Top 100 Contractors in PSC 6695: Combination and Miscellaneous Instruments, Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Safety Technology Holdings Inc. Through Humanetics Innovative Solutions, Inc. Top agencies DOT (Department of Transportation) Army (Department of the Army)	$5,858,687	6.1%	Rank history: not on the FY2021–FY2023 lists, #4 in FY2024 and #3 in FY2025; up 6 since Aug 2024–Jul 2025.
2	YSI Inc. Top agencies DOI (Department of the Interior) Commerce (Department of Commerce)	$5,013,829	5.2%	Rank history: not on the FY2021 list, #50 in FY2022, not on the FY2023 list, #16 in FY2024 and #4 in FY2025; up 2 since Aug 2024–Jul 2025.
3	OTT Hydromet Corp Top agencies DOI (Department of the Interior)	$4,823,042	5.0%	Rank history: not on the FY2021–FY2024 lists and #2 in FY2025; unchanged since Aug 2024–Jul 2025.
4	Ruta Supplies Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$3,223,166	3.4%	Rank history: #49 in FY2021, #36 in FY2022, #6 in FY2023, #40 in FY2024 and #18 in FY2025; up 17 since Aug 2024–Jul 2025.
5	Parker-Hannifin Corporation 4 awardees, including Meggitt Aircraft Braking Systems Corporation and Meggitt (Orange County), Inc. Top agencies DLA (Defense Logistics Agency)	$2,952,575	3.1%	Rank history: #11 in FY2021, #14 in FY2022, #12 in FY2023, #14 in FY2024 and #7 in FY2025; up 9 since Aug 2024–Jul 2025.
6	Teledyne Flir Unmanned Ground Systems Inc 2 awardees, including Teledyne Instruments, Inc. and Teledyne Brown Engineering, Inc. Top agencies DOI (Department of the Interior) USAF (Department of the Air Force)	$2,747,373	2.9%	Rank history: #7 in FY2021, #9 in FY2022, #5 in FY2023, #27 in FY2024 and #12 in FY2025; up 18 since Aug 2024–Jul 2025.
7	University of Alaska Systems Through University of Alaska Fairbanks Top agencies NASA (National Aeronautics and Space Administration)	$2,734,499	2.8%	Rank history: #6 in FY2021, #16 in FY2022, #9 in FY2023, #9 in FY2024 and #9 in FY2025; up 139 since Aug 2024–Jul 2025.
8	RTX Corporation 8 awardees, including Hamilton Sundstrand Corporation, Simmonds Precision Products Inc. and Intertrade Limited Top agencies DLA (Defense Logistics Agency) NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$2,454,203	2.6%	Rank history: #34 in FY2021, #6 in FY2022, #33 in FY2023, #3 in FY2024 and #14 in FY2025; up 20 since Aug 2024–Jul 2025.
9	Fairwinds Technologies LLC Top agencies DHS (Department of Homeland Security)	$2,207,396	2.3%	Rank history: not on the FY2021–FY2025 lists; up 112 since Aug 2024–Jul 2025.
10	Kitco LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$1,920,600	2.0%	Rank history: not on the FY2021–FY2024 lists and #16 in FY2025; up 13 since Aug 2024–Jul 2025.
11	Atlantic Diving Supply, Inc. Top agencies DFAS (Defense Finance and Accounting Service) DLA (Defense Logistics Agency) Army (Department of the Army)	$1,900,378	2.0%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #15 in FY2025; up 35 since Aug 2024–Jul 2025.
12	Transaero, Inc. Top agencies DLA (Defense Logistics Agency)	$1,899,266	2.0%	Rank history: #13 in FY2021, #13 in FY2022, #23 in FY2023, #21 in FY2024 and #17 in FY2025; unchanged since Aug 2024–Jul 2025.
13	Mason Electric Co. 2 awardees, including King Nutronics Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,876,847	2.0%	Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; up 41 since Aug 2024–Jul 2025.
14	ECI Defense Group, Inc. 2 awardees Top agencies DLA (Defense Logistics Agency) NASA (National Aeronautics and Space Administration)	$1,845,566	1.9%	Rank history: #24 in FY2021, #53 in FY2022, #64 in FY2023, #88 in FY2024 and #39 in FY2025; up 33 since Aug 2024–Jul 2025.
15	Compuflow Solutions LLC Top agencies USAF (Department of the Air Force)	$1,796,615	1.9%	Rank history: not on the FY2021–FY2024 lists and #21 in FY2025; new, not ranked in Aug 2024–Jul 2025.
16	Heico Corp 2 awardees, including Pioneer Industries, LLC and Seal Dynamics LLC Top agencies DLA (Defense Logistics Agency)	$1,584,634	1.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
17	BAE Systems 2 awardees, including BAE Systems Controls Inc. and BAE Systems Information & Electronic Systems Integration Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$1,550,933	1.6%	Rank history: not on the FY2021–FY2024 lists and #51 in FY2025; new, not ranked in Aug 2024–Jul 2025.
18	Danaher Corporation Through Hach Company Top agencies DOI (Department of the Interior)	$1,467,579	1.5%	Rank history: #2 in FY2021, #3 in FY2022, #2 in FY2023, #6 in FY2024 and #20 in FY2025; up 1 since Aug 2024–Jul 2025.
19	Campbell Scientific Inc. Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$1,376,112	1.4%	Rank history: #25 in FY2021, #41 in FY2022, #20 in FY2023, #33 in FY2024 and #27 in FY2025; up 11 since Aug 2024–Jul 2025.
20	Kulite Semiconductor Products Inc. Top agencies DLA (Defense Logistics Agency)	$1,202,910	1.3%	Rank history: #9 in FY2021, #11 in FY2022, #15 in FY2023, #10 in FY2024 and #10 in FY2025; down 12 since Aug 2024–Jul 2025.
21	Roche Holdings Inc. Through Roche Diagnostics Corporation Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs)	$1,117,090	1.2%	Rank history: not on the FY2021–FY2024 lists and #30 in FY2025; up 11 since Aug 2024–Jul 2025.
22	Concepts Nrec, LLC Top agencies Army (Department of the Army)	$1,100,000	1.1%	Rank history: not on the FY2021–FY2022 lists, #13 in FY2023, #15 in FY2024 and #25 in FY2025; down 7 since Aug 2024–Jul 2025.
23	Southwest Research Institute Top agencies DLA (Defense Logistics Agency)	$1,096,430	1.1%	Rank history: not on the FY2021–FY2024 lists and #26 in FY2025; new, not ranked in Aug 2024–Jul 2025.
24	Sequoia Defense LLC Top agencies DLA (Defense Logistics Agency)	$1,017,383	1.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
25	Hydro-Aire Aerospace Corp Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,010,142	1.1%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; up 89 since Aug 2024–Jul 2025.
26	Integrated Procurement Technologies Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$945,785	1.0%	Rank history: not on the FY2021 list, #73 in FY2022, not on the FY2023–FY2024 lists and #31 in FY2025; new, not ranked in Aug 2024–Jul 2025.
27	AAR Corp. Through AAR Supply Chain, Inc. Top agencies DLA (Defense Logistics Agency)	$878,929	0.9%	Rank history: not on the FY2021–FY2023 lists, #74 in FY2024 and #28 in FY2025; up 7 since Aug 2024–Jul 2025.
28	Emerson Electric Co Through Rosemount Specialty Products LLC Top agencies DLA (Defense Logistics Agency)	$872,000	0.9%	Rank history: not on the FY2021 list, #19 in FY2022, not on the FY2023–FY2024 lists and #11 in FY2025; new, not ranked in Aug 2024–Jul 2025.
29	Quantum Opus LLC Top agencies USAF (Department of the Air Force)	$796,000	0.8%	Rank history: not on the FY2021–FY2024 lists and #37 in FY2025; new, not ranked in Aug 2024–Jul 2025.
30	S I T Corporation Top agencies DLA (Defense Logistics Agency)	$788,601	0.8%	Rank history: #44 in FY2021, #48 in FY2022, not on the FY2023 list, #54 in FY2024 and #54 in FY2025; up 27 since Aug 2024–Jul 2025.
31	Eaton Corporation Public Limited Company Through Eaton Aerospace LLC Top agencies DLA (Defense Logistics Agency)	$763,139	0.8%	Rank history: #8 in FY2021, not on the FY2022 list, #25 in FY2023, #20 in FY2024 and #22 in FY2025; down 11 since Aug 2024–Jul 2025.
32	FTS Forest Technology Systems Ltd. Top agencies DOI (Department of the Interior)	$726,413	0.8%	Rank history: #12 in FY2021, #99 in FY2022, not on the FY2023–FY2024 lists and #56 in FY2025; up 28 since Aug 2024–Jul 2025.
33	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$722,016	0.8%	Rank history: #93 in FY2021, not on the FY2022 list, #54 in FY2023, #34 in FY2024 and #36 in FY2025; up 5 since Aug 2024–Jul 2025.
34	General Electric Company 2 awardees Top agencies Navy (Department of the Navy)	$644,584	0.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
35	Moog Inc. Through Moog Military Aircraft LLC Top agencies Navy (Department of the Navy)	$563,311	0.6%	Rank history: #15 in FY2021, #26 in FY2022, #41 in FY2023, not on the FY2024 list and #43 in FY2025; new, not ranked in Aug 2024–Jul 2025.
36	Thales Defense & Security Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$559,441	0.6%	Rank history: not on the FY2021–FY2022 lists, #26 in FY2023, not on the FY2024 list and #33 in FY2025; down 3 since Aug 2024–Jul 2025.
37	Dynalec Corporation Top agencies Navy (Department of the Navy)	$536,933	0.6%	Rank history: not on the FY2021–FY2022 lists, #66 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
38	In-Situ, Inc. Top agencies DOI (Department of the Interior)	$493,299	0.5%	Rank history: #16 in FY2021, #24 in FY2022, #7 in FY2023, #30 in FY2024 and #23 in FY2025; down 9 since Aug 2024–Jul 2025.
39	Morehouse Instrument Company Top agencies Navy (Department of the Navy)	$464,160	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
40	Bahfed Corp Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$448,682	0.5%	Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; up 32 since Aug 2024–Jul 2025.
41	Integral Aerospace, LLC Top agencies DLA (Defense Logistics Agency)	$437,337	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
42	Standard Calibrations Inc. Top agencies DLA (Defense Logistics Agency)	$426,159	0.4%	Rank history: not on the FY2021–FY2023 lists, #61 in FY2024 and #49 in FY2025; up 6 since Aug 2024–Jul 2025.
43	MJL Enterprises, LLC Top agencies Army (Department of the Army)	$413,563	0.4%	Rank history: not on the FY2021–FY2023 lists, #13 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
44	San Antonio Lighthouse for the Blind Top agencies DLA (Defense Logistics Agency)	$409,226	0.4%	Rank history: #47 in FY2021, #44 in FY2022, #61 in FY2023, #86 in FY2024 and #34 in FY2025; down 9 since Aug 2024–Jul 2025.
45	Process Sensing Technologies Corp. Through Fluid Components International LLC Top agencies DLA (Defense Logistics Agency)	$405,384	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
46	Turbine Technics Inc. Top agencies DLA (Defense Logistics Agency)	$396,185	0.4%	Rank history: #71 in FY2021, #66 in FY2022, #49 in FY2023, #73 in FY2024 and #61 in FY2025; up 20 since Aug 2024–Jul 2025.
47	Feole Technologies Inc. Top agencies Navy (Department of the Navy)	$394,872	0.4%	Rank history: not on the FY2021–FY2023 lists, #97 in FY2024 and #40 in FY2025; up 4 since Aug 2024–Jul 2025.
48	Powerjet Parts Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$371,429	0.4%	Rank history: #81 in FY2021, not on the FY2022–FY2023 lists, #51 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
49	Dewesoft D.O.O. Through Dewesoft LLC Top agencies Army (Department of the Army)	$371,260	0.4%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; up 238 since Aug 2024–Jul 2025.
50	Ontic Engineering and Manufacturing Inc. 2 awardees, including Ontic Engineering & Manufacturing UK Limited Top agencies DLA (Defense Logistics Agency)	$369,294	0.4%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; up 112 since Aug 2024–Jul 2025.
51	John H Carter Co Inc. Through Controlworx, L.l.c Top agencies NASA (National Aeronautics and Space Administration)	$352,318	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
52	Rural Route 2, LLC Top agencies DLA (Defense Logistics Agency)	$348,263	0.4%	Rank history: not on the FY2021–FY2023 lists, #47 in FY2024 and #41 in FY2025; down 8 since Aug 2024–Jul 2025.
53	Apothem, Inc. Top agencies Navy (Department of the Navy)	$341,945	0.4%	Rank history: not on the FY2021–FY2024 lists and #55 in FY2025; new, not ranked in Aug 2024–Jul 2025.
54	Amalgamated Services Inc. Top agencies NASA (National Aeronautics and Space Administration)	$335,620	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
55	Treadwell Corporation (Delaware) Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$325,881	0.3%	Rank history: #59 in FY2021, #71 in FY2022, #87 in FY2023, #94 in FY2024 and #85 in FY2025; up 35 since Aug 2024–Jul 2025.
56	JH Acquisition, LLC Top agencies NASA (National Aeronautics and Space Administration)	$325,540	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
57	Stryker Corporation Through Howmedica Osteonics Corp Top agencies VA (Department of Veterans Affairs)	$311,438	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
58	SR Research Limited Top agencies Navy (Department of the Navy)	$300,060	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
59	Jasco Incorporated Top agencies NASA (National Aeronautics and Space Administration)	$286,582	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
60	Ideal Vacuum Products, LLC Top agencies NASA (National Aeronautics and Space Administration)	$279,143	0.3%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; up 209 since Aug 2024–Jul 2025.
61	Sentinel Aerospace, LLC Top agencies NASA (National Aeronautics and Space Administration)	$274,900	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
62	Efco USA Inc. Top agencies Navy (Department of the Navy)	$260,172	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
63	Kisters North America, Inc. Top agencies DOI (Department of the Interior)	$257,965	0.3%	Rank history: not on the FY2021–FY2023 lists, #17 in FY2024 and #77 in FY2025; down 47 since Aug 2024–Jul 2025.
64	Bruker Nano, Inc. Top agencies Navy (Department of the Navy)	$249,920	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
65	KLA Corporation Top agencies Navy (Department of the Navy)	$248,751	0.3%	Rank history: not on the FY2021–FY2024 lists and #70 in FY2025; new, not ranked in Aug 2024–Jul 2025.
66	Virtus 9 Corporation Top agencies DLA (Defense Logistics Agency)	$236,406	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
67	Robert E Mason & Associates Inc. Top agencies NASA (National Aeronautics and Space Administration)	$230,042	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
68	Precision Filters, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$228,968	0.2%	Rank history: not on the FY2021–FY2025 lists; up 131 since Aug 2024–Jul 2025.
69	Atec Inc. Top agencies DLA (Defense Logistics Agency)	$225,255	0.2%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; up 16 since Aug 2024–Jul 2025.
70	Phoenix Trading Inc. Top agencies DLA (Defense Logistics Agency)	$223,690	0.2%	Rank history: not on the FY2021–FY2025 lists; up 128 since Aug 2024–Jul 2025.
71	Kimball Physics Inc. Top agencies NASA (National Aeronautics and Space Administration)	$220,675	0.2%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; up 193 since Aug 2024–Jul 2025.
72	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$212,013	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
73	Allied Defense Industries, LLC Top agencies DLA (Defense Logistics Agency)	$211,467	0.2%	Rank history: not on the FY2021–FY2023 lists, #82 in FY2024 and #67 in FY2025; down 20 since Aug 2024–Jul 2025.
74	Hoffer Flow Controls Inc. Top agencies Navy (Department of the Navy)	$209,712	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
75	H C Merchandisers, Inc. Top agencies DLA (Defense Logistics Agency)	$204,558	0.2%	Rank history: not on the FY2021–FY2025 lists; down 14 since Aug 2024–Jul 2025.
76	Sargent Aerospace & Defense, LLC Top agencies DLA (Defense Logistics Agency)	$200,296	0.2%	Rank history: not on the FY2021–FY2024 lists and #82 in FY2025; up 11 since Aug 2024–Jul 2025.
77	L3Harris Technologies, Inc. 4 awardees, including L3Harris Maritime Services Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$198,484	0.2%	Rank history: #63 in FY2021, #37 in FY2022, not on the FY2023 list, #29 in FY2024 and #44 in FY2025; down 38 since Aug 2024–Jul 2025.
78	Vishay Precision Group, Inc. Through Diversified Technical Systems, Inc. Top agencies DOT (Department of Transportation)	$196,974	0.2%	Rank history: not on the FY2021 list, #23 in FY2022, #16 in FY2023, not on the FY2024 list and #73 in FY2025; up 164 since Aug 2024–Jul 2025.
79	Burhani Enterprises Inc. Top agencies DLA (Defense Logistics Agency)	$192,938	0.2%	Rank history: not on the FY2021–FY2023 lists, #90 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
80	Aero International, LLC Top agencies DLA (Defense Logistics Agency)	$186,738	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
81	Lockheed Martin Corporation 3 awardees, including Sikorsky Aircraft Corporation and Derco Aerospace, Inc. Top agencies DLA (Defense Logistics Agency)	$184,657	0.2%	Rank history: #69 in FY2021, #64 in FY2022, #79 in FY2023 and not on the FY2024–FY2025 lists; up 79 since Aug 2024–Jul 2025.
82	General Dynamics Corporation Through Electric Boat Corporation Top agencies Navy (Department of the Navy)	$183,750	0.2%	Rank history: #61 in FY2021, not on the FY2022 list, #14 in FY2023, #32 in FY2024 and #13 in FY2025; down 65 since Aug 2024–Jul 2025.
83	Euroamerica LLC Top agencies DOT (Department of Transportation)	$182,251	0.2%	Rank history: #22 in FY2021, not on the FY2022–FY2024 lists and #92 in FY2025; new, not ranked in Aug 2024–Jul 2025.
84	Fed Crew Inc. Top agencies Navy (Department of the Navy)	$179,142	0.2%	Rank history: not on the FY2021–FY2025 lists; up 112 since Aug 2024–Jul 2025.
85	Equinox Strategies LLC Top agencies USAF (Department of the Air Force)	$178,124	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
86	Appleton Marine Inc. Top agencies DHS (Department of Homeland Security)	$176,400	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
87	Telops Inc. Top agencies NASA (National Aeronautics and Space Administration)	$173,200	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
88	Technical Communities, Inc. Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$172,287	0.2%	Rank history: #37 in FY2021, not on the FY2022–FY2023 lists, #99 in FY2024 and #91 in FY2025; up 6 since Aug 2024–Jul 2025.
89	Daughtridge Sales Company, Inc. Top agencies DLA (Defense Logistics Agency)	$171,228	0.2%	Rank history: not on the FY2021–FY2025 lists; up 322 since Aug 2024–Jul 2025.
90	R & M Government Services Inc. Top agencies DLA (Defense Logistics Agency)	$168,466	0.2%	Rank history: #32 in FY2021, #46 in FY2022, #28 in FY2023, #59 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
91	Illinois Tool Works Inc. Through MTS Systems Corporation Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$163,230	0.2%	Rank history: not on the FY2021–FY2023 lists, #60 in FY2024 and #81 in FY2025; down 39 since Aug 2024–Jul 2025.
92	Airmo, Inc. Top agencies Navy (Department of the Navy)	$162,780	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
93	Callisto France Top agencies NASA (National Aeronautics and Space Administration)	$159,188	0.2%	Rank history: not on the FY2021–FY2024 lists and #96 in FY2025; new, not ranked in Aug 2024–Jul 2025.
94	Sonotec US Inc. Top agencies NASA (National Aeronautics and Space Administration)	$158,550	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
95	Aviarms Support Corp Top agencies DLA (Defense Logistics Agency)	$156,484	0.2%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; up 45 since Aug 2024–Jul 2025.
96	Columbia Research Laboratories, Inc. Top agencies DLA (Defense Logistics Agency)	$153,213	0.2%	Rank history: not on the FY2021–FY2022 lists, #40 in FY2023, #64 in FY2024 and #57 in FY2025; down 23 since Aug 2024–Jul 2025.
97	Zoller Inc. Top agencies USAF (Department of the Air Force)	$152,300	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
98	Fisher Scientific Company L.L.C. Top agencies NASA (National Aeronautics and Space Administration)	$151,264	0.2%	Rank history: not on the FY2021 list, #98 in FY2022, not on the FY2023 list, #96 in FY2024 and not on the FY2025 list; up 35 since Aug 2024–Jul 2025.
99	Crane Electronics Inc. Top agencies NASA (National Aeronautics and Space Administration)	$145,796	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
100	NOX Health Group, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$141,653	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.

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 $96 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