Top 100 Contractors in PSC 6635: Physical Properties Testing and Inspection, Jul 2025–Jun 2026

Name: Top 100 Contractors in PSC 6635: Physical Properties Testing and Inspection, 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 51% of PSC 6635 contract dollars from July 2025 through June 2026

Contract obligations: $57,566,262 Net of deobligations, by contracts coded PSC 6635
Contractors: 244 Parent companies with an obligation
Largest contractor: NDT Solutions, LLC $5.31 million, 9.0% 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	NDT Solutions, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DOT (Department of Transportation)	$5,314,769	9.0%	Rank history: not on the FY2021 list, #99 in FY2022, not on the FY2023 list, #2 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2	D-2 Incorporated Top agencies Navy (Department of the Navy) Army (Department of the Army)	$4,849,701	8.2%	Rank history: not on the FY2021–FY2023 lists, #1 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
3	Leidos Holdings, Inc. Through Leidos, Inc. Top agencies DHS (Department of Homeland Security)	$3,879,242	6.5%	Rank history: #3 in FY2021, #2 in FY2022, #62 in FY2023 and not on the FY2024–FY2025 lists; up 185 since Jul 2024–Jun 2025.
4	Atap Inc. Top agencies USAF (Department of the Air Force)	$2,619,888	4.4%	Rank history: not on the FY2021–FY2024 lists and #6 in FY2025; up 149 since Jul 2024–Jun 2025.
5	Habco Industries LLC Top agencies Navy (Department of the Navy)	$2,326,900	3.9%	Rank history: not on the FY2021–FY2024 lists and #7 in FY2025; new, not ranked in Jul 2024–Jun 2025.
6	Agilent Technologies, Inc. Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$2,323,660	3.9%	Rank history: not on the FY2021–FY2023 lists, #68 in FY2024 and #8 in FY2025; new, not ranked in Jul 2024–Jun 2025.
7	Jess W. Jackson and Associates, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,296,272	3.9%	Rank history: #7 in FY2021, #5 in FY2022, #11 in FY2023, #10 in FY2024 and #5 in FY2025; unchanged since Jul 2024–Jun 2025.
8	Leica Geosystems Inc. Through Hexagon Manufacturing Intelligence, LLC Top agencies Navy (Department of the Navy)	$2,268,622	3.8%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
9	Viken Detection Corporation Top agencies DOS (Department of State) DHS (Department of Homeland Security)	$2,227,180	3.8%	Rank history: #15 in FY2021, #12 in FY2022, not on the FY2023 list, #20 in FY2024 and #10 in FY2025; up 29 since Jul 2024–Jun 2025.
10	Illinois Tool Works Inc. 3 awardees, including QSA Global Inc. and North Star Imaging Incorporated Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$2,131,549	3.6%	Rank history: #35 in FY2021, #11 in FY2022, #7 in FY2023, #3 in FY2024 and #4 in FY2025; down 7 since Jul 2024–Jun 2025.
11	Wabtec Inspection Technologies, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$1,797,827	3.0%	Rank history: not on the FY2021–FY2023 lists, #14 in FY2024 and #9 in FY2025; up 3 since Jul 2024–Jun 2025.
12	Hadland Imaging LLC Top agencies USAF (Department of the Air Force)	$1,497,296	2.5%	Rank history: not on the FY2021–FY2023 lists, #4 in FY2024 and #3 in FY2025; down 10 since Jul 2024–Jun 2025.
13	Federal Resources Supply Company, LLC Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) USAF (Department of the Air Force)	$1,446,630	2.4%	Rank history: not on the FY2021–FY2023 lists, #11 in FY2024 and #12 in FY2025; down 3 since Jul 2024–Jun 2025.
14	Soluna Holdings Inc. Through MTI Instruments Inc. Top agencies USAF (Department of the Air Force)	$1,375,556	2.3%	Rank history: not on the FY2021–FY2024 lists and #15 in FY2025; up 15 since Jul 2024–Jun 2025.
15	L3Harris Technologies, Inc. Through Fisica Applied Technologies, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$1,067,864	1.8%	Rank history: #14 in FY2021, #37 in FY2022, #12 in FY2023, #6 in FY2024 and #11 in FY2025; down 7 since Jul 2024–Jun 2025.
16	Expotech U.s.a., Inc. Top agencies DLA (Defense Logistics Agency)	$824,620	1.4%	Rank history: #30 in FY2021, #23 in FY2022, #58 in FY2023, #8 in FY2024 and #20 in FY2025; down 1 since Jul 2024–Jun 2025.
17	United Western Technologies Corp. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$773,786	1.3%	Rank history: #61 in FY2021, #58 in FY2022, #9 in FY2023, #21 in FY2024 and #16 in FY2025; up 1 since Jul 2024–Jun 2025.
18	Waygate Technologies USA LP Top agencies NASA (National Aeronautics and Space Administration)	$695,357	1.2%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; up 256 since Jul 2024–Jun 2025.
19	V.j. Technologies, Inc. Top agencies Army (Department of the Army)	$634,117	1.1%	Rank history: #6 in FY2021, #53 in FY2022, #6 in FY2023, #12 in FY2024 and #2 in FY2025; down 15 since Jul 2024–Jun 2025.
20	Martin Military Inc. Top agencies DLA (Defense Logistics Agency)	$625,221	1.1%	Rank history: not on the FY2021–FY2023 lists, #57 in FY2024 and #26 in FY2025; up 19 since Jul 2024–Jun 2025.
21	PPD Development LP 2 awardees, including Thermo Electron North America LLC and Thermo Scientific Portable Analytical Instruments Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$563,958	1.0%	Rank history: not on the FY2021–FY2024 lists and #24 in FY2025; up 133 since Jul 2024–Jun 2025.
22	Gaffel Equipment Top agencies Navy (Department of the Navy)	$521,600	0.9%	Rank history: not on the FY2021 list, #36 in FY2022, not on the FY2023 list, #15 in FY2024 and not on the FY2025 list; unchanged since Jul 2024–Jun 2025.
23	Lafayette Instrument Company, LLC Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$460,978	0.8%	Rank history: #50 in FY2021, not on the FY2022–FY2024 lists and #22 in FY2025; up 1 since Jul 2024–Jun 2025.
24	Bruker AXS LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$442,698	0.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
25	Newco Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$434,336	0.7%	Rank history: #31 in FY2021, #6 in FY2022, #28 in FY2023, #24 in FY2024 and #25 in FY2025; down 4 since Jul 2024–Jun 2025.
26	Malvern Panalytical Inc. Top agencies DHS (Department of Homeland Security)	$408,211	0.7%	Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; up 121 since Jul 2024–Jun 2025.
27	Rapiscan Systems Inc Top agencies USAF (Department of the Air Force) USDA (Department of Agriculture) DLA (Defense Logistics Agency)	$406,125	0.7%	Rank history: not on the FY2021–FY2024 lists and #23 in FY2025; down 7 since Jul 2024–Jun 2025.
28	PH Tool, LLC Top agencies Navy (Department of the Navy)	$389,039	0.7%	Rank history: not on the FY2021–FY2023 lists, #36 in FY2024 and #31 in FY2025; up 6 since Jul 2024–Jun 2025.
29	Mystaire Inc Top agencies DHS (Department of Homeland Security)	$363,616	0.6%	Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; new, not ranked in Jul 2024–Jun 2025.
30	B & H International LLC Top agencies Navy (Department of the Navy)	$361,655	0.6%	Rank history: not on the FY2021–FY2023 lists, #25 in FY2024 and #85 in FY2025; down 4 since Jul 2024–Jun 2025.
31	Fairwinds Technologies LLC Top agencies Navy (Department of the Navy)	$314,264	0.5%	Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; new, not ranked in Jul 2024–Jun 2025.
32	Flawtech America, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$302,607	0.5%	Rank history: not on the FY2021–FY2024 lists and #27 in FY2025; up 24 since Jul 2024–Jun 2025.
33	Lake Shore Cryotronics, Inc. Top agencies Navy (Department of the Navy)	$290,848	0.5%	Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; new, not ranked in Jul 2024–Jun 2025.
34	Astrophysics Inc. Top agencies USAF (Department of the Air Force)	$288,581	0.5%	Rank history: #40 in FY2021, #94 in FY2022, #20 in FY2023, #53 in FY2024 and #40 in FY2025; up 19 since Jul 2024–Jun 2025.
35	Statz Corp Top agencies DLA (Defense Logistics Agency)	$272,407	0.5%	Rank history: not on the FY2021–FY2023 lists, #70 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
36	E & S Industriebedarf GMBH Top agencies Army (Department of the Army)	$257,325	0.4%	Rank history: not on the FY2021–FY2024 lists and #41 in FY2025; new, not ranked in Jul 2024–Jun 2025.
37	Safety & Security International, Inc. Top agencies Navy (Department of the Navy)	$256,575	0.4%	Rank history: not on the FY2021–FY2023 lists, #64 in FY2024 and not on the FY2025 list; up 124 since Jul 2024–Jun 2025.
38	Aerofab NDT LLC Top agencies USAF (Department of the Air Force)	$250,856	0.4%	Rank history: not on the FY2021–FY2023 lists, #71 in FY2024 and #37 in FY2025; down 1 since Jul 2024–Jun 2025.
39	Leco Corp Top agencies Navy (Department of the Navy)	$249,999	0.4%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2023, not on the FY2024 list and #43 in FY2025; new, not ranked in Jul 2024–Jun 2025.
40	Admet, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$249,231	0.4%	Rank history: not on the FY2021–FY2022 lists, #71 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
41	TSI Incorporated Top agencies Navy (Department of the Navy)	$241,456	0.4%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; up 88 since Jul 2024–Jun 2025.
42	Cenmed Enterprises Inc. Top agencies DLA (Defense Logistics Agency)	$230,900	0.4%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; up 101 since Jul 2024–Jun 2025.
43	The Red List Group. Llc Top agencies Navy (Department of the Navy)	$219,400	0.4%	Rank history: not on the FY2021–FY2025 lists; up 92 since Jul 2024–Jun 2025.
44	Idsc Holdings LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$213,591	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
45	Rohde & Schwarz Usa, Inc. Top agencies Navy (Department of the Navy)	$212,780	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
46	Horizon 66 B V Top agencies DTRA (Defense Threat Reduction Agency)	$207,707	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
47	Par Defense Industries, LLC Top agencies DLA (Defense Logistics Agency)	$190,189	0.3%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; up 48 since Jul 2024–Jun 2025.
48	Hyspex Inc. Top agencies Treasury (Department of the Treasury)	$186,365	0.3%	Rank history: not on the FY2021–FY2024 lists and #56 in FY2025; new, not ranked in Jul 2024–Jun 2025.
49	Halliday Technologies Inc. Top agencies USAF (Department of the Air Force)	$183,133	0.3%	Rank history: not on the FY2021–FY2024 lists and #70 in FY2025; up 60 since Jul 2024–Jun 2025.
50	K5 Defense LLC Top agencies DHS (Department of Homeland Security)	$182,832	0.3%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; up 143 since Jul 2024–Jun 2025.
51	Midway Industrial Supply Inc. Top agencies DLA (Defense Logistics Agency)	$177,979	0.3%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; up 32 since Jul 2024–Jun 2025.
52	MPM Products, Inc. Top agencies Navy (Department of the Navy)	$174,881	0.3%	Rank history: not on the FY2021–FY2022 lists, #18 in FY2023, #45 in FY2024 and #36 in FY2025; up 15 since Jul 2024–Jun 2025.
53	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency)	$171,755	0.3%	Rank history: #96 in FY2021, #97 in FY2022, #77 in FY2023 and not on the FY2024–FY2025 lists; up 48 since Jul 2024–Jun 2025.
54	Plastometrex Usa, Inc. Top agencies Navy (Department of the Navy)	$160,187	0.3%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; new, not ranked in Jul 2024–Jun 2025.
55	Global Logistics Strategies Inc. Top agencies DLA (Defense Logistics Agency)	$155,728	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
56	Government Scientific Source Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$152,477	0.3%	Rank history: #29 in FY2021, #52 in FY2022, #17 in FY2023, #16 in FY2024 and #64 in FY2025; down 23 since Jul 2024–Jun 2025.
57	Opti Manufacturing Corporation Top agencies DLA (Defense Logistics Agency)	$150,595	0.3%	Rank history: #51 in FY2021, #57 in FY2022, not on the FY2023 list, #49 in FY2024 and #80 in FY2025; up 21 since Jul 2024–Jun 2025.
58	Larkos Packing and Distribution Inc. Top agencies DLA (Defense Logistics Agency)	$148,005	0.2%	Rank history: not on the FY2021–FY2024 lists and #93 in FY2025; up 41 since Jul 2024–Jun 2025.
59	Advanced Navigation Pty. Ltd. Top agencies Navy (Department of the Navy)	$146,416	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
60	Varex Imaging Corp Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$146,353	0.2%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; down 3 since Jul 2024–Jun 2025.
61	Foster & Freeman USA Inc. Top agencies DHS (Department of Homeland Security)	$139,004	0.2%	Rank history: not on the FY2021–FY2024 lists and #72 in FY2025; new, not ranked in Jul 2024–Jun 2025.
62	Fisher Scientific Company L.L.C. Top agencies GSA (General Services Administration) VA (Department of Veterans Affairs)	$134,253	0.2%	Rank history: not on the FY2021–FY2023 lists, #100 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
63	Vcloud GOV Inc. Top agencies Navy (Department of the Navy)	$132,621	0.2%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; new, not ranked in Jul 2024–Jun 2025.
64	Smiths Detection Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$125,170	0.2%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; up 77 since Jul 2024–Jun 2025.
65	Cap 360 LLC Top agencies DLA (Defense Logistics Agency)	$123,123	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
66	S & K Federal Services LLC Top agencies USAF (Department of the Air Force)	$123,090	0.2%	Rank history: not on the FY2021–FY2024 lists and #82 in FY2025; new, not ranked in Jul 2024–Jun 2025.
67	Tevet LLC Top agencies Treasury (Department of the Treasury)	$121,550	0.2%	Rank history: not on the FY2021–FY2022 lists, #95 in FY2023 and not on the FY2024–FY2025 lists; up 47 since Jul 2024–Jun 2025.
68	Productivity Quality Inc. Top agencies Army (Department of the Army)	$120,821	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
69	Luna Labs USA LLC Top agencies Navy (Department of the Navy)	$118,584	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
70	S I T Corporation Top agencies DLA (Defense Logistics Agency)	$114,531	0.2%	Rank history: #39 in FY2021, not on the FY2022–FY2024 lists and #66 in FY2025; down 9 since Jul 2024–Jun 2025.
71	American Crane & Equipment Corp Top agencies Navy (Department of the Navy)	$109,938	0.2%	Rank history: not on the FY2021 list, #66 in FY2022, #52 in FY2023, not on the FY2024 list and #87 in FY2025; new, not ranked in Jul 2024–Jun 2025.
72	Executive Business Services Inc. 2 awardees, including Struers Inc. and Zetec Inc. Top agencies Navy (Department of the Navy)	$108,940	0.2%	Rank history: not on the FY2021–FY2023 lists, #29 in FY2024 and #74 in FY2025; down 47 since Jul 2024–Jun 2025.
73	Psylotech, Inc. Top agencies Navy (Department of the Navy)	$104,079	0.2%	Rank history: not on the FY2021–FY2024 lists and #33 in FY2025; down 30 since Jul 2024–Jun 2025.
74	Dataphysics Instruments USA Corp. Top agencies Treasury (Department of the Treasury)	$102,574	0.2%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; new, not ranked in Jul 2024–Jun 2025.
75	Samyak Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$101,186	0.2%	Rank history: not on the FY2021–FY2022 lists, #65 in FY2023, #31 in FY2024 and not on the FY2025 list; down 43 since Jul 2024–Jun 2025.
76	Phoenix Trading Inc. Top agencies DLA (Defense Logistics Agency)	$101,160	0.2%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; up 11 since Jul 2024–Jun 2025.
77	Raysecur Inc. Top agencies Army (Department of the Army)	$101,105	0.2%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; new, not ranked in Jul 2024–Jun 2025.
78	Kerley Corporation Top agencies Navy (Department of the Navy)	$101,050	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
79	U S Analytical Solutions LLC Top agencies USAF (Department of the Air Force)	$99,119	0.2%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; new, not ranked in Jul 2024–Jun 2025.
80	Willrich Precision Instrument Company, Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$98,854	0.2%	Rank history: not on the FY2021 list, #42 in FY2022, #16 in FY2023, #23 in FY2024 and #79 in FY2025; up 72 since Jul 2024–Jun 2025.
81	Ametek Inc. Through Taylor Hobson Inc. Top agencies USAF (Department of the Air Force)	$98,449	0.2%	Rank history: #47 in FY2021, #39 in FY2022, #78 in FY2023, #22 in FY2024 and #51 in FY2025; down 29 since Jul 2024–Jun 2025.
82	Rev-Cap Company, Inc. Top agencies DLA (Defense Logistics Agency)	$96,780	0.2%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; down 52 since Jul 2024–Jun 2025.
83	Jag Components, LLC Top agencies DLA (Defense Logistics Agency)	$89,070	0.2%	Rank history: not on the FY2021 list, #72 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
84	Utech Products Inc. Top agencies Navy (Department of the Navy)	$88,405	0.1%	Rank history: not on the FY2021 list, #78 in FY2022 and not on the FY2023–FY2025 lists; up 62 since Jul 2024–Jun 2025.
85	Govstrat Solutions, Inc. Top agencies DHS (Department of Homeland Security)	$84,122	0.1%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; new, not ranked in Jul 2024–Jun 2025.
86	Tovey Engineering, Inc. Top agencies USAF (Department of the Air Force)	$83,140	0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; up 35 since Jul 2024–Jun 2025.
87	A.k.o. Inc. Top agencies Navy (Department of the Navy)	$81,760	0.1%	Rank history: not on the FY2021 list, #48 in FY2022, #38 in FY2023, #26 in FY2024 and #19 in FY2025; down 70 since Jul 2024–Jun 2025.
88	Amphenol Corporation Through PCB Piezotronics, Inc. Top agencies Navy (Department of the Navy)	$79,029	0.1%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; up 18 since Jul 2024–Jun 2025.
89	Veyka Insaat Mimarlik Muhendislik Sanayi IC VE Dis Ticaret Anonim Sirketi Top agencies DOS (Department of State)	$78,775	0.1%	Rank history: not on the FY2021–FY2024 lists and #98 in FY2025; new, not ranked in Jul 2024–Jun 2025.
90	Technical Services Group, Inc. Top agencies USAF (Department of the Air Force)	$78,200	0.1%	Rank history: not on the FY2021–FY2025 lists; up 130 since Jul 2024–Jun 2025.
91	Innovatest USA Co Top agencies Navy (Department of the Navy)	$77,599	0.1%	Rank history: not on the FY2021 list, #85 in FY2022, not on the FY2023–FY2024 lists and #59 in FY2025; down 1 since Jul 2024–Jun 2025.
92	Tinius Olsen Testing Machine Co Inc Top agencies Army (Department of the Army) Treasury (Department of the Treasury)	$76,825	0.1%	Rank history: not on the FY2021–FY2024 lists and #71 in FY2025; up 30 since Jul 2024–Jun 2025.
93	The Boeing Company Top agencies DLA (Defense Logistics Agency)	$76,527	0.1%	Rank history: #8 in FY2021, #25 in FY2022, not on the FY2023 list, #82 in FY2024 and #100 in FY2025; down 5 since Jul 2024–Jun 2025.
94	AIT Products LLC Top agencies Navy (Department of the Navy)	$75,808	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
95	Sciaps, Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$68,693	0.1%	Rank history: not on the FY2021–FY2023 lists, #84 in FY2024 and not on the FY2025 list; down 19 since Jul 2024–Jun 2025.
96	Gamry Instruments, Inc. Top agencies Navy (Department of the Navy)	$66,748	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
97	Advanced Testing Services, Inc. Top agencies Navy (Department of the Navy)	$66,719	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
98	NDT Supply.com, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$60,941	0.1%	Rank history: #54 in FY2021, not on the FY2022–FY2024 lists and #99 in FY2025; up 25 since Jul 2024–Jun 2025.
99	Scireq Scientific Respiratory Equipment Inc. Top agencies Navy (Department of the Navy)	$59,944	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
100	Scribner, LLC Top agencies Navy (Department of the Navy)	$58,958	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.

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100 of 244 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 $59.4 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 6635 contractors in Jul 2025–Jun 2026?

1. NDT Solutions, LLC ($5.31M), 2. D-2 Incorporated ($4.85M), 3. Leidos Holdings, Inc. ($3.88M), 4. Atap Inc. ($2.62M), 5. Habco Industries LLC ($2.33M), 6. Agilent Technologies, Inc. ($2.32M), 7. Jess W. Jackson and Associates, Inc. ($2.3M), 8. Leica Geosystems Inc. ($2.27M), 9. Viken Detection Corporation ($2.23M), 10. Illinois Tool Works Inc. ($2.13M).

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