Top 100 Contractors in PSC 6635: Physical Properties Testing and Inspection, FY2023

Name: Top 100 Contractors in PSC 6635: Physical Properties Testing and Inspection, FY2023
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2022 – Sep 30, 2023 Code page on GovTribe

The top 10 won 62% of FY2023 PSC 6635 contract dollars

Contract obligations: $110,261,240 Net of deobligations, by contracts coded PSC 6635
Contractors: 307 Parent companies with an obligation
Largest contractor: Lockheed Martin Corporation $30.4 million, 26.9% 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	Lockheed Martin Corporation Top agencies Navy (Department of the Navy)	$30,367,251	26.9%	Rank history: #1 in FY2021, #1 in FY2022, #18 in FY2024 and not on the FY2025 list; unchanged since FY2022.
2	Olympus America Inc 2 awardees, including Wabtec Inspection Technologies, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$9,140,019	8.1%	Rank history: #2 in FY2021, #16 in FY2022, #37 in FY2024 and not on the FY2025 list; up 14 since FY2022.
3	Moog Inc. 3 awardees, including Quickset Defense Technologies LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$6,513,070	5.8%	Rank history: #5 in FY2021, #3 in FY2022, #5 in FY2024 and not on the FY2025 list; unchanged since FY2022.
4	W S Darley & Co Top agencies DLA (Defense Logistics Agency)	$4,889,710	4.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 170 since FY2022.
5	Federal Resources Supply Company 2 awardees Top agencies DHS (Department of Homeland Security) DOS (Department of State) Navy (Department of the Navy)	$4,876,930	4.3%	Rank history: #4 in FY2021, #15 in FY2022 and not on the FY2024–FY2025 lists; up 10 since FY2022.
6	V.j. Technologies, Inc. Top agencies Army (Department of the Army)	$3,667,897	3.2%	Rank history: #6 in FY2021, #53 in FY2022, #12 in FY2024 and #2 in FY2025; up 47 since FY2022.
7	Illinois Tool Works Inc. 4 awardees, including North Star Imaging Incorporated and QSA Global Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$2,967,907	2.6%	Rank history: #35 in FY2021, #11 in FY2022, #3 in FY2024 and #4 in FY2025; up 4 since FY2022.
8	Novo DR Inc. Top agencies Navy (Department of the Navy)	$2,817,586	2.5%	Rank history: not on the FY2021 list, #26 in FY2022, #88 in FY2024 and not on the FY2025 list; up 18 since FY2022.
9	United Western Technologies Corp. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$2,619,523	2.3%	Rank history: #61 in FY2021, #58 in FY2022, #21 in FY2024 and #16 in FY2025; up 49 since FY2022.
10	American Stress Technologies Inc. Through Stresstech Inc. Top agencies Navy (Department of the Navy)	$2,047,456	1.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
11	Jess W. Jackson and Associates, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,837,900	1.6%	Rank history: #7 in FY2021, #5 in FY2022, #10 in FY2024 and #5 in FY2025; down 6 since FY2022.
12	L3Harris Technologies, Inc. Through Fisica Applied Technologies, Inc. Top agencies WHS (DOD Washington Headquarters Service) Army (Department of the Army)	$1,454,234	1.3%	Rank history: #14 in FY2021, #37 in FY2022, #6 in FY2024 and #11 in FY2025; up 25 since FY2022.
13	Bruker Corporation Through Bruker Scientific LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$1,211,593	1.1%	Rank history: #55 in FY2021, #82 in FY2022 and not on the FY2024–FY2025 lists; up 69 since FY2022.
14	Labconco Corp Top agencies DOJ (Department of Justice)	$1,202,597	1.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
15	Marietta Nondestructive Testing LLC Top agencies Navy (Department of the Navy)	$1,112,000	1.0%	Rank history: #42 in FY2021, #8 in FY2022, #9 in FY2024 and #14 in FY2025; down 7 since FY2022.
16	Willrich Precision Instrument Company, Inc. Top agencies Army (Department of the Army)	$1,049,433	0.9%	Rank history: not on the FY2021 list, #42 in FY2022, #23 in FY2024 and #79 in FY2025; up 26 since FY2022.
17	Government Scientific Source Inc. Top agencies Navy (Department of the Navy) DIA (Defense Intelligence Agency) Army (Department of the Army)	$944,178	0.8%	Rank history: #29 in FY2021, #52 in FY2022, #16 in FY2024 and #64 in FY2025; up 35 since FY2022.
18	MPM Products, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$934,682	0.8%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2024 and #36 in FY2025; new.
19	Chemring Group PLC Through Chemring Energetic Devices Inc. Top agencies USAF (Department of the Air Force)	$894,000	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
20	Astrophysics Inc. Top agencies Treasury (Department of the Treasury) USAF (Department of the Air Force) Army (Department of the Army)	$763,385	0.7%	Rank history: #40 in FY2021, #94 in FY2022, #53 in FY2024 and #40 in FY2025; up 74 since FY2022.
21	Varex Imaging Corp Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$740,002	0.7%	Rank history: #83 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
22	Vanguard Automation GMBH Top agencies USAF (Department of the Air Force)	$730,000	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
23	Feole Technologies Inc. Top agencies Navy (Department of the Navy)	$698,896	0.6%	Rank history: not on the FY2021 list, #17 in FY2022, #65 in FY2024 and not on the FY2025 list; down 6 since FY2022.
24	Physics Applications Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$693,695	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
25	Berkeley Building Company Top agencies Army (Department of the Army)	$666,942	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
26	Nanohmics Inc. Top agencies Army (Department of the Army)	$659,200	0.6%	Rank history: not on the FY2021 list, #65 in FY2022 and not on the FY2024–FY2025 lists; up 39 since FY2022.
27	Gammon Technical Products Inc. Top agencies DLA (Defense Logistics Agency)	$630,775	0.6%	Rank history: #48 in FY2021, #20 in FY2022, #44 in FY2024 and #38 in FY2025; down 7 since FY2022.
28	Newco Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) Army (Department of the Army)	$629,354	0.6%	Rank history: #31 in FY2021, #6 in FY2022, #24 in FY2024 and #25 in FY2025; down 22 since FY2022.
29	Group Four Transducers Inc. Top agencies Navy (Department of the Navy)	$627,928	0.6%	Rank history: not on the FY2021 list, #44 in FY2022 and not on the FY2024–FY2025 lists; up 15 since FY2022.
30	MPI America Inc. Top agencies USAF (Department of the Air Force)	$611,810	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
31	Zwick Roell AG Through Zwickroell, LP Top agencies Navy (Department of the Navy)	$600,484	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
32	Bluehalo, LLC Top agencies USAF (Department of the Air Force)	$598,860	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
33	Canflex USA Inc. Top agencies DOI (Department of the Interior)	$583,918	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
34	Space Electronics, LLC Top agencies Army (Department of the Army)	$496,485	0.4%	Rank history: not on the FY2021 list, #69 in FY2022, #13 in FY2024 and not on the FY2025 list; up 35 since FY2022.
35	Company 91 LLC Top agencies Army (Department of the Army)	$490,000	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
36	Technology for Energy Corp Top agencies Navy (Department of the Navy)	$458,605	0.4%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #13 in FY2025; new.
37	Waters Corporation 2 awardees, including Ta Instruments - Waters L.L.C. and Waters Technologies Corporation Top agencies Army (Department of the Army) Treasury (Department of the Treasury) USAF (Department of the Air Force)	$452,875	0.4%	Rank history: #41 in FY2021, #21 in FY2022 and not on the FY2024–FY2025 lists; down 16 since FY2022.
38	A.k.o. Inc. Top agencies Navy (Department of the Navy)	$428,875	0.4%	Rank history: not on the FY2021 list, #48 in FY2022, #26 in FY2024 and #19 in FY2025; up 10 since FY2022.
39	Chant Engineering Co Inc. Top agencies Navy (Department of the Navy)	$427,385	0.4%	Rank history: not on the FY2021 list, #55 in FY2022 and not on the FY2024–FY2025 lists; up 16 since FY2022.
40	Spectris PLC Through Malvern Panalytical Inc. Top agencies USAF (Department of the Air Force)	$412,921	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
41	Rigaku Americas Holding Inc Top agencies USAF (Department of the Air Force)	$399,475	0.4%	Rank history: #63 in FY2021, #10 in FY2022 and not on the FY2024–FY2025 lists; down 31 since FY2022.
42	Roper Technologies, Inc. 2 awardees, including Zetec Inc. and Precision Analyzer Company L.P. Top agencies Navy (Department of the Navy)	$398,560	0.4%	Rank history: #21 in FY2021, #40 in FY2022 and not on the FY2024–FY2025 lists; down 2 since FY2022.
43	Seneca Strategic Partners, LLC Top agencies DOI (Department of the Interior)	$368,221	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
44	Horizon 66 B.V. Through Horizon 66 B V Top agencies DTRA (Defense Threat Reduction Agency)	$363,008	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
45	Scientific Sales, Inc. Top agencies USAF (Department of the Air Force)	$353,330	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
46	Amphenol Corporation 2 awardees, including MTS Systems Corporation and The Modal Shop, Inc. Top agencies Army (Department of the Army) DOT (Department of Transportation) Navy (Department of the Navy)	$343,787	0.3%	Rank history: #70 in FY2021, #27 in FY2022, #58 in FY2024 and not on the FY2025 list; down 19 since FY2022.
47	AJA International, Inc. Top agencies USAF (Department of the Air Force)	$318,000	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
48	One.7, Inc. Top agencies DOI (Department of the Interior)	$304,808	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
49	MMH Enterprises, LLC Top agencies DOI (Department of the Interior)	$297,810	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
50	Intergraph Corporation 2 awardees, including Hexagon US Federal, Inc. Top agencies Navy (Department of the Navy)	$288,664	0.3%	Rank history: not on the FY2021 list, #80 in FY2022 and not on the FY2024–FY2025 lists; up 30 since FY2022.
51	Tattersall Supply, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$281,183	0.2%	Rank history: #37 in FY2021, #45 in FY2022, #80 in FY2024 and not on the FY2025 list; down 6 since FY2022.
52	American Crane & Equipment Corp Top agencies Navy (Department of the Navy)	$269,585	0.2%	Rank history: not on the FY2021 list, #66 in FY2022, not on the FY2024 list and #87 in FY2025; up 14 since FY2022.
53	Dewesoft D.O.O. Through Dewesoft LLC Top agencies Army (Department of the Army)	$264,820	0.2%	Rank history: not on the FY2021–FY2022 lists, #46 in FY2024 and not on the FY2025 list; new.
54	Logos Imaging LLC Top agencies DHS (Department of Homeland Security)	$264,804	0.2%	Rank history: #78 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
55	Burhani Enterprises Inc. Top agencies DLA (Defense Logistics Agency)	$249,900	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
56	Hill Engineering, LLC Top agencies USAF (Department of the Air Force)	$248,605	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
57	Raven Defense Corporation Top agencies Navy (Department of the Navy)	$246,944	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
58	Expotech U.s.a., Inc. Top agencies DLA (Defense Logistics Agency)	$245,863	0.2%	Rank history: #30 in FY2021, #23 in FY2022, #8 in FY2024 and #20 in FY2025; down 35 since FY2022.
59	Alliant Enterprises, LLC Top agencies Navy (Department of the Navy)	$245,668	0.2%	Rank history: not on the FY2021 list, #91 in FY2022, #52 in FY2024 and not on the FY2025 list; up 32 since FY2022.
60	A.G. Davis Gage & Engineering Co. Top agencies USAF (Department of the Air Force)	$244,645	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
61	Textron Inc. Through Bell Textron Inc. Top agencies Navy (Department of the Navy)	$236,376	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
62	Leidos Holdings, Inc. Through Leidos, Inc. Top agencies DOS (Department of State)	$229,167	0.2%	Rank history: #3 in FY2021, #2 in FY2022 and not on the FY2024–FY2025 lists; down 60 since FY2022.
63	Rtec-Instruments Inc. Top agencies Navy (Department of the Navy)	$220,600	0.2%	Rank history: #86 in FY2021, not on the FY2022 list, #75 in FY2024 and not on the FY2025 list; returned.
64	Stanley Machining & Tool Corp Top agencies Army (Department of the Army)	$215,053	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
65	Samyak Solutions, Inc. Top agencies Army (Department of the Army)	$212,708	0.2%	Rank history: not on the FY2021–FY2022 lists, #31 in FY2024 and not on the FY2025 list; up 38 since FY2022.
66	Boneal, Incorporated Top agencies USAF (Department of the Air Force)	$212,040	0.2%	Rank history: #34 in FY2021, not on the FY2022 list, not on the FY2024 list and #96 in FY2025; returned.
67	Creative Electron Inc. Top agencies USAF (Department of the Air Force) USDA (Department of Agriculture)	$208,977	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
68	Wisecom Technologies Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$204,005	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 72 since FY2022.
69	Defense Venture Holdings, LLC Top agencies DHS (Department of Homeland Security)	$187,425	0.2%	Rank history: not on the FY2021 list, #75 in FY2022 and not on the FY2024–FY2025 lists; up 6 since FY2022.
70	J.a. Woollam Co., Inc. Top agencies USAF (Department of the Air Force)	$187,300	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
71	Admet, Inc. Top agencies USAF (Department of the Air Force) USDA (Department of Agriculture)	$177,555	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
72	Foster & Freeman USA Inc. Top agencies DHS (Department of Homeland Security)	$173,302	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
73	Leco Corp Top agencies Navy (Department of the Navy)	$170,791	0.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #43 in FY2025; new.
74	Hogentogler & Co. Inc. Top agencies Navy (Department of the Navy)	$167,903	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
75	Bridge Diagnostics, Inc. Top agencies Army (Department of the Army)	$166,918	0.1%	Rank history: #100 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
76	TNL Sales LLC Top agencies DLA (Defense Logistics Agency)	$166,001	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 132 since FY2022.
77	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency)	$165,210	0.1%	Rank history: #96 in FY2021, #97 in FY2022 and not on the FY2024–FY2025 lists; up 20 since FY2022.
78	Ametek Inc. 4 awardees, including Gatan Inc., Atlas Material Testing Technology L.L.C. and Spectro Analytical Instruments, Inc. Top agencies Navy (Department of the Navy) Treasury (Department of the Treasury)	$164,409	0.1%	Rank history: #47 in FY2021, #39 in FY2022, #22 in FY2024 and #51 in FY2025; down 39 since FY2022.
79	Araz Systems LLC Top agencies DLA (Defense Logistics Agency)	$150,979	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
80	Vista Clara Inc. Top agencies USDA (Department of Agriculture)	$150,750	0.1%	Rank history: #56 in FY2021, not on the FY2022 list, #61 in FY2024 and not on the FY2025 list; returned.
81	Smiths Group PLC Through Smiths Detection Inc. Top agencies USAF (Department of the Air Force)	$148,880	0.1%	Rank history: not on the FY2021 list, #41 in FY2022 and not on the FY2024–FY2025 lists; down 40 since FY2022.
82	Fedcorp Services, Inc. Top agencies DIA (Defense Intelligence Agency)	$142,269	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
83	Sharplogixx, LLC Top agencies Army (Department of the Army)	$141,950	0.1%	Rank history: not on the FY2021–FY2022 lists, #32 in FY2024 and not on the FY2025 list; new.
84	Mirion Technologies (CANBERRA) Inc. Top agencies USAF (Department of the Air Force)	$131,740	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
85	Park Engineering Services Inc. Top agencies Army (Department of the Army)	$127,972	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
86	Proto Manufacturing, Inc. Top agencies Navy (Department of the Navy)	$123,450	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
87	NDT Supply COM Inc Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$120,449	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 40 since FY2022.
88	King Nutronics Corporation Top agencies USSOCOM (United States Special Operations Command)	$116,583	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
89	Test Equipment Distributors LLC Top agencies Army (Department of the Army)	$115,025	0.1%	Rank history: not on the FY2021 list, #59 in FY2022 and not on the FY2024–FY2025 lists; down 30 since FY2022.
90	Tinius Olsen Testing Machine Company Top agencies Army (Department of the Army)	$112,402	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 96 since FY2022.
91	Inspection Technologies, Inc. Top agencies Navy (Department of the Navy)	$110,333	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
92	Firstchoice Group America LLC Top agencies Army (Department of the Army)	$108,893	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
93	Dynamic Measurement Systems, LLC Top agencies DLA (Defense Logistics Agency)	$103,488	0.1%	Rank history: not on the FY2021 list, #98 in FY2022, #99 in FY2024 and not on the FY2025 list; up 5 since FY2022.
94	OSI Systems Inc. 2 awardees, including Rapiscan Systems Inc. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security) DTRA (Defense Threat Reduction Agency)	$102,848	0.1%	Rank history: #18 in FY2021, #19 in FY2022, #43 in FY2024 and not on the FY2025 list; down 75 since FY2022.
95	Tevet LLC Top agencies Navy (Department of the Navy)	$102,518	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
96	JTM Enterprises LLC Top agencies DOI (Department of the Interior)	$102,300	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
97	Sebia, Inc. Top agencies VA (Department of Veterans Affairs)	$101,800	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
98	Analysis Tech, Inc. Top agencies Navy (Department of the Navy)	$99,975	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
99	Thermo Electron Corporation 3 awardees, including Thermo Electron North America LLC and Fisher Scientific Company L.L.C. Top agencies Navy (Department of the Navy) USDA (Department of Agriculture)	$99,083	0.1%	Rank history: #32 in FY2021, #29 in FY2022 and not on the FY2024–FY2025 lists; down 70 since FY2022.
100	Waygate Technologies USA LP Top agencies Navy (Department of the Navy)	$98,892	0.1%	Rank history: #52 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.

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100 of 307 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 $113 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.
Fiscal year 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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 6635 contractors in FY2023?

1. Lockheed Martin Corporation ($30.4M), 2. Olympus America Inc ($9.14M), 3. Moog Inc. ($6.51M), 4. W S Darley & Co ($4.89M), 5. Federal Resources Supply Company ($4.88M), 6. V.j. Technologies, Inc. ($3.67M), 7. Illinois Tool Works Inc. ($2.97M), 8. Novo DR Inc. ($2.82M), 9. United Western Technologies Corp. ($2.62M), 10. American Stress Technologies Inc. ($2.05M).

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