069,230	0.3%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; new, not ranked in Aug 2024–Jul 2025.
35	Solid Blend Technologies, Inc. Top agencies VA (Department of Veterans Affairs)	$1,061,617	0.3%	Rank history: not on the FY2021–FY2023 lists, #25 in FY2024 and #26 in FY2025; down 11 since Aug 2024–Jul 2025.
36	Gstek Inc. Top agencies Navy (Department of the Navy)	$1,010,840	0.3%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023, #49 in FY2024 and #39 in FY2025; up 1 since Aug 2024–Jul 2025.
37	Graybar Electric Company, Inc. Top agencies SSA (Social Security Administration)	$959,991	0.3%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023, #28 in FY2024 and #45 in FY2025; up 8 since Aug 2024–Jul 2025.
38	Enrec Enterprises Inc. Top agencies VA (Department of Veterans Affairs)	$959,923	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
39	Chugai Technos Corporation Top agencies Navy (Department of the Navy)	$891,658	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
40	Siemens Corporation 2 awardees, including Siemens Industry Inc. and Siemens Government Technologies Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Army (Department of the Army)	$879,121	0.3%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; up 87 since Aug 2024–Jul 2025.
41	Premier Water & Energy Technology Inc. Top agencies GSA (General Services Administration)	$805,630	0.2%	Rank history: not on the FY2021–FY2023 lists, #78 in FY2024 and #59 in FY2025; up 20 since Aug 2024–Jul 2025.
42	Exelon Corporation Through Constellation Newenergy, Inc. Top agencies DOJ (Department of Justice)	$769,485	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
43	J&B Hartigan, Inc. Top agencies VA (Department of Veterans Affairs)	$733,253	0.2%	Rank history: not on the FY2021–FY2022 lists, #61 in FY2023, not on the FY2024 list and #63 in FY2025; up 19 since Aug 2024–Jul 2025.
44	Media Plumbing & Heating Inc. Top agencies DHS (Department of Homeland Security) Army (Department of the Army) CSOSA (Court Services and Offender Supervision Agency)	$688,480	0.2%	Rank history: #81 in FY2021, #86 in FY2022, not on the FY2023–FY2024 lists and #84 in FY2025; up 53 since Aug 2024–Jul 2025.
45	WEX Inc. Top agencies USDA (Department of Agriculture)	$682,158	0.2%	Rank history: #63 in FY2021, #78 in FY2022, not on the FY2023 list, #64 in FY2024 and #52 in FY2025; up 1 since Aug 2024–Jul 2025.
46	Hurtvet Subcontracting LLC Top agencies VA (Department of Veterans Affairs) DOI (Department of the Interior)	$663,413	0.2%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; up 17 since Aug 2024–Jul 2025.
47	Health Systems Sciences, LLC Top agencies VA (Department of Veterans Affairs)	$639,270	0.2%	Rank history: not on the FY2021–FY2023 lists, #97 in FY2024 and not on the FY2025 list; up 45 since Aug 2024–Jul 2025.
48	Applus Idiada Karco Engineering, LLC Top agencies DOT (Department of Transportation)	$591,105	0.2%	Rank history: not on the FY2021–FY2024 lists and #65 in FY2025; up 127 since Aug 2024–Jul 2025.
49	Unified Industries Incorporated Top agencies Navy (Department of the Navy)	$571,908	0.2%	Rank history: not on the FY2021 list, #63 in FY2022, #72 in FY2023, #62 in FY2024 and #57 in FY2025; up 8 since Aug 2024–Jul 2025.
50	Ricardo LLC Top agencies DOT (Department of Transportation)	$559,214	0.2%	Rank history: not on the FY2021–FY2022 lists, #85 in FY2023, #60 in FY2024 and not on the FY2025 list; up 52 since Aug 2024–Jul 2025.
51	Veterans Fire and Life Safety Corporation Top agencies VA (Department of Veterans Affairs)	$542,518	0.2%	Rank history: not on the FY2021 list, #82 in FY2022, #87 in FY2023, #76 in FY2024 and #62 in FY2025; up 23 since Aug 2024–Jul 2025.
52	Gartner, Inc. Top agencies DOS (Department of State)	$526,396	0.2%	Rank history: #54 in FY2021, #25 in FY2022, #50 in FY2023, #44 in FY2024 and #50 in FY2025; down 3 since Aug 2024–Jul 2025.
53	Las Americas Petroleum Services Corporation Top agencies VA (Department of Veterans Affairs)	$505,947	0.2%	Rank history: #89 in FY2021, #59 in FY2022, not on the FY2023 list, #73 in FY2024 and #69 in FY2025; up 17 since Aug 2024–Jul 2025.
54	Phillips Corporation Top agencies Navy (Department of the Navy)	$498,801	0.2%	Rank history: not on the FY2021–FY2025 lists; up 324 since Aug 2024–Jul 2025.
55	Euromids Top agencies Navy (Department of the Navy)	$487,873	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
56	Coventina Water, LLC Top agencies VA (Department of Veterans Affairs)	$435,603	0.1%	Rank history: not on the FY2021–FY2024 lists and #41 in FY2025; down 17 since Aug 2024–Jul 2025.
57	Campbell Scientific Inc. Top agencies USDA (Department of Agriculture)	$434,931	0.1%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; new, not ranked in Aug 2024–Jul 2025.
58	Camfil USA Inc Top agencies USDA (Department of Agriculture)	$432,000	0.1%	Rank history: not on the FY2021–FY2023 lists, #68 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
59	LG Strategies LLC Top agencies VA (Department of Veterans Affairs)	$412,960	0.1%	Rank history: not on the FY2021–FY2023 lists, #57 in FY2024 and #86 in FY2025; down 11 since Aug 2024–Jul 2025.
60	High Bridge Solutions, LLC Top agencies Navy (Department of the Navy)	$411,553	0.1%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; new, not ranked in Aug 2024–Jul 2025.
61	MGA Research Corporation Top agencies DOT (Department of Transportation)	$407,837	0.1%	Rank history: not on the FY2021–FY2024 lists and #93 in FY2025; new, not ranked in Aug 2024–Jul 2025.
62	Mclellan Integrated Professional Services LLC Top agencies VA (Department of Veterans Affairs)	$400,681	0.1%	Rank history: not on the FY2021–FY2023 lists, #90 in FY2024 and #79 in FY2025; up 29 since Aug 2024–Jul 2025.
63	Citrine LLC Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$396,345	0.1%	Rank history: not on the FY2021–FY2024 lists and #78 in FY2025; new, not ranked in Aug 2024–Jul 2025.
64	Aviate Enterprises, Inc. Top agencies VA (Department of Veterans Affairs)	$379,746	0.1%	Rank history: not on the FY2021–FY2025 lists; up 45 since Aug 2024–Jul 2025.
65	Cameron Strategic Management LLC Top agencies VA (Department of Veterans Affairs)	$359,469	0.1%	Rank history: not on the FY2021–FY2023 lists, #86 in FY2024 and #80 in FY2025; up 17 since Aug 2024–Jul 2025.
66	Verina-Pars JV2 Top agencies Army (Department of the Army)	$353,252	0.1%	Rank history: not on the FY2021–FY2024 lists and #56 in FY2025; down 13 since Aug 2024–Jul 2025.
67	The University of Toledo Top agencies NASA (National Aeronautics and Space Administration)	$349,814	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
68	Tsymmetry Inc. Top agencies DOS (Department of State)	$334,190	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
69	Kastle Systems LLC Top agencies SBA (Small Business Administration)	$328,236	0.1%	Rank history: not on the FY2021 list, #67 in FY2022, not on the FY2023–FY2024 lists and #75 in FY2025; up 9 since Aug 2024–Jul 2025.
70	Tetra Tech, Inc. 2 awardees Top agencies DHS (Department of Homeland Security) USDA (Department of Agriculture)	$327,140	0.1%	Rank history: not on the FY2021–FY2025 lists; up 63 since Aug 2024–Jul 2025.
71	AMA Consulting LLC Top agencies ED (Department of Education)	$326,263	0.1%	Rank history: not on the FY2021–FY2023 lists, #54 in FY2024 and #58 in FY2025; down 15 since Aug 2024–Jul 2025.
72	Kruze Kontrol Logistics LLC Top agencies VA (Department of Veterans Affairs)	$324,078	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
73	Phigenics LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$317,336	0.1%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; unchanged since Aug 2024–Jul 2025.
74	Hexagon Manufacturing Intelligence Inc. Top agencies Army (Department of the Army)	$316,012	0.1%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; new, not ranked in Aug 2024–Jul 2025.
75	Itms - GES JV LLC Top agencies Army (Department of the Army)	$315,312	0.1%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; down 17 since Aug 2024–Jul 2025.
76	Keysight Technologies, Inc. Top agencies Navy (Department of the Navy)	$307,501	0.1%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; up 3 since Aug 2024–Jul 2025.
77	Venergy Group LLC Top agencies VA (Department of Veterans Affairs)	$295,696	0.1%	Rank history: #70 in FY2021, #80 in FY2022, #98 in FY2023, #87 in FY2024 and #95 in FY2025; up 11 since Aug 2024–Jul 2025.
78	Enomis Idril JV LLC Top agencies Army (Department of the Army)	$295,665	0.1%	Rank history: not on the FY2021–FY2024 lists and #37 in FY2025; down 38 since Aug 2024–Jul 2025.
79	Fluid Solutions LLC Top agencies DOS (Department of State)	$290,512	0.1%	Rank history: not on the FY2021–FY2025 lists; up 88 since Aug 2024–Jul 2025.
80	Tesfaye LLC Top agencies DOJ (Department of Justice)	$289,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
81	Research Triangle Institute Top agencies DOJ (Department of Justice)	$287,354	0.1%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; up 8 since Aug 2024–Jul 2025.
82	RC TECH Inc. Top agencies DOL (Department of Labor)	$278,314	0.1%	Rank history: not on the FY2021 list, #98 in FY2022, #80 in FY2023, #65 in FY2024 and #67 in FY2025; down 18 since Aug 2024–Jul 2025.
83	Pauley Rodine Inc. Top agencies Navy (Department of the Navy)	$277,200	0.1%	Rank history: not on the FY2021–FY2025 lists; up 51 since Aug 2024–Jul 2025.
84	William Henderson LLC Top agencies VA (Department of Veterans Affairs)	$276,404	0.1%	Rank history: not on the FY2021–FY2024 lists and #54 in FY2025; down 17 since Aug 2024–Jul 2025.
85	A-Bear Consult LLC Top agencies VA (Department of Veterans Affairs) EPA (Environmental Protection Agency)	$274,442	0.1%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; down 1 since Aug 2024–Jul 2025.
86	AECOM Through AECOM Usa, Inc. Top agencies Army (Department of the Army)	$273,105	0.1%	Rank history: #14 in FY2021, #40 in FY2022, #43 in FY2023, #46 in FY2024 and #29 in FY2025; down 48 since Aug 2024–Jul 2025.
87	True Circuit Electrical Testing L.L.C. Top agencies VA (Department of Veterans Affairs)	$254,817	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
88	Tri Airtesting Inc. Top agencies Navy (Department of the Navy)	$250,150	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
89	Reynolds Systems, Inc. Top agencies Navy (Department of the Navy)	$249,500	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
90	HGS Engineering Inc. Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy)	$245,954	0.1%	Rank history: #47 in FY2021, #39 in FY2022, not on the FY2023–FY2024 lists and #55 in FY2025; down 36 since Aug 2024–Jul 2025.
91	Pacific Coast Contracting Group Top agencies VA (Department of Veterans Affairs)	$238,260	0.1%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2023 and not on the FY2024–FY2025 lists; up 114 since Aug 2024–Jul 2025.
92	Harrell Contracting Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$237,882	0.1%	Rank history: not on the FY2021–FY2025 lists; up 65 since Aug 2024–Jul 2025.
93	Lyle Machinery Co Top agencies NASA (National Aeronautics and Space Administration)	$237,437	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
94	Nuaxis LLC Top agencies DOL (Department of Labor)	$236,890	0.1%	Rank history: not on the FY2021 list, #99 in FY2022, not on the FY2023 list, #81 in FY2024 and #72 in FY2025; down 9 since Aug 2024–Jul 2025.
95	I-2-I Solutions, Inc. Top agencies VA (Department of Veterans Affairs)	$232,094	0.1%	Rank history: not on the FY2021–FY2023 lists, #75 in FY2024 and #83 in FY2025; up 3 since Aug 2024–Jul 2025.
96	LBT Diagnostic Radiation Physics Consulting Ltd Top agencies VA (Department of Veterans Affairs)	$226,515	0.1%	Rank history: not on the FY2021–FY2025 lists; up 54 since Aug 2024–Jul 2025.
97	Muchnick Hannah Top agencies Smithsonian (Smithsonian Institution)	$218,880	0.1%	Rank history: not on the FY2021–FY2025 lists; up 75 since Aug 2024–Jul 2025.
98	Caldaia Controls LLC Top agencies VA (Department of Veterans Affairs)	$217,504	0.1%	Rank history: not on the FY2021–FY2025 lists; up 8 since Aug 2024–Jul 2025.
99	Environmental Compliance Consultants, Inc. Top agencies VA (Department of Veterans Affairs)	$205,425	0.1%	Rank history: not on the FY2021–FY2025 lists; up 19 since Aug 2024–Jul 2025.
100	Hyperion Biotechnology, Inc. Top agencies VA (Department of Veterans Affairs)	$204,857	0.1%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; down 4 since Aug 2024–Jul 2025.

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100 of 494 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC H9

Code	Net obligations	Largest contractor
H999 Other Quality Control, Testing and Inspection Services: Miscellaneous	$91,722,905	Applied Research Associates, Inc.
H946 Other Quality Control, Testing and Inspection Services: Water Purification and Sewage Treatment Equipment	$5,717,448	Solid Blend Technologies, Inc.
H912 Other Quality Control, Testing and Inspection Services: Fire Control Equipment	$3,377,992	Media Plumbing & Heating Inc.
H966 Other Quality Control, Testing and Inspection Services: Instruments and Laboratory Equipment	$1,704,952	Verina-Pars JV2

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 $325 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Aug 2024–Jul 2025. "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.
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 H9 contractors in Aug 2025–Jul 2026?

1. L3Harris Technologies, Inc. ($80.5M), 2. Applied Research Associates, Inc. ($29M), 3. Parsons Corporation ($22.6M), 4. Man-Machine Systems Assessment (Msa), Incorporated ($15M), 5. RTX Corporation ($13.5M), 6. Northrop Grumman Systems Corporation ($12.7M), 7. Johnson Controls Federal Systems, LLC ($8.58M), 8. Korea Housing Management Co.,Ltd ($7.47M), 9. Tribal One Technology, LLC ($6.22M), 10. Navcor Logistics LLC ($6M).

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