Top 100 Contractors in PSC 45: Plumbing, Heating, Waste Disposal, Jul 2025–Jun 2026

Name: Top 100 Contractors in PSC 45: Plumbing, Heating, Waste Disposal, 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 41% of PSC 45 contract dollars from July 2025 through June 2026

Contract obligations: $108,235,949 Net of deobligations, by contracts coded PSC 45 or a code under it
Contractors: 545 Parent companies with an obligation
Largest contractor: HDT Expeditionary Systems Inc. $10.7 million, 9.3% 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	HDT Expeditionary Systems Inc. Top agencies Army (Department of the Army)	$10,679,500	9.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
2	S & K Aerospace, LLC Top agencies USAF (Department of the Air Force)	$7,737,896	6.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
3	Flightfab, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$5,132,560	4.5%	Rank history: #13 in FY2021, #5 in FY2022, #3 in FY2023, #3 in FY2024 and #6 in FY2025; unchanged since Jul 2024–Jun 2025.
4	Atlantic Diving Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$3,756,724	3.3%	Rank history: not on the FY2021–FY2025 lists; up 200 since Jul 2024–Jun 2025.
5	Lockheed Martin Corporation 2 awardees, including Sikorsky Aircraft Corporation and Derco Aerospace, Inc. Top agencies DLA (Defense Logistics Agency)	$3,617,067	3.2%	Rank history: #22 in FY2021, #20 in FY2022, #15 in FY2023, #5 in FY2024 and #1 in FY2025; up 10 since Jul 2024–Jun 2025.
6	Argo Turboserve Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$3,539,756	3.1%	Rank history: #4 in FY2021, #9 in FY2022, #8 in FY2023, #6 in FY2024 and #4 in FY2025; unchanged since Jul 2024–Jun 2025.
7	Advanced Technology International Top agencies Navy (Department of the Navy)	$3,428,231	3.0%	Rank history: not on the FY2021–FY2024 lists and #26 in FY2025; new, not ranked in Jul 2024–Jun 2025.
8	W S Darley & Co Top agencies DLA (Defense Logistics Agency)	$3,296,480	2.9%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
9	Windward Enterprises, LLC Top agencies DLA (Defense Logistics Agency)	$2,827,904	2.5%	Rank history: #2 in FY2021, #3 in FY2022, #2 in FY2023, #4 in FY2024 and #2 in FY2025; down 5 since Jul 2024–Jun 2025.
10	Evac North America Inc Top agencies DLA (Defense Logistics Agency)	$2,688,174	2.3%	Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; up 21 since Jul 2024–Jun 2025.
11	The Electric Heater Co Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$2,628,800	2.3%	Rank history: not on the FY2021–FY2024 lists and #8 in FY2025; up 1 since Jul 2024–Jun 2025.
12	ECI Defense Group, Inc. Top agencies DLA (Defense Logistics Agency)	$2,600,067	2.3%	Rank history: #9 in FY2021, #15 in FY2022, #7 in FY2023, #7 in FY2024 and #15 in FY2025; down 2 since Jul 2024–Jun 2025.
13	S I T Corporation Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$2,503,835	2.2%	Rank history: #47 in FY2021, #79 in FY2022, not on the FY2023 list, #67 in FY2024 and #16 in FY2025; up 5 since Jul 2024–Jun 2025.
14	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency)	$2,187,784	1.9%	Rank history: #12 in FY2021, #10 in FY2022, #26 in FY2023, #23 in FY2024 and #19 in FY2025; up 13 since Jul 2024–Jun 2025.
15	Integrated Procurement Technologies Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$1,701,348	1.5%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023, #18 in FY2024 and #25 in FY2025; up 13 since Jul 2024–Jun 2025.
16	MCO Solutions, Inc. Top agencies DLA (Defense Logistics Agency)	$1,691,839	1.5%	Rank history: not on the FY2021 list, #42 in FY2022, #28 in FY2023, #46 in FY2024 and #44 in FY2025; up 14 since Jul 2024–Jun 2025.
17	Mckenzie Construction & Site Development LLC Top agencies DOI (Department of the Interior)	$1,591,851	1.4%	Rank history: not on the FY2021–FY2024 lists and #11 in FY2025; new, not ranked in Jul 2024–Jun 2025.
18	Phillips Environmental Products, Inc. Top agencies DLA (Defense Logistics Agency)	$1,342,200	1.2%	Rank history: #17 in FY2021, #14 in FY2022, #22 in FY2023, #16 in FY2024 and #10 in FY2025; up 4 since Jul 2024–Jun 2025.
19	Fluidra SA Through Evac North America Inc. Top agencies DLA (Defense Logistics Agency)	$1,211,645	1.1%	Rank history: not on the FY2021–FY2023 lists, #11 in FY2024 and #3 in FY2025; down 12 since Jul 2024–Jun 2025.
20	Alphapointe Top agencies DLA (Defense Logistics Agency)	$1,208,336	1.1%	Rank history: #16 in FY2021, #13 in FY2022, #34 in FY2023, #20 in FY2024 and #18 in FY2025; down 4 since Jul 2024–Jun 2025.
21	Etolin Strait Associates LLC Top agencies Navy (Department of the Navy)	$1,196,035	1.0%	Rank history: not on the FY2021–FY2024 lists and #17 in FY2025; new, not ranked in Jul 2024–Jun 2025.
22	Rock Construction Management LLC Top agencies VA (Department of Veterans Affairs)	$1,100,000	1.0%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
23	Vantex Service Corporation Top agencies Army (Department of the Army)	$1,011,817	0.9%	Rank history: #6 in FY2021, #12 in FY2022, #14 in FY2023, #10 in FY2024 and #13 in FY2025; down 9 since Jul 2024–Jun 2025.
24	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency)	$913,207	0.8%	Rank history: #8 in FY2021, #19 in FY2022, #13 in FY2023, #17 in FY2024 and #21 in FY2025; down 7 since Jul 2024–Jun 2025.
25	DLA Aerospace LLC Top agencies DLA (Defense Logistics Agency)	$761,664	0.7%	Rank history: not on the FY2021–FY2025 lists; up 50 since Jul 2024–Jun 2025.
26	Waterbury Plumbing & Heating Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$721,922	0.6%	Rank history: #24 in FY2021, #27 in FY2022, #17 in FY2023, #14 in FY2024 and #14 in FY2025; down 15 since Jul 2024–Jun 2025.
27	Leonardo S.p.A. 2 awardees, including Engineered Coil Company Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$714,407	0.6%	Rank history: #50 in FY2021, not on the FY2022–FY2023 lists, #38 in FY2024 and #39 in FY2025; up 5 since Jul 2024–Jun 2025.
28	Linmarr Associates, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$687,978	0.6%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; up 391 since Jul 2024–Jun 2025.
29	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$639,747	0.6%	Rank history: #95 in FY2021, #98 in FY2022, #53 in FY2023, #37 in FY2024 and #51 in FY2025; up 49 since Jul 2024–Jun 2025.
30	Larkos Packing and Distribution Inc. Top agencies DLA (Defense Logistics Agency)	$638,740	0.6%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2023, #32 in FY2024 and #24 in FY2025; down 10 since Jul 2024–Jun 2025.
31	FBC Enterprises LLC Top agencies DLA (Defense Logistics Agency)	$629,639	0.5%	Rank history: not on the FY2021–FY2024 lists and #56 in FY2025; new, not ranked in Jul 2024–Jun 2025.
32	Air Burners, Inc. Top agencies USDA (Department of Agriculture) Army (Department of the Army) DOI (Department of the Interior)	$626,862	0.5%	Rank history: #72 in FY2021, not on the FY2022 list, #23 in FY2023, #74 in FY2024 and #59 in FY2025; new, not ranked in Jul 2024–Jun 2025.
33	Seahorse Defense Supply, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$616,166	0.5%	Rank history: #98 in FY2021 and not on the FY2022–FY2025 lists; up 387 since Jul 2024–Jun 2025.
34	R & M Government Services Inc. Top agencies DLA (Defense Logistics Agency)	$607,447	0.5%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2023, #42 in FY2024 and #20 in FY2025; unchanged since Jul 2024–Jun 2025.
35	RNK International, Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) DOS (Department of State)	$601,812	0.5%	Rank history: not on the FY2021–FY2022 lists, #46 in FY2023, #79 in FY2024 and #40 in FY2025; up 2 since Jul 2024–Jun 2025.
36	D'S Ventures, LLC Top agencies HHS (Department of Health and Human Services)	$580,000	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
37	Auburn Mechanical, Inc. Top agencies Navy (Department of the Navy)	$538,900	0.5%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; new, not ranked in Jul 2024–Jun 2025.
38	Seemann Composites, LLC Top agencies DLA (Defense Logistics Agency)	$515,006	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
39	R P M Supply Corporation Top agencies DLA (Defense Logistics Agency)	$492,166	0.4%	Rank history: not on the FY2021–FY2022 lists, #40 in FY2023 and not on the FY2024–FY2025 lists; up 130 since Jul 2024–Jun 2025.
40	Veterans Aerospace LLC Top agencies DLA (Defense Logistics Agency)	$485,217	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
41	Teya Diversified Services LLC Top agencies USAF (Department of the Air Force)	$465,810	0.4%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; new, not ranked in Jul 2024–Jun 2025.
42	Malpass Construction Co Inc. Top agencies DLA (Defense Logistics Agency)	$449,860	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
43	Andrew J Zeigler LLC Top agencies DLA (Defense Logistics Agency) VA (Department of Veterans Affairs)	$449,505	0.4%	Rank history: not on the FY2021–FY2024 lists and #95 in FY2025; new, not ranked in Jul 2024–Jun 2025.
44	Ferguson Enterprises LLC Top agencies DOJ (Department of Justice) DOS (Department of State) DOI (Department of the Interior)	$444,389	0.4%	Rank history: not on the FY2021–FY2025 lists; up 222 since Jul 2024–Jun 2025.
45	Tera Consulting Inc. Top agencies DOJ (Department of Justice) Army (Department of the Army)	$435,736	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
46	Eastern Power Technologies Inc. Top agencies DOJ (Department of Justice)	$431,471	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
47	Samit LLC Top agencies DLA (Defense Logistics Agency)	$403,117	0.4%	Rank history: not on the FY2021–FY2025 lists; up 127 since Jul 2024–Jun 2025.
48	Mckenna Brytan Industries LLC Top agencies DLA (Defense Logistics Agency)	$401,369	0.3%	Rank history: not on the FY2021–FY2025 lists; up 78 since Jul 2024–Jun 2025.
49	Bestweld Inc. Top agencies DLA (Defense Logistics Agency)	$372,767	0.3%	Rank history: not on the FY2021–FY2023 lists, #77 in FY2024 and #47 in FY2025; up 42 since Jul 2024–Jun 2025.
50	Agape Encounters, LLC Top agencies DOI (Department of the Interior)	$372,664	0.3%	Rank history: not on the FY2021–FY2024 lists and #41 in FY2025; new, not ranked in Jul 2024–Jun 2025.
51	RTX Corporation Through Hamilton Sundstrand Corporation Top agencies Navy (Department of the Navy)	$370,000	0.3%	Rank history: #37 in FY2021, not on the FY2022–FY2023 lists, #96 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
52	U.s. Naval Plumbing LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$366,690	0.3%	Rank history: #73 in FY2021, not on the FY2022–FY2023 lists, #94 in FY2024 and #30 in FY2025; down 14 since Jul 2024–Jun 2025.
53	Arctic Slope Regional Corporation Through Asrc Federal Facilities Logistics, LLC Top agencies DLA (Defense Logistics Agency)	$366,258	0.3%	Rank history: not on the FY2021–FY2025 lists; up 433 since Jul 2024–Jun 2025.
54	Lapis Makine Ticaret Anonim Sirketi Top agencies DLA (Defense Logistics Agency)	$358,400	0.3%	Rank history: not on the FY2021–FY2023 lists, #9 in FY2024 and #12 in FY2025; down 46 since Jul 2024–Jun 2025.
55	Cepeda Associates, Inc. Top agencies DLA (Defense Logistics Agency)	$346,326	0.3%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; up 80 since Jul 2024–Jun 2025.
56	Blue Group LLC Top agencies DLA (Defense Logistics Agency)	$334,502	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
57	Safran Electrical Components Canada Inc. Top agencies DLA (Defense Logistics Agency)	$324,466	0.3%	Rank history: not on the FY2021–FY2024 lists and #71 in FY2025; up 11 since Jul 2024–Jun 2025.
58	United Site Services of Nevada, Inc. Top agencies Army (Department of the Army)	$311,546	0.3%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and #45 in FY2025; down 5 since Jul 2024–Jun 2025.
59	Allied Pacific Environmental Consulting Top agencies USAF (Department of the Air Force)	$300,312	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
60	BIO Response Solutions Inc Top agencies Army (Department of the Army)	$288,332	0.3%	Rank history: not on the FY2021–FY2023 lists, #1 in FY2024 and not on the FY2025 list; down 59 since Jul 2024–Jun 2025.
61	Apex Pinnacle Corp Top agencies DLA (Defense Logistics Agency)	$274,999	0.2%	Rank history: not on the FY2021–FY2022 lists, #71 in FY2023, not on the FY2024 list and #29 in FY2025; down 9 since Jul 2024–Jun 2025.
62	Kington Deluxe Toilet Hire SW Ltd Top agencies USAF (Department of the Air Force)	$274,647	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
63	ETP Procurement LLC Top agencies DLA (Defense Logistics Agency)	$274,140	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
64	Radice Enterprises, LLC Top agencies DOJ (Department of Justice)	$260,000	0.2%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; down 10 since Jul 2024–Jun 2025.
65	Hoosier Industrial Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$255,100	0.2%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; up 60 since Jul 2024–Jun 2025.
66	J.G.B. Enterprises Inc. Through Echelon Supply and Service, Inc. Top agencies DLA (Defense Logistics Agency)	$250,959	0.2%	Rank history: not on the FY2021–FY2025 lists; up 104 since Jul 2024–Jun 2025.
67	Valad Electric Heating Corp. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$242,686	0.2%	Rank history: #99 in FY2021, #76 in FY2022, not on the FY2023 list, #59 in FY2024 and #74 in FY2025; down 6 since Jul 2024–Jun 2025.
68	Douglas Food Stores Inc. Top agencies DLA (Defense Logistics Agency)	$242,506	0.2%	Rank history: not on the FY2021–FY2025 lists; up 39 since Jul 2024–Jun 2025.
69	Southern Automotive Wholesalers, Inc. Top agencies DLA (Defense Logistics Agency)	$242,239	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
70	Active Gear Company of Canada Limited Top agencies DLA (Defense Logistics Agency)	$237,949	0.2%	Rank history: not on the FY2021–FY2025 lists; up 154 since Jul 2024–Jun 2025.
71	International Thermal Research Ltd Top agencies DLA (Defense Logistics Agency)	$236,945	0.2%	Rank history: #38 in FY2021, #16 in FY2022, #47 in FY2023, #36 in FY2024 and #69 in FY2025; up 24 since Jul 2024–Jun 2025.
72	Atlas Supply Company, Inc. Top agencies DLA (Defense Logistics Agency)	$233,588	0.2%	Rank history: not on the FY2021–FY2023 lists, #100 in FY2024 and not on the FY2025 list; up 85 since Jul 2024–Jun 2025.
73	Power Plus International, Inc. Top agencies DOJ (Department of Justice) USDA (Department of Agriculture)	$227,588	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
74	Federal Contracts LLC Top agencies Army (Department of the Army)	$218,520	0.2%	Rank history: not on the FY2021–FY2024 lists and #67 in FY2025; new, not ranked in Jul 2024–Jun 2025.
75	Westsim Engineering, Inc. Top agencies DLA (Defense Logistics Agency)	$217,935	0.2%	Rank history: not on the FY2021 list, #74 in FY2022, not on the FY2023–FY2024 lists and #66 in FY2025; up 21 since Jul 2024–Jun 2025.
76	Lewis-Smith Corporation Top agencies DOJ (Department of Justice)	$217,500	0.2%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; new, not ranked in Jul 2024–Jun 2025.
77	Kyodo Shipping & Trading Corp USA Top agencies DLA (Defense Logistics Agency)	$216,400	0.2%	Rank history: not on the FY2021–FY2025 lists; up 263 since Jul 2024–Jun 2025.
78	Morning Star Industries Inc. Top agencies DOI (Department of the Interior)	$213,880	0.2%	Rank history: #29 in FY2021, not on the FY2022–FY2024 lists and #34 in FY2025; down 29 since Jul 2024–Jun 2025.
79	JEM Engineering Solutions Top agencies USAF (Department of the Air Force)	$202,923	0.2%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; new, not ranked in Jul 2024–Jun 2025.
80	United Precision Corporation Top agencies Navy (Department of the Navy)	$198,675	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
81	Kijero, LLC Top agencies Navy (Department of the Navy)	$190,300	0.2%	Rank history: not on the FY2021–FY2025 lists; up 254 since Jul 2024–Jun 2025.
82	Reworld Solutions, LLC Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$188,253	0.2%	Rank history: not on the FY2021–FY2024 lists and #72 in FY2025; down 9 since Jul 2024–Jun 2025.
83	Viking Incorporated Top agencies DLA (Defense Logistics Agency)	$185,614	0.2%	Rank history: not on the FY2021–FY2025 lists; up 196 since Jul 2024–Jun 2025.
84	Independent Hardware Inc. Top agencies DLA (Defense Logistics Agency)	$183,810	0.2%	Rank history: #34 in FY2021, #44 in FY2022, #97 in FY2023, #71 in FY2024 and not on the FY2025 list; up 214 since Jul 2024–Jun 2025.
85	Bighorn Solutions LLC Top agencies DLA (Defense Logistics Agency)	$181,151	0.2%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; down 22 since Jul 2024–Jun 2025.
86	System High Corporation Top agencies USAF (Department of the Air Force)	$179,707	0.2%	Rank history: not on the FY2021–FY2024 lists and #78 in FY2025; new, not ranked in Jul 2024–Jun 2025.
87	Compumeric Engineering, Inc. Top agencies DOI (Department of the Interior)	$179,617	0.2%	Rank history: not on the FY2021–FY2022 lists, #54 in FY2023, #47 in FY2024 and #100 in FY2025; up 79 since Jul 2024–Jun 2025.
88	Phoenix Trading Inc. Top agencies DLA (Defense Logistics Agency)	$176,669	0.2%	Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; down 65 since Jul 2024–Jun 2025.
89	Steel LLC Top agencies USDA (Department of Agriculture)	$176,504	0.2%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; new, not ranked in Jul 2024–Jun 2025.
90	Indeeco LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$176,343	0.2%	Rank history: not on the FY2021–FY2024 lists and #33 in FY2025; down 47 since Jul 2024–Jun 2025.
91	F.k. Horn GMBH & Co. Kg-Bauunternehmung Top agencies USAF (Department of the Air Force)	$173,640	0.2%	Rank history: not on the FY2021–FY2023 lists, #51 in FY2024 and #83 in FY2025; down 36 since Jul 2024–Jun 2025.
92	2Lyons Aerospace LLC Top agencies DLA (Defense Logistics Agency)	$166,898	0.1%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2023 and not on the FY2024–FY2025 lists; up 17 since Jul 2024–Jun 2025.
93	Vehicle Maintenance Program Inc. Top agencies DLA (Defense Logistics Agency)	$163,772	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
94	WB Waste Solutions, LLC Top agencies National Gallery of Art	$163,018	0.1%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; up 4 since Jul 2024–Jun 2025.
95	Salem Manufacturing & Sales Inc. Top agencies DLA (Defense Logistics Agency)	$161,210	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
96	Cosmex TECH LLC Top agencies DLA (Defense Logistics Agency)	$159,800	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
97	TNL Sales LLC Top agencies DLA (Defense Logistics Agency)	$159,101	0.1%	Rank history: not on the FY2021 list, #39 in FY2022, #94 in FY2023 and not on the FY2024–FY2025 lists; up 144 since Jul 2024–Jun 2025.
98	Gasparini John W Inc. Top agencies DOJ (Department of Justice)	$159,068	0.1%	Rank history: not on the FY2021–FY2025 lists; up 115 since Jul 2024–Jun 2025.
99	Monmouth Solutions, Inc. Top agencies Navy (Department of the Navy)	$158,618	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
100	Supherb Logistics LLC Top agencies DLA (Defense Logistics Agency)	$158,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; new, not ranked in Jul 2024–Jun 2025.

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100 of 545 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC 45

Code	Net obligations	Largest contractor
4520 Space and Water Heating Equipment	$50,279,107	HDT Expeditionary Systems Inc.
4510 Plumbing Fixtures and Accessories	$37,275,795	S & K Aerospace, LLC
4540 Waste Disposal Equipment	$17,202,703	Flightfab, Inc.
4530 Fuel Burning Equipment Units	$3,478,344	Mckenzie Construction & Site Development LLC

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 $115 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 45 contractors in Jul 2025–Jun 2026?

1. HDT Expeditionary Systems Inc. ($10.7M), 2. S & K Aerospace, LLC ($7.74M), 3. Flightfab, Inc. ($5.13M), 4. Atlantic Diving Supply, Inc. ($3.76M), 5. Lockheed Martin Corporation ($3.62M), 6. Argo Turboserve Corporation ($3.54M), 7. Advanced Technology International ($3.43M), 8. W S Darley & Co ($3.3M), 9. Windward Enterprises, LLC ($2.83M), 10. Evac North America Inc ($2.69M).

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