Top 100 Contractors in PSC 44: Furnace/Steam/Drying; Nuclear Reactor, Jul 2025–Jun 2026

Name: Top 100 Contractors in PSC 44: Furnace/Steam/Drying; Nuclear Reactor, 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 89% of PSC 44 contract dollars from July 2025 through June 2026

Contract obligations: $1,609,416,381 Net of deobligations, by contracts coded PSC 44 or a code under it
Contractors: 435 Parent companies with an obligation
Largest contractor: Fluor Corporation $1.42 billion, 82.2% 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	Fluor Corporation Through Fluor Marine Propulsion, LLC Top agencies Navy (Department of the Navy)	$1,416,849,240	82.2%	Rank history: #2 in FY2021, #2 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2	General Dynamics Corporation Through Electric Boat Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$32,704,258	1.9%	Rank history: #5 in FY2021, #3 in FY2022, #3 in FY2023, #4 in FY2024 and #3 in FY2025; up 1 since Jul 2024–Jun 2025.
3	Westinghouse Government Services LLC Top agencies DOE (Department of Energy)	$25,230,672	1.5%	Rank history: not on the FY2021–FY2023 lists, #11 in FY2024 and #4 in FY2025; up 1 since Jul 2024–Jun 2025.
4	The O.c. Lugo Co Inc. Top agencies DLA (Defense Logistics Agency)	$10,675,368	0.6%	Rank history: #10 in FY2021, #35 in FY2022, #8 in FY2023, #10 in FY2024 and #5 in FY2025; up 5 since Jul 2024–Jun 2025.
5	Huntington Ingalls Industries, Inc. Through Huntington Ingalls Inc. Top agencies Navy (Department of the Navy)	$9,158,110	0.5%	Rank history: #6 in FY2021, #7 in FY2022, #6 in FY2023, #8 in FY2024 and #7 in FY2025; up 1 since Jul 2024–Jun 2025.
6	Cepeda Associates, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$8,816,775	0.5%	Rank history: #12 in FY2021, #6 in FY2022, #7 in FY2023, #7 in FY2024 and #9 in FY2025; up 1 since Jul 2024–Jun 2025.
7	ECI Defense Group, Inc. 2 awardees Top agencies DLA (Defense Logistics Agency)	$8,729,846	0.5%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023, #16 in FY2024 and #8 in FY2025; up 12 since Jul 2024–Jun 2025.
8	Aqua-Chem, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$7,750,528	0.4%	Rank history: #13 in FY2021, #9 in FY2022, #13 in FY2023, #15 in FY2024 and #13 in FY2025; up 6 since Jul 2024–Jun 2025.
9	HDT Expeditionary Systems Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$6,770,220	0.4%	Rank history: #27 in FY2021, not on the FY2022–FY2023 lists, #30 in FY2024 and #31 in FY2025; up 23 since Jul 2024–Jun 2025.
10	Bechtel Corp Through Bechtel Plant Machinery, Inc. Top agencies Navy (Department of the Navy)	$6,734,019	0.4%	Rank history: #1 in FY2021, #1 in FY2022, #2 in FY2023, #2 in FY2024 and #6 in FY2025; unchanged since Jul 2024–Jun 2025.
11	Phillips Corporation Top agencies USAF (Department of the Air Force)	$5,673,361	0.3%	Rank history: not on the FY2021–FY2024 lists and #10 in FY2025; new, not ranked in Jul 2024–Jun 2025.
12	Arctic Slope Regional Corporation Through Asrc Federal Facilities Logistics LLC Top agencies Navy (Department of the Navy)	$4,257,350	0.2%	Rank history: not on the FY2021–FY2024 lists and #11 in FY2025; new, not ranked in Jul 2024–Jun 2025.
13	Chand, L.L.C. Top agencies DLA (Defense Logistics Agency)	$3,318,438	0.2%	Rank history: not on the FY2021–FY2023 lists, #66 in FY2024 and not on the FY2025 list; up 138 since Jul 2024–Jun 2025.
14	Argo Turboserve Corporation Top agencies DLA (Defense Logistics Agency)	$3,172,410	0.2%	Rank history: #18 in FY2021, #20 in FY2022, #12 in FY2023, #17 in FY2024 and #15 in FY2025; down 1 since Jul 2024–Jun 2025.
15	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$2,541,524	0.1%	Rank history: #28 in FY2021, #42 in FY2022, #28 in FY2023, #22 in FY2024 and #12 in FY2025; down 4 since Jul 2024–Jun 2025.
16	Atlantic Diving Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$2,441,444	0.1%	Rank history: not on the FY2021–FY2025 lists; up 164 since Jul 2024–Jun 2025.
17	Phoenix Trading Inc. Top agencies DLA (Defense Logistics Agency)	$1,931,376	0.1%	Rank history: #31 in FY2021, #43 in FY2022, #21 in FY2023, #21 in FY2024 and #22 in FY2025; up 8 since Jul 2024–Jun 2025.
18	Peerless Instrument Co., Inc. Top agencies Navy (Department of the Navy)	$1,920,413	0.1%	Rank history: not on the FY2021–FY2023 lists, #28 in FY2024 and #45 in FY2025; up 29 since Jul 2024–Jun 2025.
19	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,635,130	0.1%	Rank history: #11 in FY2021, #30 in FY2022, not on the FY2023 list, #32 in FY2024 and #33 in FY2025; up 26 since Jul 2024–Jun 2025.
20	American Centrifuge Operating, LLC Top agencies DOE (Department of Energy)	$1,556,985	0.1%	Rank history: not on the FY2021–FY2023 lists, #3 in FY2024 and #2 in FY2025; down 18 since Jul 2024–Jun 2025.
21	Waltron Bull & Roberts, LLC Top agencies Navy (Department of the Navy)	$1,448,145	0.1%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; new, not ranked in Jul 2024–Jun 2025.
22	S I T Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,230,767	0.1%	Rank history: #21 in FY2021, #66 in FY2022, #20 in FY2023, #23 in FY2024 and #78 in FY2025; up 22 since Jul 2024–Jun 2025.
23	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency)	$1,151,675	0.1%	Rank history: #39 in FY2021, #61 in FY2022, #16 in FY2023, #26 in FY2024 and #29 in FY2025; up 7 since Jul 2024–Jun 2025.
24	Vinson Process Controls Company, L.P. Top agencies USAF (Department of the Air Force)	$1,138,212	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
25	Mactaggart, Scott & Co. Ltd Top agencies DHS (Department of Homeland Security)	$1,029,780	0.1%	Rank history: not on the FY2021–FY2024 lists and #26 in FY2025; new, not ranked in Jul 2024–Jun 2025.
26	Renk Systems Corp Top agencies Navy (Department of the Navy)	$1,025,552	0.1%	Rank history: not on the FY2021–FY2023 lists, #12 in FY2024 and #35 in FY2025; up 20 since Jul 2024–Jun 2025.
27	H C Merchandisers, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,002,487	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
28	Howell Laboratories Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$944,260	0.1%	Rank history: #24 in FY2021, #32 in FY2022, #27 in FY2023, #57 in FY2024 and #20 in FY2025; down 6 since Jul 2024–Jun 2025.
29	Northern Defense Industries, LLC 2 awardees Top agencies DLA (Defense Logistics Agency)	$943,352	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
30	JE Hurley Co Top agencies DLA (Defense Logistics Agency)	$927,960	0.1%	Rank history: not on the FY2021–FY2024 lists and #24 in FY2025; up 54 since Jul 2024–Jun 2025.
31	Pioneer Industries, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$914,436	0.1%	Rank history: #40 in FY2021, #31 in FY2022, #60 in FY2023, #40 in FY2024 and #28 in FY2025; down 3 since Jul 2024–Jun 2025.
32	Fluid Handling LLC 2 awardees Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$912,613	0.1%	Rank history: not on the FY2021–FY2023 lists, #56 in FY2024 and #27 in FY2025; up 8 since Jul 2024–Jun 2025.
33	Frham Safety Products LLC Top agencies Navy (Department of the Navy)	$830,154	<0.1%	Rank history: not on the FY2021–FY2022 lists, #32 in FY2023, #50 in FY2024 and #16 in FY2025; down 13 since Jul 2024–Jun 2025.
34	Design West Technologies Inc. Top agencies Navy (Department of the Navy)	$784,500	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
35	Par Defense Industries, LLC Top agencies DLA (Defense Logistics Agency)	$642,784	<0.1%	Rank history: not on the FY2021–FY2024 lists and #59 in FY2025; up 16 since Jul 2024–Jun 2025.
36	Sogen Company, Inc. Top agencies DLA (Defense Logistics Agency)	$622,417	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 107 since Jul 2024–Jun 2025.
37	Front Range Construction Inc. Top agencies HHS (Department of Health and Human Services)	$605,730	<0.1%	Rank history: not on the FY2021–FY2024 lists and #42 in FY2025; new, not ranked in Jul 2024–Jun 2025.
38	Separator Spares & Equipment LLC Top agencies DLA (Defense Logistics Agency)	$563,120	<0.1%	Rank history: not on the FY2021–FY2023 lists, #72 in FY2024 and #63 in FY2025; up 50 since Jul 2024–Jun 2025.
39	RTX Corporation Through Hamilton Sundstrand Corporation Top agencies Navy (Department of the Navy)	$554,292	<0.1%	Rank history: not on the FY2021–FY2023 lists, #39 in FY2024 and #30 in FY2025; unchanged since Jul 2024–Jun 2025.
40	Bighorn Solutions LLC Top agencies DLA (Defense Logistics Agency)	$518,615	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
41	Hi-Tech Air & Water Purification Systems, LLC Top agencies USAF (Department of the Air Force)	$513,700	<0.1%	Rank history: #63 in FY2021, not on the FY2022–FY2024 lists and #87 in FY2025; up 173 since Jul 2024–Jun 2025.
42	Ipsen Inc. Top agencies Army (Department of the Army)	$491,890	<0.1%	Rank history: not on the FY2021–FY2024 lists and #49 in FY2025; new, not ranked in Jul 2024–Jun 2025.
43	Redlands Manufacturing Co LLC Top agencies DLA (Defense Logistics Agency)	$477,444	<0.1%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; up 65 since Jul 2024–Jun 2025.
44	Western Michigan Fleet Parts Inc. Top agencies DLA (Defense Logistics Agency)	$471,680	<0.1%	Rank history: #56 in FY2021, not on the FY2022 list, #22 in FY2023, #29 in FY2024 and not on the FY2025 list; up 229 since Jul 2024–Jun 2025.
45	Drytech Inc. Top agencies DLA (Defense Logistics Agency)	$428,784	<0.1%	Rank history: #35 in FY2021, #23 in FY2022, #42 in FY2023, #36 in FY2024 and #40 in FY2025; down 12 since Jul 2024–Jun 2025.
46	Marinette Marine Corporation Through Fincantieri Marine Systems North America, Inc. Top agencies DLA (Defense Logistics Agency)	$426,837	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 293 since Jul 2024–Jun 2025.
47	Larkos Packing and Distribution Inc. Top agencies DLA (Defense Logistics Agency)	$425,800	<0.1%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; up 56 since Jul 2024–Jun 2025.
48	Linmarr Associates, Inc. Top agencies DLA (Defense Logistics Agency)	$408,834	<0.1%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; up 20 since Jul 2024–Jun 2025.
49	Hyspan Precision Products, Inc. Top agencies Navy (Department of the Navy)	$394,812	<0.1%	Rank history: not on the FY2021 list, #67 in FY2022, not on the FY2023–FY2024 lists and #58 in FY2025; new, not ranked in Jul 2024–Jun 2025.
50	Derbyshire Machine & Tool Co Top agencies DLA (Defense Logistics Agency)	$387,870	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 110 since Jul 2024–Jun 2025.
51	FAD Pennsylvania Inc Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$383,611	<0.1%	Rank history: not on the FY2021–FY2023 lists, #18 in FY2024 and #80 in FY2025; up 3 since Jul 2024–Jun 2025.
52	Aerocontrolex Group, Inc. Top agencies DLA (Defense Logistics Agency)	$366,550	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
53	Derrah Morrison Enterprises LLC Top agencies VA (Department of Veterans Affairs)	$350,915	<0.1%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023, not on the FY2024 list and #64 in FY2025; new, not ranked in Jul 2024–Jun 2025.
54	Louisiana Controls, Inc. Top agencies DOJ (Department of Justice)	$350,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #65 in FY2025; new, not ranked in Jul 2024–Jun 2025.
55	Treadwell Corporation (Delaware) Top agencies DLA (Defense Logistics Agency)	$335,372	<0.1%	Rank history: not on the FY2021 list, #74 in FY2022 and not on the FY2023–FY2025 lists; up 318 since Jul 2024–Jun 2025.
56	Powerflow Fluid Systems, LLC Top agencies DOI (Department of the Interior)	$335,200	<0.1%	Rank history: not on the FY2021–FY2024 lists and #66 in FY2025; new, not ranked in Jul 2024–Jun 2025.
57	AQW Inc. Top agencies DLA (Defense Logistics Agency)	$330,063	<0.1%	Rank history: #43 in FY2021, #45 in FY2022, #52 in FY2023, #58 in FY2024 and #46 in FY2025; down 5 since Jul 2024–Jun 2025.
58	Csic Solutions LLC Top agencies VA (Department of Veterans Affairs)	$323,075	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
59	Pennram Diversified Manufacturing Corp Top agencies DOE (Department of Energy)	$310,500	<0.1%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; new, not ranked in Jul 2024–Jun 2025.
60	River City Mechanical Inc Top agencies VA (Department of Veterans Affairs)	$295,522	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
61	RSC Electrical & Mechanical Contractors, Inc.	$295,451	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
62	Maxim Evaporators of America, LLC Top agencies DLA (Defense Logistics Agency)	$292,926	<0.1%	Rank history: not on the FY2021 list, #81 in FY2022, not on the FY2023–FY2024 lists and #52 in FY2025; up 2 since Jul 2024–Jun 2025.
63	AGM Container Controls Inc. Top agencies DLA (Defense Logistics Agency)	$283,810	<0.1%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023, #60 in FY2024 and #62 in FY2025; up 9 since Jul 2024–Jun 2025.
64	Industrial Vacuum Equipment Corporation (Ivec) Top agencies Navy (Department of the Navy)	$279,800	<0.1%	Rank history: not on the FY2021–FY2024 lists and #54 in FY2025; down 14 since Jul 2024–Jun 2025.
65	Aantilia LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) DHS (Department of Homeland Security)	$275,506	<0.1%	Rank history: #49 in FY2021, #57 in FY2022, not on the FY2023 list, #95 in FY2024 and not on the FY2025 list; up 58 since Jul 2024–Jun 2025.
66	The Boeing Company Top agencies USAF (Department of the Air Force)	$274,407	<0.1%	Rank history: #53 in FY2021, not on the FY2022–FY2023 lists, #48 in FY2024 and not on the FY2025 list; up 26 since Jul 2024–Jun 2025.
67	Veterans Aerospace LLC Top agencies DLA (Defense Logistics Agency)	$271,595	<0.1%	Rank history: not on the FY2021–FY2024 lists and #82 in FY2025; up 67 since Jul 2024–Jun 2025.
68	Kay Kay LLC Top agencies DOJ (Department of Justice) Navy (Department of the Navy) VA (Department of Veterans Affairs)	$268,910	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 139 since Jul 2024–Jun 2025.
69	Supply King Usa, LLC Top agencies Army (Department of the Army)	$249,995	<0.1%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; new, not ranked in Jul 2024–Jun 2025.
70	Government of the United States Through Federal Prison Industries, Inc. Top agencies Army (Department of the Army) DOJ (Department of Justice)	$249,873	<0.1%	Rank history: #73 in FY2021, #52 in FY2022, #61 in FY2023, #42 in FY2024 and #36 in FY2025; down 27 since Jul 2024–Jun 2025.
71	Reagent World Inc Top agencies USAF (Department of the Air Force)	$249,722	<0.1%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; new, not ranked in Jul 2024–Jun 2025.
72	CE Solution Plus Corp. Top agencies USAF (Department of the Air Force)	$249,300	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
73	Export 220Volt Inc. Top agencies DOS (Department of State) USAF (Department of the Air Force)	$238,857	<0.1%	Rank history: #50 in FY2021, #15 in FY2022, #34 in FY2023, #20 in FY2024 and #32 in FY2025; down 49 since Jul 2024–Jun 2025.
74	Jamaica Bearings Co., Inc. Top agencies DLA (Defense Logistics Agency)	$236,754	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
75	American Boiler Inc.	$232,076	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 123 since Jul 2024–Jun 2025.
76	General Nuclear Corp Top agencies Navy (Department of the Navy)	$228,214	<0.1%	Rank history: not on the FY2021–FY2023 lists, #69 in FY2024 and not on the FY2025 list; up 33 since Jul 2024–Jun 2025.
77	Boonyium & Associates Limited Top agencies Navy (Department of the Navy)	$227,587	<0.1%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; new, not ranked in Jul 2024–Jun 2025.
78	Lynchburg Air Preheater Corporation Top agencies DOI (Department of the Interior) Commerce (Department of Commerce)	$227,438	<0.1%	Rank history: #84 in FY2021, #58 in FY2022, not on the FY2023 list, #25 in FY2024 and #55 in FY2025; down 29 since Jul 2024–Jun 2025.
79	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency)	$220,923	<0.1%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2023, not on the FY2024 list and #67 in FY2025; up 6 since Jul 2024–Jun 2025.
80	The Jahnda Group, LLC Top agencies VA (Department of Veterans Affairs)	$219,842	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 187 since Jul 2024–Jun 2025.
81	Tera Consulting Inc. Top agencies Army (Department of the Army)	$216,760	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
82	Diazyme Laboratories Inc. Through General Atomics Top agencies USUHS (DOD Uniformed Services University of the Health Sciences)	$209,380	<0.1%	Rank history: not on the FY2021–FY2024 lists and #76 in FY2025; up 66 since Jul 2024–Jun 2025.
83	All-Safe Inc. Top agencies DLA (Defense Logistics Agency)	$206,194	<0.1%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
84	Lockheed Martin Corporation 2 awardees Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$203,601	<0.1%	Rank history: not on the FY2021–FY2023 lists, #97 in FY2024 and not on the FY2025 list; up 28 since Jul 2024–Jun 2025.
85	Johnson Controls Navy Systems, LLC Top agencies DLA (Defense Logistics Agency)	$200,801	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 282 since Jul 2024–Jun 2025.
86	American Trading Services, Inc. Top agencies DLA (Defense Logistics Agency)	$200,079	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
87	Marine Electric Systems Inc. Top agencies Navy (Department of the Navy)	$192,969	<0.1%	Rank history: #91 in FY2021, #28 in FY2022 and not on the FY2023–FY2025 lists; up 72 since Jul 2024–Jun 2025.
88	Leonardo S.p.A. 3 awardees, including Laurel Technologies Partnership, Engineered Coil Company and DRS Naval Power Systems Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$192,876	<0.1%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; up 11 since Jul 2024–Jun 2025.
89	Westchester Plastics LLC Top agencies Army (Department of the Army)	$191,696	<0.1%	Rank history: not on the FY2021–FY2023 lists, #88 in FY2024 and #99 in FY2025; new, not ranked in Jul 2024–Jun 2025.
90	Norcatec LLC Top agencies DLA (Defense Logistics Agency)	$189,538	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 160 since Jul 2024–Jun 2025.
91	MCO Solutions, Inc. Top agencies DLA (Defense Logistics Agency)	$188,945	<0.1%	Rank history: not on the FY2021 list, #83 in FY2022, not on the FY2023 list, #79 in FY2024 and #69 in FY2025; up 10 since Jul 2024–Jun 2025.
92	Formica Industries LLC Top agencies DLA (Defense Logistics Agency)	$183,200	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
93	Corestar International Corporation Top agencies Navy (Department of the Navy)	$181,832	<0.1%	Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; unchanged since Jul 2024–Jun 2025.
94	Writax Distribution Private Limited Top agencies DOS (Department of State)	$180,000	<0.1%	Rank history: not on the FY2021–FY2022 lists, #95 in FY2023 and not on the FY2024–FY2025 lists; up 28 since Jul 2024–Jun 2025.
95	RNK International, Inc. Top agencies DLA (Defense Logistics Agency)	$178,965	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 74 since Jul 2024–Jun 2025.
96	R & M Government Services Inc. Top agencies DLA (Defense Logistics Agency)	$176,086	<0.1%	Rank history: not on the FY2021–FY2022 lists, #85 in FY2023, #47 in FY2024 and #94 in FY2025; down 17 since Jul 2024–Jun 2025.
97	Tomahawk Sourcing LLC Top agencies DLA (Defense Logistics Agency)	$175,133	<0.1%	Rank history: #62 in FY2021, not on the FY2022–FY2024 lists and #43 in FY2025; down 35 since Jul 2024–Jun 2025.
98	NGH Retail LLC Top agencies DLA (Defense Logistics Agency)	$173,088	<0.1%	Rank history: #85 in FY2021 and not on the FY2022–FY2025 lists; up 43 since Jul 2024–Jun 2025.
99	Bruker Corporation Through Bruker Detection Corp Top agencies DLA (Defense Logistics Agency)	$171,558	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
100	Dibert Valve and Fitting Company, Incorporated Top agencies Navy (Department of the Navy)	$168,231	<0.1%	Rank history: #29 in FY2021, #33 in FY2022, #64 in FY2023 and not on the FY2024–FY2025 lists; up 130 since Jul 2024–Jun 2025.

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100 of 435 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC 44

Code	Net obligations	Largest contractor
4470 Nuclear Reactors	$1,498,988,878	Fluor Corporation
4420 Heat Exchangers and Steam Condensers	$46,507,561	ECI Defense Group, Inc.
4460 Air Purification Equipment	$36,149,469	The O.c. Lugo Co Inc.
4440 Driers, Dehydrators, and Anhydrators	$12,713,972	Argo Turboserve Corporation
4430 Industrial Furnaces, Kilns, Lehrs, and Ovens	$7,790,380	Phillips Corporation
4410 Industrial Boilers	$7,266,121	Front Range Construction Inc.

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 $1.72 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.
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 44 contractors in Jul 2025–Jun 2026?

1. Fluor Corporation ($1.42B), 2. General Dynamics Corporation ($32.7M), 3. Westinghouse Government Services LLC ($25.2M), 4. The O.c. Lugo Co Inc. ($10.7M), 5. Huntington Ingalls Industries, Inc. ($9.16M), 6. Cepeda Associates, Inc. ($8.82M), 7. ECI Defense Group, Inc. ($8.73M), 8. Aqua-Chem, Inc. ($7.75M), 9. HDT Expeditionary Systems Inc. ($6.77M), 10. Bechtel Corp ($6.73M).

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