Top 100 Contractors in PSC 66: Instruments and Laboratory Equipment, FY2025

Name: Top 100 Contractors in PSC 66: Instruments and Laboratory Equipment, FY2025
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 22% of FY2025 PSC 66 contract dollars

Contract obligations: $3,648,939,503 Net of deobligations, by contracts coded PSC 66 or a code under it
Contractors: 3,617 Parent companies with an obligation
Largest contractor: Honeywell International Inc. $134 million, 3.5% 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	Honeywell International Inc. 14 awardees, including Honeywell Aerospace International Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$133,726,556	3.5%	Rank history: #19 in FY2021, #11 in FY2022, #5 in FY2023 and #2 in FY2024; up 1 since FY2024.
2	Lockheed Martin Corporation 11 awardees, including Sikorsky Aircraft Corporation, Lockheed Martin Sippican, Inc. and Derco Aerospace, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DLA (Defense Logistics Agency)	$116,681,333	3.0%	Rank history: #4 in FY2021, #5 in FY2022, #3 in FY2023 and #1 in FY2024; down 1 since FY2024.
3	Government Scientific Source Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) VA (Department of Veterans Affairs)	$113,481,535	3.0%	Rank history: #15 in FY2021, #9 in FY2022, #10 in FY2023 and #5 in FY2024; up 2 since FY2024.
4	Rapiscan Systems Inc Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$74,347,473	1.9%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2024; up 36 since FY2024.
5	BAE Systems 10 awardees, including BAE Systems Information and Electronic Systems Integration Inc., BAE Systems Controls Inc. and BAE Systems (Operations) Limited Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$72,036,379	1.9%	Rank history: #44 in FY2021, #10 in FY2022, #13 in FY2023 and #30 in FY2024; up 25 since FY2024.
6	Abbott Laboratories Inc. 6 awardees, including Abbott Rapid DX North America LLC and Alere San Diego, Inc. Top agencies VA (Department of Veterans Affairs) DLA (Defense Logistics Agency) HHS (Department of Health and Human Services)	$71,745,904	1.9%	Rank history: #1 in FY2021, #2 in FY2022, #16 in FY2023 and #10 in FY2024; up 4 since FY2024.
7	PPD Development LP 12 awardees, including Life Technologies Corporation, Thermo Electron North America LLC and FEI Company Top agencies DOJ (Department of Justice) HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$71,596,967	1.9%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023 and #9 in FY2024; up 2 since FY2024.
8	L3Harris Technologies, Inc. 14 awardees, including L3Harris Interstate Electronics Corporation, Acron Aviation, Inc. and Fisica Applied Technologies, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$70,367,161	1.8%	Rank history: #12 in FY2021, #7 in FY2022, #8 in FY2023 and #6 in FY2024; down 2 since FY2024.
9	RTX Corporation 26 awardees, including Rockwell Collins, Inc., Raytheon Company and Simmonds Precision Products Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$68,110,368	1.8%	Rank history: #10 in FY2021, #6 in FY2022, #2 in FY2023 and #3 in FY2024; down 6 since FY2024.
10	Northrop Grumman Corporation 19 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$67,561,531	1.8%	Rank history: #11 in FY2021, #12 in FY2022, #7 in FY2023 and #8 in FY2024; down 2 since FY2024.
11	Arthrex Inc. Top agencies DLA (Defense Logistics Agency)	$64,962,400	1.7%	Rank history: not on the FY2021–FY2023 lists and #96 in FY2024; up 85 since FY2024.
12	Stryker Corporation 2 awardees, including Howmedica Osteonics Corp and Stryker Sales, LLC Top agencies DLA (Defense Logistics Agency)	$58,462,388	1.5%	Rank history: #25 in FY2021, #18 in FY2022, #21 in FY2023 and #12 in FY2024; unchanged since FY2024.
13	Smiths Detection Inc. 2 awardees Top agencies DHS (Department of Homeland Security) Army (Department of the Army) USAF (Department of the Air Force)	$58,177,543	1.5%	Rank history: not on the FY2021–FY2023 lists and #89 in FY2024; up 76 since FY2024.
14	Johnson & Johnson 2 awardees, including Johnson & Johnson Health Care Systems Inc. and Depuy Synthes Sales Inc. Top agencies DLA (Defense Logistics Agency) HHS (Department of Health and Human Services)	$52,481,562	1.4%	Rank history: #20 in FY2021, #15 in FY2022, #17 in FY2023 and #22 in FY2024; up 8 since FY2024.
15	Danaher Corporation 14 awardees, including Cepheid, Leica Microsystems Inc. and Hach Company Top agencies VA (Department of Veterans Affairs) DLA (Defense Logistics Agency) HHS (Department of Health and Human Services)	$51,770,985	1.4%	Rank history: #5 in FY2021, #3 in FY2022, #6 in FY2023 and #4 in FY2024; down 11 since FY2024.
16	Beckman Coulter, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Navy (Department of the Navy)	$51,500,048	1.3%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2024; up 16 since FY2024.
17	Technical Communities, Inc. Top agencies DOT (Department of Transportation) Navy (Department of the Navy) USAF (Department of the Air Force)	$50,819,965	1.3%	Rank history: #29 in FY2021, #30 in FY2022, #28 in FY2023 and #14 in FY2024; down 3 since FY2024.
18	Leidos Holdings, Inc. 6 awardees, including Leidos, Inc. Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$50,361,163	1.3%	Rank history: #8 in FY2021, #36 in FY2022, #27 in FY2023 and not on the FY2024 list; up 306 since FY2024.
19	Fisher Scientific Company L.L.C. Top agencies DLA (Defense Logistics Agency) HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$45,590,010	1.2%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2024; down 2 since FY2024.
20	D-2 Incorporated Top agencies Army (Department of the Army) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$43,934,590	1.1%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2024; up 30 since FY2024.
21	Canadian Commercial Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$41,805,733	1.1%	Rank history: not on the FY2021–FY2023 lists and #20 in FY2024; down 1 since FY2024.
22	Roche Holdings Inc. Through Roche Diagnostics Corporation Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$40,956,568	1.1%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2024; up 17 since FY2024.
23	Beacon Point Associates LLC Top agencies DLA (Defense Logistics Agency)	$40,426,122	1.1%	Rank history: #27 in FY2021, #23 in FY2022, #31 in FY2023 and #18 in FY2024; down 5 since FY2024.
24	Total Technology, Inc. Top agencies Army (Department of the Army)	$31,972,108	0.8%	Rank history: #45 in FY2021, #17 in FY2022, not on the FY2023 list and #71 in FY2024; up 47 since FY2024.
25	Teledyne Flir Defense, LLC Top agencies Army (Department of the Army)	$29,635,782	0.8%	Rank history: not on the FY2021–FY2024 lists; new.
26	Dove Medical Supply LLC Top agencies DLA (Defense Logistics Agency) VA (Department of Veterans Affairs)	$28,843,343	0.8%	Rank history: #41 in FY2021, #39 in FY2022, #42 in FY2023 and #35 in FY2024; up 9 since FY2024.
27	Southwest Research Institute Top agencies NASA (National Aeronautics and Space Administration) Commerce (Department of Commerce) DLA (Defense Logistics Agency)	$28,196,116	0.7%	Rank history: #16 in FY2021, #84 in FY2022 and not on the FY2023–FY2024 lists; returned.
28	Agilent Technologies, Inc. 3 awardees Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) HHS (Department of Health and Human Services)	$25,938,703	0.7%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2024; down 1 since FY2024.
29	Atlantic Diving Supply, Inc. 2 awardees, including 4 Star Technologies, Inc. Top agencies DLA (Defense Logistics Agency) DFAS (Defense Finance and Accounting Service) Army (Department of the Army)	$25,615,695	0.7%	Rank history: not on the FY2021–FY2023 lists and #52 in FY2024; up 23 since FY2024.
30	Astrophysics Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) Treasury (Department of the Treasury)	$22,897,030	0.6%	Rank history: #21 in FY2021, not on the FY2022–FY2023 lists and #64 in FY2024; up 34 since FY2024.
31	The Boeing Company 10 awardees, including Boeing Distribution, Inc., Boeing Distribution Services, Inc. and Jeppesen Foreflight, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$22,642,814	0.6%	Rank history: #23 in FY2021, not on the FY2022 list, #15 in FY2023 and #45 in FY2024; up 14 since FY2024.
32	Fortive Corporation 2 awardees, including Fluke Electronics Corp and Thomson Linear LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Commerce (Department of Commerce)	$22,436,833	0.6%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2024; up 1 since FY2024.
33	Biomerieux Inc. 4 awardees, including Biofire Defense LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) USDA (Department of Agriculture)	$22,265,370	0.6%	Rank history: not on the FY2021–FY2024 lists; up 118 since FY2024.
34	Rosemount Aerospace Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$21,565,626	0.6%	Rank history: not on the FY2021–FY2023 lists and #66 in FY2024; up 32 since FY2024.
35	Zimmer Biomet Holdings Inc. Through Zimmer US Inc. Top agencies DLA (Defense Logistics Agency)	$21,558,007	0.6%	Rank history: not on the FY2021–FY2023 lists and #61 in FY2024; up 26 since FY2024.
36	Rev-Cap Company, Inc. Top agencies DLA (Defense Logistics Agency)	$21,305,527	0.6%	Rank history: not on the FY2021–FY2024 lists; up 349 since FY2024.
37	Ludlum Measurements, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$21,190,845	0.6%	Rank history: not on the FY2021 list, #63 in FY2022, #52 in FY2023 and #24 in FY2024; down 13 since FY2024.
38	Siemens Corporation 2 awardees, including Siemens Healthcare Diagnostics Inc. and Siemens Medical Solutions Usa, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$21,076,217	0.6%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2024; down 4 since FY2024.
39	Honeybee Robotics LLC Top agencies NASA (National Aeronautics and Space Administration)	$20,943,926	0.5%	Rank history: not on the FY2021–FY2024 lists; up 218 since FY2024.
40	Astronics Test Systems Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$20,735,543	0.5%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2024; down 24 since FY2024.
41	Red One Medical Devices LLC Top agencies DLA (Defense Logistics Agency)	$19,948,384	0.5%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023 and #42 in FY2024; up 1 since FY2024.
42	Illumina, Inc. 2 awardees Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) Navy (Department of the Navy)	$17,297,294	0.5%	Rank history: #38 in FY2021, #35 in FY2022, #36 in FY2023 and #44 in FY2024; up 2 since FY2024.
43	Boston Scientific Corp 2 awardees, including Boston Scientific Neuromodulation Corp Top agencies DLA (Defense Logistics Agency) HHS (Department of Health and Human Services)	$17,183,475	0.4%	Rank history: #69 in FY2021, #70 in FY2022, #65 in FY2023 and #54 in FY2024; up 11 since FY2024.
44	Genesis Vision, Inc. Top agencies DLA (Defense Logistics Agency)	$16,877,527	0.4%	Rank history: #66 in FY2021, #65 in FY2022, #71 in FY2023 and #70 in FY2024; up 26 since FY2024.
45	Kilgore Flares Company LLC 3 awardees, including Chemring Sensors and Electronic Systems, Inc. and Chemring Energetic Devices Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$16,788,518	0.4%	Rank history: not on the FY2021–FY2022 lists, #61 in FY2023 and #41 in FY2024; down 4 since FY2024.
46	Ametek Inc. 16 awardees, including Spectro Scientific, Inc., Nsi-Mi Technologies Inc. and Advanced Measurement Technology Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$16,671,850	0.4%	Rank history: #39 in FY2021, #34 in FY2022, #58 in FY2023 and not on the FY2024 list; up 97 since FY2024.
47	Trillamed LLC Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$16,647,460	0.4%	Rank history: not on the FY2021–FY2024 lists; up 162 since FY2024.
48	Sysmex America Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$16,350,058	0.4%	Rank history: not on the FY2021–FY2023 lists and #90 in FY2024; up 42 since FY2024.
49	Sustainable System Solutions LLC Top agencies Army (Department of the Army)	$16,243,720	0.4%	Rank history: #17 in FY2021, #14 in FY2022, #23 in FY2023 and #29 in FY2024; down 20 since FY2024.
50	Alliant Enterprises, LLC Top agencies DLA (Defense Logistics Agency) VA (Department of Veterans Affairs)	$15,865,820	0.4%	Rank history: #36 in FY2021, #41 in FY2022, #49 in FY2023 and #46 in FY2024; down 4 since FY2024.
51	Franklin Young International, Incorporated Top agencies DLA (Defense Logistics Agency) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$15,090,270	0.4%	Rank history: #61 in FY2021, #50 in FY2022, #62 in FY2023 and #48 in FY2024; down 3 since FY2024.
52	Affirmative Solutions LLC Top agencies DLA (Defense Logistics Agency)	$14,947,469	0.4%	Rank history: not on the FY2021 list, #83 in FY2022 and not on the FY2023–FY2024 lists; up 271 since FY2024.
53	Rolls-Royce Solutions America Inc. 2 awardees, including Rolls-Royce Corporation Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$14,227,896	0.4%	Rank history: not on the FY2021–FY2024 lists; up 152 since FY2024.
54	Scitech Services Inc. Top agencies Army (Department of the Army) DFAS (Defense Finance and Accounting Service)	$14,106,310	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
55	Bright Silicon Technologies, Inc. Top agencies USAF (Department of the Air Force)	$13,899,999	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
56	AAR Government Services Inc. 2 awardees, including AAR Supply Chain, Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) USAF (Department of the Air Force)	$13,865,193	0.4%	Rank history: not on the FY2021–FY2024 lists; up 82 since FY2024.
57	Cedarville Engineering Group LLC Top agencies Army (Department of the Army)	$13,344,839	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
58	Ortho-Clinical Diagnostics Inc. 3 awardees, including Quidelortho Sales Company, LLC and Quidel Corp Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$12,993,650	0.3%	Rank history: not on the FY2021–FY2024 lists; up 65 since FY2024.
59	Transaero, Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$12,722,520	0.3%	Rank history: #64 in FY2021, #81 in FY2022, #86 in FY2023 and #36 in FY2024; down 23 since FY2024.
60	VWR International LLC 2 awardees, including Labrepco LLC Top agencies DLA (Defense Logistics Agency) HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$11,921,239	0.3%	Rank history: not on the FY2021–FY2023 lists and #81 in FY2024; up 21 since FY2024.
61	Henry Schein, Inc. Top agencies DLA (Defense Logistics Agency)	$11,732,285	0.3%	Rank history: #48 in FY2021, #56 in FY2022, #69 in FY2023 and #62 in FY2024; up 1 since FY2024.
62	Intercomp Co Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$11,684,010	0.3%	Rank history: not on the FY2021–FY2024 lists; up 256 since FY2024.
63	Era Health LLC Top agencies DLA (Defense Logistics Agency)	$11,654,071	0.3%	Rank history: not on the FY2021 list, #77 in FY2022, #75 in FY2023 and #57 in FY2024; down 6 since FY2024.
64	Kls-Martin Limited Partnership Top agencies DLA (Defense Logistics Agency)	$11,345,023	0.3%	Rank history: not on the FY2021–FY2023 lists and #85 in FY2024; up 21 since FY2024.
65	San Antonio Lighthouse for the Blind Top agencies DLA (Defense Logistics Agency)	$11,040,241	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
66	Standard Calibrations Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$11,008,030	0.3%	Rank history: not on the FY2021–FY2023 lists and #97 in FY2024; up 31 since FY2024.
67	General Electric Company 9 awardees, including GE Aviation Systems LLC, Reuter-Stokes, LLC and Unison Industries LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$10,800,927	0.3%	Rank history: #99 in FY2021, #51 in FY2022, #93 in FY2023 and not on the FY2024 list; up 106 since FY2024.
68	Integrated Procurement Technologies Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$10,458,931	0.3%	Rank history: not on the FY2021–FY2024 lists; up 62 since FY2024.
69	Vaisala Inc. Top agencies Commerce (Department of Commerce) USAF (Department of the Air Force) Army (Department of the Army)	$10,438,239	0.3%	Rank history: not on the FY2021–FY2023 lists and #43 in FY2024; down 26 since FY2024.
70	Mountain Horse LLC Top agencies Army (Department of the Army) DFAS (Defense Finance and Accounting Service) USAF (Department of the Air Force)	$10,349,703	0.3%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2024; down 51 since FY2024.
71	Lovell Government Services Inc. Top agencies DLA (Defense Logistics Agency)	$10,156,074	0.3%	Rank history: not on the FY2021–FY2024 lists; up 60 since FY2024.
72	Rohde & Schwarz GMBH & Co. KG Through Rohde & Schwarz Usa, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Commerce (Department of Commerce)	$9,903,707	0.3%	Rank history: #58 in FY2021, #49 in FY2022, #39 in FY2023 and #58 in FY2024; down 14 since FY2024.
73	Bruker Corporation 4 awardees, including Bruker Scientific LLC, Bruker Detection Corp and Bruker Biospin Corp Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) Commerce (Department of Commerce)	$9,898,136	0.3%	Rank history: #65 in FY2021, #74 in FY2022, #43 in FY2023 and #31 in FY2024; down 42 since FY2024.
74	Olympus America Inc Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$9,753,139	0.3%	Rank history: not on the FY2021–FY2024 lists; up 70 since FY2024.
75	W S Darley & Co Top agencies DFAS (Defense Finance and Accounting Service) Army (Department of the Army)	$9,587,285	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
76	Medtronic Public Limited Company 4 awardees, including Medtronic USA Inc., Medtronic Inc. and Covidien Sales LLC Top agencies DLA (Defense Logistics Agency) VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$9,489,177	0.2%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023 and #63 in FY2024; down 13 since FY2024.
77	Federal Resources Supply Company, LLC Top agencies DOS (Department of State) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$9,483,956	0.2%	Rank history: not on the FY2021–FY2023 lists and #11 in FY2024; down 66 since FY2024.
78	Atap Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$9,242,442	0.2%	Rank history: not on the FY2021–FY2024 lists; up 51 since FY2024.
79	OTT Hydromet Corp Top agencies DOI (Department of the Interior) USDA (Department of Agriculture) Commerce (Department of Commerce)	$8,910,516	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
80	Benco Dental Supply Co. Top agencies DLA (Defense Logistics Agency)	$8,843,834	0.2%	Rank history: #81 in FY2021, #68 in FY2022, #82 in FY2023 and #76 in FY2024; down 4 since FY2024.
81	Keysight Technologies, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$8,222,302	0.2%	Rank history: #70 in FY2021, #59 in FY2022, #35 in FY2023 and #38 in FY2024; down 43 since FY2024.
82	Berkshire Hathaway Inc. 3 awardees, including Kitco Fiber Optics Inc., Frasca International, Inc. and Berkshire Production Supply LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) DOT (Department of Transportation)	$7,870,554	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
83	Buffalo Supply Inc. Top agencies DLA (Defense Logistics Agency)	$7,809,439	0.2%	Rank history: not on the FY2021 list, #88 in FY2022, #100 in FY2023 and #80 in FY2024; down 3 since FY2024.
84	Indal Technologies Inc 3 awardees, including Curtiss-Wright DS, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$7,770,077	0.2%	Rank history: not on the FY2021–FY2023 lists and #93 in FY2024; up 9 since FY2024.
85	Veterans Healthcare Supply Solutions, Inc. Top agencies DLA (Defense Logistics Agency) VA (Department of Veterans Affairs)	$7,693,821	0.2%	Rank history: not on the FY2021–FY2024 lists; up 277 since FY2024.
86	Dental Health Products Incorporated Top agencies DLA (Defense Logistics Agency)	$7,550,648	0.2%	Rank history: #75 in FY2021, #85 in FY2022, #91 in FY2023 and #78 in FY2024; down 8 since FY2024.
87	Meggitt Aerospace Limited 7 awardees, including Parker-Hannifin Corporation, Meggitt Aircraft Braking Systems Corporation and Meggitt Defense Systems, Inc. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$7,458,502	0.2%	Rank history: not on the FY2021–FY2024 lists; up 17 since FY2024.
88	The Charles Stark Draper Laboratory, Inc. Top agencies Navy (Department of the Navy)	$7,381,937	0.2%	Rank history: not on the FY2021–FY2024 lists; up 17 since FY2024.
89	NDT Solutions, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$7,289,402	0.2%	Rank history: not on the FY2021–FY2023 lists and #75 in FY2024; down 14 since FY2024.
90	GTA Containers, LLC Top agencies Army (Department of the Army)	$7,260,231	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
91	Werfen USA LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$7,247,840	0.2%	Rank history: not on the FY2021–FY2024 lists; up 155 since FY2024.
92	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$6,995,196	0.2%	Rank history: #96 in FY2021 and not on the FY2022–FY2024 lists; up 28 since FY2024.
93	Kitco LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$6,982,731	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
94	Thomas Scientific, LLC Top agencies DLA (Defense Logistics Agency) VA (Department of Veterans Affairs) DOJ (Department of Justice)	$6,838,993	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
95	Jamaica Bearings Co., Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$6,764,422	0.2%	Rank history: not on the FY2021–FY2024 lists; up 38 since FY2024.
96	Rhinestahl Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$6,743,774	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
97	4 D Technology Corporation 2 awardees, including Nanometrics Inc. Top agencies DOI (Department of the Interior) USAF (Department of the Air Force) Navy (Department of the Navy)	$6,717,908	0.2%	Rank history: not on the FY2021 list, #99 in FY2022 and not on the FY2023–FY2024 lists; up 44 since FY2024.
98	V.j. Technologies, Inc. Top agencies Army (Department of the Army)	$6,480,515	0.2%	Rank history: not on the FY2021–FY2024 lists; up 257 since FY2024.
99	Emerson Electric Co 3 awardees, including National Instruments Corp, Flexim Americas Corporation and Micro Motion, Inc. Top agencies Navy (Department of the Navy)	$6,407,443	0.2%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2024; down 74 since FY2024.
100	Teradyne Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$6,375,290	0.2%	Rank history: not on the FY2021–FY2022 lists, #80 in FY2023 and #59 in FY2024; down 41 since FY2024.

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100 of 3,617 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC 66

Code	Net obligations	Largest contractor
6640 Laboratory Equipment and Supplies	$1,332,645,711	Government Scientific Source Inc.
6625 Electrical and Electronic Properties Measuring and Testing Instruments	$453,369,878	Lockheed Martin Corporation
6605 Navigational Instruments	$343,201,521	Honeywell International Inc.
6665 Hazard-Detecting Instruments and Apparatus	$330,382,834	Rapiscan Systems Inc
6630 Chemical Analysis Instruments	$212,962,568	D-2 Incorporated
6610 Flight Instruments	$154,416,923	Southwest Research Institute
6685 Pressure, Temperature, and Humidity Measuring and Controlling Instruments	$141,909,267	Rolls-Royce Solutions America Inc.
6650 Optical Instruments, Test Equipment, Components and Accessories	$128,873,832	RTX Corporation
6695 Combination and Miscellaneous Instruments	$124,453,917	Sustainable System Solutions LLC
6680 Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments	$113,962,576	Standard Calibrations Inc.
6635 Physical Properties Testing and Inspection	$68,419,273	NDT Solutions, LLC
6615 Automatic Pilot Mechanisms and Airborne Gyro Components	$67,983,487	Canadian Commercial Corporation
6620 Engine Instruments	$47,135,694	Honeywell International Inc.
6660 Meteorological Instruments and Apparatus	$42,357,626	Vaisala Inc.
6636 Environmental Chambers and Related Equipment	$17,574,767	Cedarville Engineering Group LLC
6655 Geophysical Instruments	$16,491,658	4 D Technology Corporation
6675 Drafting, Surveying, and Mapping Instruments	$14,920,920	Red Canyon Perikin JV, LLC
6670 Scales and Balances	$14,370,826	Intercomp Co
6632 Analysis Instruments, Medical Laboratory Use	$12,963,867	Sysmex America Inc.
6645 Time Measuring Instruments	$10,542,361	Marathon Watch Company Ltd

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 $3.83 billion 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 2025 ran Oct 1, 2024 – Sep 30, 2025. 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 FY2024. "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 FY2024 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 66 contractors in FY2025?

1. Honeywell International Inc. ($134M), 2. Lockheed Martin Corporation ($117M), 3. Government Scientific Source Inc. ($113M), 4. Rapiscan Systems Inc ($74.3M), 5. BAE Systems ($72M), 6. Abbott Laboratories Inc. ($71.7M), 7. PPD Development LP ($71.6M), 8. L3Harris Technologies, Inc. ($70.4M), 9. RTX Corporation ($68.1M), 10. Northrop Grumman Corporation ($67.6M).

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