Top 100 Contractors in PSC J066: Maintenance, Repair and Rebuilding of Equipment: Instruments and Laboratory Equipment, Jul 2025–Jun 2026

Name: Top 100 Contractors in PSC J066: Maintenance, Repair and Rebuilding of Equipment: Instruments and Laboratory Equipment, Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 55% of PSC J066 contract dollars from July 2025 through June 2026

Contract obligations: $376,199,052 Net of deobligations, by contracts coded PSC J066
Contractors: 938 Parent companies with an obligation
Largest contractor: Blackwatch International Corporation $129 million, 32.8% 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	Blackwatch International Corporation Top agencies DMEA (Defense Microelectronics Activity)	$128,512,086	32.8%	Rank history: #8 in FY2021, #6 in FY2022, #5 in FY2023, #12 in FY2024 and #3 in FY2025; up 3 since Jul 2024–Jun 2025.
2	PPD Development LP 9 awardees, including Thermo Electron North America LLC, Life Technologies Corporation and FEI Company Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) EPA (Environmental Protection Agency)	$17,995,853	4.6%	Rank history: not on the FY2021–FY2022 lists, #15 in FY2023, #1 in FY2024 and #1 in FY2025; down 1 since Jul 2024–Jun 2025.
3	The Remi Group LLC Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) EPA (Environmental Protection Agency)	$13,384,633	3.4%	Rank history: #19 in FY2021, #30 in FY2022, #21 in FY2023, #6 in FY2024 and #5 in FY2025; up 3 since Jul 2024–Jun 2025.
4	Astronautics Corporation of America Through Kearfott Corporation Top agencies USAF (Department of the Air Force)	$10,576,763	2.7%	Rank history: #11 in FY2021, #19 in FY2022, #9 in FY2023, #5 in FY2024 and #6 in FY2025; down 2 since Jul 2024–Jun 2025.
5	Agilent Technologies, Inc. 4 awardees Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) DHA (Defense Health Agency)	$10,067,807	2.6%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #8 in FY2025; up 4 since Jul 2024–Jun 2025.
6	Goldbelt Frontier, LLC Top agencies HHS (Department of Health and Human Services)	$8,689,711	2.2%	Rank history: #10 in FY2021, #8 in FY2022, #4 in FY2023, #2 in FY2024 and #9 in FY2025; up 1 since Jul 2024–Jun 2025.
7	Danaher Corporation 10 awardees, including AB Sciex LLC, Leica Microsystems Inc. and Cepheid Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$8,588,959	2.2%	Rank history: #2 in FY2021, #3 in FY2022, #3 in FY2023, #3 in FY2024 and #4 in FY2025; down 2 since Jul 2024–Jun 2025.
8	Laboratory Equipment Service, LLC Top agencies HHS (Department of Health and Human Services)	$8,425,164	2.2%	Rank history: not on the FY2021 list, #11 in FY2022, #10 in FY2023, #9 in FY2024 and #7 in FY2025; up 2 since Jul 2024–Jun 2025.
9	Mclaughlin Research Corporation Top agencies Navy (Department of the Navy)	$5,963,452	1.5%	Rank history: #21 in FY2021, #41 in FY2022, #13 in FY2023, #10 in FY2024 and #13 in FY2025; up 4 since Jul 2024–Jun 2025.
10	RTX Corporation 14 awardees, including Rockwell Collins, Inc., Hamilton Sundstrand De Puerto Rico, Inc. and Rosemount Aerospace Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$4,844,299	1.2%	Rank history: #3 in FY2021, #4 in FY2022, #6 in FY2023, #13 in FY2024 and #30 in FY2025; up 25 since Jul 2024–Jun 2025.
11	Becton, Dickinson and Co 6 awardees, including Carefusion Solutions, LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$4,528,119	1.2%	Rank history: #13 in FY2021, #7 in FY2022, #8 in FY2023, #8 in FY2024 and #10 in FY2025; down 3 since Jul 2024–Jun 2025.
12	General Electric Company 7 awardees, including GE Aviation Systems LLC, GE Precision Healthcare LLC and GE Medical Systems Information Technologies, Inc. Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$4,131,718	1.1%	Rank history: #31 in FY2021, #44 in FY2022, #27 in FY2023, #37 in FY2024 and #20 in FY2025; up 12 since Jul 2024–Jun 2025.
13	Honeywell International Inc. 2 awardees Top agencies USAF (Department of the Air Force)	$4,101,052	1.0%	Rank history: not on the FY2021–FY2023 lists, #24 in FY2024 and not on the FY2025 list; up 5 since Jul 2024–Jun 2025.
14	Waters Technologies Corporation Top agencies HHS (Department of Health and Human Services) EPA (Environmental Protection Agency) USDA (Department of Agriculture)	$3,892,846	1.0%	Rank history: not on the FY2021–FY2023 lists, #18 in FY2024 and #14 in FY2025; up 2 since Jul 2024–Jun 2025.
15	Illumina, Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) VA (Department of Veterans Affairs)	$3,847,967	1.0%	Rank history: #17 in FY2021, #10 in FY2022, #11 in FY2023, #11 in FY2024 and #11 in FY2025; down 3 since Jul 2024–Jun 2025.
16	Science Applications International Corporation Top agencies Navy (Department of the Navy)	$3,741,441	1.0%	Rank history: #4 in FY2021, #2 in FY2022, #2 in FY2023, #4 in FY2024 and #2 in FY2025; down 13 since Jul 2024–Jun 2025.
17	L3Harris Technologies, Inc. 4 awardees, including L3Harris Global Communications, Inc. Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security)	$3,660,893	0.9%	Rank history: #47 in FY2021, #17 in FY2022, #35 in FY2023, not on the FY2024 list and #16 in FY2025; up 39 since Jul 2024–Jun 2025.
18	Kbr, Inc. Through KBR Wyle Services, LLC Top agencies DOI (Department of the Interior)	$3,641,715	0.9%	Rank history: #40 in FY2021, #16 in FY2022, #19 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
19	Revvity Health Sciences, Inc. Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) Army (Department of the Army)	$3,277,532	0.8%	Rank history: not on the FY2021–FY2023 lists, #36 in FY2024 and #22 in FY2025; up 7 since Jul 2024–Jun 2025.
20	Bruker Corporation 4 awardees, including Bruker Biospin Corp, Bruker Scientific LLC and Bruker Detection Corp Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) Army (Department of the Army)	$3,238,246	0.8%	Rank history: #27 in FY2021, #22 in FY2022, #14 in FY2023, #16 in FY2024 and #18 in FY2025; down 3 since Jul 2024–Jun 2025.
21	Integrated Production Systems, Inc. Top agencies Army (Department of the Army)	$2,775,608	0.7%	Rank history: #41 in FY2021, #29 in FY2022, #28 in FY2023, #19 in FY2024 and #23 in FY2025; down 2 since Jul 2024–Jun 2025.
22	Ghostrock Systems Development LLC Top agencies Navy (Department of the Navy)	$2,765,628	0.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
23	Agiliti Health Inc Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) Army (Department of the Army)	$2,689,892	0.7%	Rank history: #30 in FY2021, not on the FY2022–FY2023 lists, #45 in FY2024 and #21 in FY2025; up 131 since Jul 2024–Jun 2025.
24	Getinge USA Sales, LLC Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services) Army (Department of the Army)	$2,623,063	0.7%	Rank history: #99 in FY2021, not on the FY2022–FY2023 lists, #14 in FY2024 and #17 in FY2025; down 10 since Jul 2024–Jun 2025.
25	Siemens Corporation 3 awardees, including Siemens Medical Solutions Usa, Inc., Siemens Healthcare Diagnostics Inc. and Varian Medical Systems, Inc. Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$2,456,834	0.6%	Rank history: not on the FY2021–FY2023 lists, #40 in FY2024 and #26 in FY2025; up 16 since Jul 2024–Jun 2025.
26	Carl Zeiss Microscopy, LLC Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) USUHS (DOD Uniformed Services University of the Health Sciences)	$2,450,170	0.6%	Rank history: not on the FY2021–FY2024 lists and #27 in FY2025; up 11 since Jul 2024–Jun 2025.
27	Rees Scientific Corporation Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$2,256,766	0.6%	Rank history: #42 in FY2021, #38 in FY2022, #30 in FY2023, #22 in FY2024 and #25 in FY2025; down 4 since Jul 2024–Jun 2025.
28	Illinois Tool Works Inc. 3 awardees, including North Star Imaging Incorporated and MTS Systems Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$2,136,908	0.5%	Rank history: #89 in FY2021, #76 in FY2022, #43 in FY2023, #27 in FY2024 and #32 in FY2025; down 3 since Jul 2024–Jun 2025.
29	Jeol Usa, Inc. Top agencies Commerce (Department of Commerce) Army (Department of the Army) Navy (Department of the Navy)	$2,079,290	0.5%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and #33 in FY2025; down 2 since Jul 2024–Jun 2025.
30	Northrop Grumman Corporation 2 awardees, including Northrop Grumman Systems Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$1,996,613	0.5%	Rank history: #34 in FY2021, #40 in FY2022, #29 in FY2023, #61 in FY2024 and #29 in FY2025; down 9 since Jul 2024–Jun 2025.
31	Johnson Controls Inc 2 awardees, including Johnson Controls Fire Protection LP Top agencies USAF (Department of the Air Force) USDA (Department of Agriculture)	$1,991,048	0.5%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; new, not ranked in Jul 2024–Jun 2025.
32	UnitedHealth Group Incorporated Through Change Healthcare Technologies LLC Top agencies VA (Department of Veterans Affairs)	$1,827,551	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
33	Mirion Technologies (CAPINTEC) Inc. 5 awardees, including Mirion Technologies (Canberra), Inc. and Sun Nuclear Corp. Top agencies Navy (Department of the Navy) DHA (Defense Health Agency) DOE (Department of Energy)	$1,755,747	0.4%	Rank history: not on the FY2021–FY2023 lists, #44 in FY2024 and #36 in FY2025; up 11 since Jul 2024–Jun 2025.
34	Perkinelmer U.s. LLC Top agencies Army (Department of the Army) Treasury (Department of the Treasury) EPA (Environmental Protection Agency)	$1,656,038	0.4%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2023, #29 in FY2024 and #24 in FY2025; down 12 since Jul 2024–Jun 2025.
35	Translogic Corporation Top agencies VA (Department of Veterans Affairs)	$1,637,214	0.4%	Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; new, not ranked in Jul 2024–Jun 2025.
36	Keysight Technologies, Inc. 4 awardees Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$1,558,012	0.4%	Rank history: #87 in FY2021, #61 in FY2022, #45 in FY2023, #34 in FY2024 and #28 in FY2025; down 7 since Jul 2024–Jun 2025.
37	Talen-X, Inc. Top agencies Army (Department of the Army)	$1,382,680	0.4%	Rank history: not on the FY2021–FY2025 lists; up 177 since Jul 2024–Jun 2025.
38	Nexus Group, LLC Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$1,343,675	0.3%	Rank history: not on the FY2021–FY2023 lists, #38 in FY2024 and #40 in FY2025; up 1 since Jul 2024–Jun 2025.
39	Tecan U.S. Group Inc. Through Tecan U.s., Inc. Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice) VA (Department of Veterans Affairs)	$1,322,118	0.3%	Rank history: not on the FY2021–FY2023 lists, #33 in FY2024 and #47 in FY2025; down 3 since Jul 2024–Jun 2025.
40	RV Global Solutions Inc. Top agencies Army (Department of the Army)	$1,190,079	0.3%	Rank history: #98 in FY2021, not on the FY2022–FY2024 lists and #51 in FY2025; up 115 since Jul 2024–Jun 2025.
41	Beckman Coulter, Inc. Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$1,184,593	0.3%	Rank history: not on the FY2021–FY2023 lists, #60 in FY2024 and #43 in FY2025; up 5 since Jul 2024–Jun 2025.
42	V.j. Technologies, Inc. Top agencies Army (Department of the Army)	$1,160,458	0.3%	Rank history: not on the FY2021 list, #63 in FY2022, not on the FY2023 list, #31 in FY2024 and #52 in FY2025; up 17 since Jul 2024–Jun 2025.
43	Vanderlande Industries Inc. Through Uster Technologies, Inc. Top agencies USDA (Department of Agriculture)	$1,151,260	0.3%	Rank history: not on the FY2021–FY2023 lists, #35 in FY2024 and #80 in FY2025; down 5 since Jul 2024–Jun 2025.
44	Steris Corporation Top agencies USDA (Department of Agriculture) VA (Department of Veterans Affairs) USUHS (DOD Uniformed Services University of the Health Sciences)	$1,109,151	0.3%	Rank history: not on the FY2021–FY2023 lists, #54 in FY2024 and #48 in FY2025; up 6 since Jul 2024–Jun 2025.
45	The Bionetics Corporation Top agencies HHS (Department of Health and Human Services)	$1,106,556	0.3%	Rank history: not on the FY2021–FY2022 lists, #55 in FY2023, #65 in FY2024 and #70 in FY2025; new, not ranked in Jul 2024–Jun 2025.
46	Full Spectrum Group, LLC Top agencies DHS (Department of Homeland Security) Army (Department of the Army) EPA (Environmental Protection Agency)	$1,081,344	0.3%	Rank history: #52 in FY2021, #54 in FY2022, #54 in FY2023, #46 in FY2024 and #46 in FY2025; up 1 since Jul 2024–Jun 2025.
47	Advanced Testing Technologies Inc. Top agencies USAF (Department of the Air Force)	$1,045,746	0.3%	Rank history: #33 in FY2021, #21 in FY2022, #42 in FY2023, #32 in FY2024 and #39 in FY2025; down 15 since Jul 2024–Jun 2025.
48	Gastops Inc. Top agencies USAF (Department of the Air Force)	$1,017,758	0.3%	Rank history: not on the FY2021–FY2024 lists and #45 in FY2025; up 51 since Jul 2024–Jun 2025.
49	Wright Tool Company LLC Through KD Analytical Consulting LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$948,975	0.2%	Rank history: not on the FY2021–FY2023 lists, #50 in FY2024 and #49 in FY2025; unchanged since Jul 2024–Jun 2025.
50	Hamilton Company Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$921,288	0.2%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; up 8 since Jul 2024–Jun 2025.
51	Cytek Biosciences Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Commerce (Department of Commerce)	$910,835	0.2%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; down 6 since Jul 2024–Jun 2025.
52	Olmsted Instrument Co Top agencies USAF (Department of the Air Force)	$848,700	0.2%	Rank history: #45 in FY2021, #37 in FY2022, #46 in FY2023, not on the FY2024 list and #50 in FY2025; up 5 since Jul 2024–Jun 2025.
53	Philips North America LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) USUHS (DOD Uniformed Services University of the Health Sciences)	$847,987	0.2%	Rank history: not on the FY2021–FY2023 lists, #57 in FY2024 and #41 in FY2025; down 20 since Jul 2024–Jun 2025.
54	Fluid Handling LLC 2 awardees, including CMS Research Corp and Evoqua Water Technologies LLC Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$788,272	0.2%	Rank history: not on the FY2021–FY2023 lists, #87 in FY2024 and #65 in FY2025; unchanged since Jul 2024–Jun 2025.
55	American Surgical Instrument Repair LLC Top agencies VA (Department of Veterans Affairs)	$709,881	0.2%	Rank history: not on the FY2021–FY2023 lists, #85 in FY2024 and #42 in FY2025; down 13 since Jul 2024–Jun 2025.
56	Peak Scientific Inc. Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$707,317	0.2%	Rank history: not on the FY2021–FY2025 lists; up 322 since Jul 2024–Jun 2025.
57	Ametek Inc. 8 awardees, including Cameca Instruments, Inc., Nsi-Mi Technologies Inc. and Ametek Programmable Power, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$702,094	0.2%	Rank history: #25 in FY2021, #26 in FY2022, #20 in FY2023, #25 in FY2024 and #90 in FY2025; up 13 since Jul 2024–Jun 2025.
58	Abbott Laboratories Inc. 5 awardees, including Abbott Rapid DX North America LLC and Alere San Diego, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) DOT (Department of Transportation)	$688,319	0.2%	Rank history: not on the FY2021–FY2024 lists and #95 in FY2025; up 69 since Jul 2024–Jun 2025.
59	Shimadzu America Inc. 2 awardees, including Shimadzu Scientific Instruments, Inc. and Shimadzu Precision Instruments, Inc. Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) VA (Department of Veterans Affairs)	$685,370	0.2%	Rank history: not on the FY2021–FY2023 lists, #92 in FY2024 and #75 in FY2025; up 18 since Jul 2024–Jun 2025.
60	Psychology Software Tools Inc. Top agencies VA (Department of Veterans Affairs)	$657,060	0.2%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; new, not ranked in Jul 2024–Jun 2025.
61	Oxford Instruments America, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) EPA (Environmental Protection Agency)	$655,377	0.2%	Rank history: not on the FY2021–FY2023 lists, #86 in FY2024 and #86 in FY2025; up 10 since Jul 2024–Jun 2025.
62	Trillamed LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$644,943	0.2%	Rank history: not on the FY2021–FY2024 lists and #54 in FY2025; up 60 since Jul 2024–Jun 2025.
63	Orion Strategic Solutions, LLC Top agencies Navy (Department of the Navy)	$630,286	0.2%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; down 2 since Jul 2024–Jun 2025.
64	MAK Technologies Inc. 3 awardees, including Element Materials Technology Huntington Beach LLC, Miltope Corporation and ST Engineering Aethon Inc. Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$619,267	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
65	Gatan Inc. Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) Navy (Department of the Navy)	$616,441	0.2%	Rank history: not on the FY2021–FY2023 lists, #64 in FY2024 and #82 in FY2025; down 1 since Jul 2024–Jun 2025.
66	CMS Research Corp 2 awardees, including Evoqua Water Technologies LLC Top agencies Army (Department of the Army) DTRA (Defense Threat Reduction Agency) VA (Department of Veterans Affairs)	$583,022	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
67	Hitachi, Ltd. 2 awardees, including Hitachi High-Tech America, Inc. Top agencies Navy (Department of the Navy) Treasury (Department of the Treasury) NASA (National Aeronautics and Space Administration)	$577,875	0.1%	Rank history: #91 in FY2021, #69 in FY2022, #64 in FY2023, #73 in FY2024 and #55 in FY2025; up 20 since Jul 2024–Jun 2025.
68	Guidehouse Inc. Through Peraton Inc. Top agencies Navy (Department of the Navy)	$556,076	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
69	Fortive Corporation 2 awardees, including Fluke Electronics Corp and Advanced Sterilization Products Services Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) VA (Department of Veterans Affairs)	$552,815	0.1%	Rank history: not on the FY2021–FY2023 lists, #82 in FY2024 and #59 in FY2025; up 4 since Jul 2024–Jun 2025.
70	Tektronix, Inc. Top agencies Navy (Department of the Navy) DMEA (Defense Microelectronics Activity)	$549,694	0.1%	Rank history: not on the FY2021–FY2024 lists and #78 in FY2025; up 35 since Jul 2024–Jun 2025.
71	Newco Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$519,783	0.1%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; up 40 since Jul 2024–Jun 2025.
72	Hologic Sales and Service, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$515,869	0.1%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; down 7 since Jul 2024–Jun 2025.
73	Franklin Young International, Incorporated Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DOJ (Department of Justice)	$512,598	0.1%	Rank history: #58 in FY2021, #57 in FY2022, #67 in FY2023, #78 in FY2024 and #63 in FY2025; up 11 since Jul 2024–Jun 2025.
74	Martin Aijs LLC Top agencies VA (Department of Veterans Affairs)	$500,322	0.1%	Rank history: not on the FY2021–FY2024 lists and #56 in FY2025; down 26 since Jul 2024–Jun 2025.
75	Aerospace Maintenance Solutions LLC Top agencies USAF (Department of the Air Force)	$480,396	0.1%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023, #62 in FY2024 and #58 in FY2025; down 23 since Jul 2024–Jun 2025.
76	Qiagen, LLC Top agencies Army (Department of the Army) USDA (Department of Agriculture) VA (Department of Veterans Affairs)	$475,452	0.1%	Rank history: not on the FY2021–FY2023 lists, #41 in FY2024 and #73 in FY2025; up 3 since Jul 2024–Jun 2025.
77	Nikon Americas Inc. 2 awardees, including Nikon Instruments Inc. and Nikon Metrology, LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$469,251	0.1%	Rank history: not on the FY2021–FY2023 lists, #58 in FY2024 and #77 in FY2025; down 15 since Jul 2024–Jun 2025.
78	Pacific Biosciences of California, Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$467,100	0.1%	Rank history: #78 in FY2021, #75 in FY2022, #98 in FY2023, #94 in FY2024 and #79 in FY2025; up 2 since Jul 2024–Jun 2025.
79	Environmental Resource Associates Inc. 2 awardees, including Ta Instruments - Waters L.L.C. Top agencies Commerce (Department of Commerce) Navy (Department of the Navy) Army (Department of the Army)	$463,531	0.1%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; up 90 since Jul 2024–Jun 2025.
80	OTT Hydromet Corp Top agencies DOI (Department of the Interior)	$450,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
81	Bruker AXS LLC Top agencies Navy (Department of the Navy) DOE (Department of Energy) USAF (Department of the Air Force)	$446,101	0.1%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; up 19 since Jul 2024–Jun 2025.
82	Tescan USA Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DOE (Department of Energy)	$445,233	0.1%	Rank history: not on the FY2021–FY2025 lists; up 48 since Jul 2024–Jun 2025.
83	Avant Garde Scientific, Inc. Top agencies USUHS (DOD Uniformed Services University of the Health Sciences) HHS (Department of Health and Human Services) Navy (Department of the Navy)	$444,461	0.1%	Rank history: not on the FY2021–FY2024 lists and #72 in FY2025; up 6 since Jul 2024–Jun 2025.
84	Landauer, Inc. Top agencies Army (Department of the Army) DHA (Defense Health Agency) Navy (Department of the Navy)	$435,836	0.1%	Rank history: not on the FY2021–FY2023 lists, #100 in FY2024 and #89 in FY2025; up 11 since Jul 2024–Jun 2025.
85	Trane Technologies Peru S.a.C. Through Diversified Laboratory Repair Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) Navy (Department of the Navy)	$435,183	0.1%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; down 22 since Jul 2024–Jun 2025.
86	Mesh Inc. Top agencies Navy (Department of the Navy)	$435,028	0.1%	Rank history: #56 in FY2021, #93 in FY2022, #93 in FY2023, #96 in FY2024 and #85 in FY2025; unchanged since Jul 2024–Jun 2025.
87	Hydro, Inc. Top agencies HHS (Department of Health and Human Services)	$424,278	0.1%	Rank history: not on the FY2021–FY2023 lists, #98 in FY2024 and not on the FY2025 list; up 26 since Jul 2024–Jun 2025.
88	ZEF Scientific Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) DOI (Department of the Interior)	$421,971	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
89	Aero International, LLC Top agencies USAF (Department of the Air Force)	$420,300	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
90	Azenta US Inc. Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy)	$419,094	0.1%	Rank history: not on the FY2021–FY2024 lists and #71 in FY2025; down 22 since Jul 2024–Jun 2025.
91	State of California Department of Water Resources Top agencies DOI (Department of the Interior)	$410,000	0.1%	Rank history: not on the FY2021–FY2025 lists; down 8 since Jul 2024–Jun 2025.
92	Triangle Manifold Services, Inc. Top agencies VA (Department of Veterans Affairs)	$404,721	0.1%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2023 and not on the FY2024–FY2025 lists; up 59 since Jul 2024–Jun 2025.
93	Roche Holdings Inc. Through Roche Diagnostics Corporation Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$389,428	0.1%	Rank history: not on the FY2021–FY2023 lists, #84 in FY2024 and #61 in FY2025; down 11 since Jul 2024–Jun 2025.
94	Rohde & Schwarz Usa, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$376,880	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
95	Steris Instrument Management Services, Inc. Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$372,001	0.1%	Rank history: not on the FY2021–FY2024 lists and #98 in FY2025; up 116 since Jul 2024–Jun 2025.
96	Safepoint Scientific LLC Top agencies USDA (Department of Agriculture) VA (Department of Veterans Affairs)	$370,756	0.1%	Rank history: not on the FY2021–FY2022 lists, #91 in FY2023, #91 in FY2024 and #84 in FY2025; up 19 since Jul 2024–Jun 2025.
97	Transcat, Inc. 2 awardees Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$365,767	0.1%	Rank history: not on the FY2021–FY2025 lists; up 82 since Jul 2024–Jun 2025.
98	Sony Biotechnology Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$354,361	0.1%	Rank history: not on the FY2021–FY2024 lists and #93 in FY2025; up 5 since Jul 2024–Jun 2025.
99	Mediso Usa, LLC Top agencies HHS (Department of Health and Human Services)	$347,635	0.1%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2023 and not on the FY2024–FY2025 lists; up 11 since Jul 2024–Jun 2025.
100	Olympus America Inc Top agencies USAF (Department of the Air Force)	$345,317	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.

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100 of 938 contractors listed here. See the rest on GovTribe.

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $391 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.
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 Jul 2024–Jun 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 J066 contractors in Jul 2025–Jun 2026?

1. Blackwatch International Corporation ($129M), 2. PPD Development LP ($18M), 3. The Remi Group LLC ($13.4M), 4. Astronautics Corporation of America ($10.6M), 5. Agilent Technologies, Inc. ($10.1M), 6. Goldbelt Frontier, LLC ($8.69M), 7. Danaher Corporation ($8.59M), 8. Laboratory Equipment Service, LLC ($8.43M), 9. Mclaughlin Research Corporation ($5.96M), 10. RTX Corporation ($4.84M).

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