Top 100 Contractors in PSC 4420: Heat Exchangers and Steam Condensers, Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	ECI Defense Group, Inc. 2 awardees Top agencies DLA (Defense Logistics Agency)	$9,574,330	18.7%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2023, #11 in FY2024 and #1 in FY2025; up 5 since Aug 2024–Jul 2025.
2	Aqua-Chem, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$8,205,165	16.0%	Rank history: #2 in FY2021, #2 in FY2022, #3 in FY2023, #3 in FY2024 and #4 in FY2025; up 1 since Aug 2024–Jul 2025.
3	Arctic Slope Regional Corporation Through Asrc Federal Facilities Logistics LLC Top agencies Navy (Department of the Navy)	$4,257,350	8.3%	Rank history: not on the FY2021–FY2024 lists and #2 in FY2025; new, not ranked in Aug 2024–Jul 2025.
4	Bollinger Shipyards Lockport, L.L.C. Through Chand, L.L.C. Top agencies DLA (Defense Logistics Agency)	$3,318,438	6.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
5	Atlantic Diving Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$2,407,413	4.7%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; up 53 since Aug 2024–Jul 2025.
6	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$2,298,585	4.5%	Rank history: #7 in FY2021, #12 in FY2022, #4 in FY2023, #4 in FY2024 and #3 in FY2025; down 5 since Aug 2024–Jul 2025.
7	Argo Turboserve Corporation Top agencies DLA (Defense Logistics Agency)	$1,353,307	2.6%	Rank history: #12 in FY2021, #17 in FY2022, #5 in FY2023, #8 in FY2024 and #10 in FY2025; up 1 since Aug 2024–Jul 2025.
8	H C Merchandisers, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,340,801	2.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
9	Mactaggart, Scott & Co. Ltd Top agencies DHS (Department of Homeland Security)	$1,029,780	2.0%	Rank history: not on the FY2021–FY2024 lists and #8 in FY2025; new, not ranked in Aug 2024–Jul 2025.
10	Renk Systems Corp Top agencies Navy (Department of the Navy)	$1,025,552	2.0%	Rank history: not on the FY2021–FY2023 lists, #1 in FY2024 and #11 in FY2025; down 1 since Aug 2024–Jul 2025.
11	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,023,597	2.0%	Rank history: #4 in FY2021, #43 in FY2022, not on the FY2023 list, #18 in FY2024 and #21 in FY2025; up 28 since Aug 2024–Jul 2025.
12	S I T Corporation Top agencies DLA (Defense Logistics Agency)	$1,005,663	2.0%	Rank history: #8 in FY2021, #31 in FY2022, #6 in FY2023, #10 in FY2024 and #31 in FY2025; up 18 since Aug 2024–Jul 2025.
13	Sogen Company, Inc. Top agencies DLA (Defense Logistics Agency)	$847,014	1.7%	Rank history: not on the FY2021–FY2023 lists, #68 in FY2024 and #59 in FY2025; up 40 since Aug 2024–Jul 2025.
14	Heico Corp Through Pioneer Industries, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$723,960	1.4%	Rank history: not on the FY2021–FY2024 lists and #17 in FY2025; new, not ranked in Aug 2024–Jul 2025.
15	Par Defense Industries, LLC Top agencies DLA (Defense Logistics Agency)	$642,784	1.3%	Rank history: #47 in FY2021, #65 in FY2022, not on the FY2023–FY2024 lists and #22 in FY2025; up 5 since Aug 2024–Jul 2025.
16	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency)	$564,977	1.1%	Rank history: #10 in FY2021, #33 in FY2022, #10 in FY2023, #70 in FY2024 and #33 in FY2025; up 24 since Aug 2024–Jul 2025.
17	Arhab LLC Top agencies Army (Department of the Army) DOI (Department of the Interior) DHS (Department of Homeland Security)	$564,867	1.1%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; new, not ranked in Aug 2024–Jul 2025.
18	Separator Spares & Equipment LLC Top agencies DLA (Defense Logistics Agency)	$563,120	1.1%	Rank history: not on the FY2021 list, #40 in FY2022, #38 in FY2023, #21 in FY2024 and #24 in FY2025; up 10 since Aug 2024–Jul 2025.
19	Fluid Handling LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$562,766	1.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
20	Phoenix Trading Inc. Top agencies DLA (Defense Logistics Agency)	$517,063	1.0%	Rank history: #11 in FY2021, #16 in FY2022, #21 in FY2023, #67 in FY2024 and #56 in FY2025; up 51 since Aug 2024–Jul 2025.
21	Fincantieri Marine Systems North America, Inc. Top agencies DLA (Defense Logistics Agency)	$426,837	0.8%	Rank history: not on the FY2021–FY2023 lists, #36 in FY2024 and #99 in FY2025; up 78 since Aug 2024–Jul 2025.
22	Derbyshire Machine & Tool Co Top agencies DLA (Defense Logistics Agency)	$387,870	0.8%	Rank history: #78 in FY2021, not on the FY2022 list, #66 in FY2023, #77 in FY2024 and #48 in FY2025; up 28 since Aug 2024–Jul 2025.
23	Derrah Morrison Enterprises LLC Top agencies VA (Department of Veterans Affairs)	$350,915	0.7%	Rank history: not on the FY2021–FY2024 lists and #23 in FY2025; new, not ranked in Aug 2024–Jul 2025.
24	Evoqua Water Technologies LLC Through Fluid Handling LLC Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$324,436	0.6%	Rank history: not on the FY2021–FY2023 lists, #14 in FY2024 and #9 in FY2025; down 17 since Aug 2024–Jul 2025.
25	Lynchburg Air Preheater Corporation Top agencies DOI (Department of the Interior) Commerce (Department of Commerce)	$227,438	0.4%	Rank history: #25 in FY2021, #13 in FY2022, not on the FY2023 list, #6 in FY2024 and #18 in FY2025; down 15 since Aug 2024–Jul 2025.
26	Johnson Controls Federal Systems, LLC Through Johnson Controls Navy Systems, LLC Top agencies DLA (Defense Logistics Agency)	$200,801	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
27	Westchester Plastics LLC Top agencies Army (Department of the Army)	$191,696	0.4%	Rank history: not on the FY2021–FY2023 lists, #30 in FY2024 and #34 in FY2025; new, not ranked in Aug 2024–Jul 2025.
28	Tomahawk Sourcing LLC Top agencies DLA (Defense Logistics Agency)	$175,133	0.3%	Rank history: #19 in FY2021, not on the FY2022 list, #52 in FY2023, #45 in FY2024 and #12 in FY2025; down 11 since Aug 2024–Jul 2025.
29	NGH Retail LLC Top agencies DLA (Defense Logistics Agency)	$173,088	0.3%	Rank history: #26 in FY2021, #54 in FY2022, #34 in FY2023, #41 in FY2024 and #35 in FY2025; up 15 since Aug 2024–Jul 2025.
30	Campbell-Sevey Inc. Top agencies VA (Department of Veterans Affairs)	$167,898	0.3%	Rank history: #96 in FY2021, #56 in FY2022, not on the FY2023–FY2024 lists and #68 in FY2025; new, not ranked in Aug 2024–Jul 2025.
31	Wizard Technologies Inc. Top agencies DLA (Defense Logistics Agency)	$165,770	0.3%	Rank history: not on the FY2021–FY2025 lists; up 84 since Aug 2024–Jul 2025.
32	Etairos Hvac JV, LLC Top agencies DOJ (Department of Justice)	$161,154	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
33	Powerhouse Equipment & Engineering Co Inc. Top agencies Navy (Department of the Navy)	$155,800	0.3%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; new, not ranked in Aug 2024–Jul 2025.
34	FAD Pennsylvania Inc Top agencies Navy (Department of the Navy)	$155,127	0.3%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #51 in FY2025; down 13 since Aug 2024–Jul 2025.
35	Lake Shore Systems Inc. Top agencies Navy (Department of the Navy)	$151,318	0.3%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; new, not ranked in Aug 2024–Jul 2025.
36	Formica Industries LLC Top agencies DLA (Defense Logistics Agency)	$143,600	0.3%	Rank history: #32 in FY2021, #71 in FY2022, not on the FY2023–FY2024 lists and #75 in FY2025; up 39 since Aug 2024–Jul 2025.
37	Trane U.s. Inc. Top agencies DOI (Department of the Interior)	$142,678	0.3%	Rank history: not on the FY2021–FY2023 lists, #84 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
38	Apex Pinnacle Corp Top agencies DLA (Defense Logistics Agency)	$135,035	0.3%	Rank history: not on the FY2021–FY2024 lists and #40 in FY2025; new, not ranked in Aug 2024–Jul 2025.
39	Kay Kay LLC Top agencies DOJ (Department of Justice)	$133,303	0.3%	Rank history: not on the FY2021–FY2023 lists, #100 in FY2024 and #74 in FY2025; up 24 since Aug 2024–Jul 2025.
40	Carrier Australia PTY Ltd Top agencies DOS (Department of State)	$131,024	0.3%	Rank history: not on the FY2021–FY2024 lists and #42 in FY2025; new, not ranked in Aug 2024–Jul 2025.
41	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency)	$123,070	0.2%	Rank history: not on the FY2021–FY2022 lists, #17 in FY2023, not on the FY2024 list and #29 in FY2025; down 12 since Aug 2024–Jul 2025.
42	Percipient Manufacturing, LLC Top agencies DLA (Defense Logistics Agency)	$117,780	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
43	Service Machine Shop, Incorporated	$115,000	0.2%	Rank history: not on the FY2021 list, #49 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
44	Leonardo S.p.A. Through Laurel Technologies Partnership Top agencies Navy (Department of the Navy)	$112,952	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
45	Larkos Packing and Distribution Inc. Top agencies DLA (Defense Logistics Agency)	$111,409	0.2%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023, #62 in FY2024 and not on the FY2025 list; up 63 since Aug 2024–Jul 2025.
46	Seventh Genius LLC Top agencies DOI (Department of the Interior)	$108,600	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
47	The Boeing Company Top agencies USAF (Department of the Air Force)	$106,675	0.2%	Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; down 10 since Aug 2024–Jul 2025.
48	Pride Electronics Inc. Top agencies DLA (Defense Logistics Agency)	$106,400	0.2%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; new, not ranked in Aug 2024–Jul 2025.
49	Limco-Piedmont Inc. Through Limco Airepair Inc. Top agencies DLA (Defense Logistics Agency)	$104,112	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
50	Aero Precision Industries LLC Through Allclear Aerospace & Defense, Inc. Top agencies Navy (Department of the Navy)	$101,386	0.2%	Rank history: #17 in FY2021, not on the FY2022–FY2023 lists, #29 in FY2024 and #39 in FY2025; new, not ranked in Aug 2024–Jul 2025.
51	Mainstream Fluid & Air LLC Top agencies Treasury (Department of the Treasury)	$97,390	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
52	Irsa Umar Top agencies USAF (Department of the Air Force)	$96,536	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
53	King & George, LLC Through Invicta Global, LLC Top agencies Navy (Department of the Navy)	$93,534	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
54	Industrial Heat Technologies, Inc. Top agencies DOJ (Department of Justice)	$87,789	0.2%	Rank history: not on the FY2021 list, #88 in FY2022, #54 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
55	R.l. Deppmann Company, LLC Top agencies DOJ (Department of Justice)	$86,094	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
56	All-Safe Inc. Top agencies DLA (Defense Logistics Agency)	$73,848	0.1%	Rank history: #60 in FY2021, not on the FY2022 list, #23 in FY2023, #53 in FY2024 and #49 in FY2025; down 9 since Aug 2024–Jul 2025.
57	Bluegrass Hydronics & Pump LLC Top agencies DOJ (Department of Justice)	$70,805	0.1%	Rank history: #31 in FY2021 and not on the FY2022–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
58	Confident Controls Usa, Inc. Top agencies HHS (Department of Health and Human Services)	$69,235	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
59	Metro Reliable Resources Corp. Top agencies DLA (Defense Logistics Agency)	$59,998	0.1%	Rank history: #30 in FY2021, not on the FY2022 list, #92 in FY2023, #42 in FY2024 and #76 in FY2025; up 28 since Aug 2024–Jul 2025.
60	PC Vision Inc Top agencies USAF (Department of the Air Force)	$58,750	0.1%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; new, not ranked in Aug 2024–Jul 2025.
61	Integrated Procurement Technologies Top agencies DLA (Defense Logistics Agency)	$54,759	0.1%	Rank history: #14 in FY2021, not on the FY2022–FY2024 lists and #7 in FY2025; new, not ranked in Aug 2024–Jul 2025.
62	Comprex, LLC Top agencies USAF (Department of the Air Force)	$50,325	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
63	Hydraulics International, Inc. Top agencies DLA (Defense Logistics Agency)	$46,830	0.1%	Rank history: not on the FY2021–FY2023 lists, #98 in FY2024 and #61 in FY2025; down 6 since Aug 2024–Jul 2025.
64	Defense Maritime Solutions, Inc. Top agencies Navy (Department of the Navy)	$46,247	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
65	Cummins Inc. Top agencies DLA (Defense Logistics Agency)	$46,168	0.1%	Rank history: #77 in FY2021, #58 in FY2022, #79 in FY2023, not on the FY2024 list and #82 in FY2025; new, not ranked in Aug 2024–Jul 2025.
66	Nevada Boiler Parts LLC Top agencies VA (Department of Veterans Affairs)	$46,130	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
67	Alfa Laval U.S. Holding Inc. 2 awardees, including Alfa Laval Inc. and Tranter Inc. Top agencies Navy (Department of the Navy) Commerce (Department of Commerce)	$45,469	0.1%	Rank history: not on the FY2021–FY2024 lists and #6 in FY2025; down 63 since Aug 2024–Jul 2025.
68	Fotofab, LLC Top agencies NASA (National Aeronautics and Space Administration)	$43,788	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
69	Grand Industries Inc. Top agencies DLA (Defense Logistics Agency)	$43,501	0.1%	Rank history: not on the FY2021–FY2023 lists, #99 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
70	Russ Equipment Co., Incorporated Top agencies DHS (Department of Homeland Security)	$42,000	0.1%	Rank history: #66 in FY2021 and not on the FY2022–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
71	Quantum Marine Engineering Inc. Top agencies DHS (Department of Homeland Security)	$41,028	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
72	Paul Mueller Company Top agencies Navy (Department of the Navy)	$39,207	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
73	Ives Equipment, LLC Top agencies DHS (Department of Homeland Security)	$36,818	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
74	Unique Technology Systems LLC Top agencies DHS (Department of Homeland Security)	$34,795	0.1%	Rank history: not on the FY2021–FY2024 lists and #78 in FY2025; new, not ranked in Aug 2024–Jul 2025.
75	GI Corporation Top agencies DLA (Defense Logistics Agency)	$34,396	0.1%	Rank history: not on the FY2021–FY2023 lists, #64 in FY2024 and #63 in FY2025; down 13 since Aug 2024–Jul 2025.
76	Bernard J. Mulcahy Company, Inc. Top agencies VA (Department of Veterans Affairs)	$33,934	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
77	Govparts LLC Top agencies DLA (Defense Logistics Agency)	$32,736	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
78	Ray Blackman Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$29,704	0.1%	Rank history: #82 in FY2021, #30 in FY2022, not on the FY2023–FY2024 lists and #47 in FY2025; down 32 since Aug 2024–Jul 2025.
79	Playpower LT Farmington Inc. Through API Heat Transfer Inc. Top agencies DHS (Department of Homeland Security)	$28,706	0.1%	Rank history: not on the FY2021–FY2024 lists and #26 in FY2025; down 53 since Aug 2024–Jul 2025.
80	Performance Diesel Inc. Top agencies DHS (Department of Homeland Security)	$28,700	0.1%	Rank history: not on the FY2021 list, #37 in FY2022, not on the FY2023 list, #72 in FY2024 and not on the FY2025 list; down 11 since Aug 2024–Jul 2025.
81	Jenks Inc. Top agencies DOS (Department of State)	$26,173	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
82	Boyd Corporation (Woburn) Inc. Top agencies Navy (Department of the Navy)	$24,998	<0.1%	Rank history: #20 in FY2021 and not on the FY2022–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
83	WKF (Friedman) Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$24,528	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
84	Delval Equipment Corporation Top agencies USAF (Department of the Air Force)	$23,892	<0.1%	Rank history: not on the FY2021–FY2024 lists and #83 in FY2025; new, not ranked in Aug 2024–Jul 2025.
85	Womack Machine Supply Co., LLC Top agencies DLA (Defense Logistics Agency)	$23,471	<0.1%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; up 3 since Aug 2024–Jul 2025.
86	Adrick Marine Group, Inc. Top agencies DHS (Department of Homeland Security)	$19,851	<0.1%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; new, not ranked in Aug 2024–Jul 2025.
87	Gardner Denver Nash LLC Top agencies DLA (Defense Logistics Agency)	$19,800	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
88	BMT - USA , LLC Top agencies USDA (Department of Agriculture)	$19,035	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
89	Steris Corporation Top agencies VA (Department of Veterans Affairs)	$18,945	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
90	Combustion Service & Equipment Co Top agencies VA (Department of Veterans Affairs)	$18,855	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
91	3075109 Canada Inc. Top agencies Army (Department of the Army)	$18,464	<0.1%	Rank history: #28 in FY2021, not on the FY2022–FY2024 lists and #88 in FY2025; new, not ranked in Aug 2024–Jul 2025.
92	Hvac Distributors Inc. Top agencies DOJ (Department of Justice)	$18,293	<0.1%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; down 37 since Aug 2024–Jul 2025.
93	Fleurs Enterprises LLC Top agencies VA (Department of Veterans Affairs)	$16,890	<0.1%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; new, not ranked in Aug 2024–Jul 2025.
94	Mahan's Thermal Products, Inc. Top agencies DHS (Department of Homeland Security)	$16,786	<0.1%	Rank history: #69 in FY2021, not on the FY2022 list, #65 in FY2023, #74 in FY2024 and not on the FY2025 list; down 21 since Aug 2024–Jul 2025.
95	Nationwide Supplies, L.P. Top agencies DOS (Department of State)	$16,713	<0.1%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; up 29 since Aug 2024–Jul 2025.
96	R.w. Fernstrum & Company Top agencies Navy (Department of the Navy)	$16,171	<0.1%	Rank history: #98 in FY2021, not on the FY2022 list, #59 in FY2023, #38 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
97	Parks & Docks Supply Company LLC Top agencies DLA (Defense Logistics Agency)	$15,391	<0.1%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; new, not ranked in Aug 2024–Jul 2025.
98	Multistack LLC Top agencies DOS (Department of State)	$14,780	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
99	American Chiller Service, Inc. Top agencies Treasury (Department of the Treasury)	$13,864	<0.1%	Rank history: not on the FY2021–FY2023 lists, #17 in FY2024 and #98 in FY2025; down 74 since Aug 2024–Jul 2025.
100	ZCS Interconnect, LLC Top agencies DLA (Defense Logistics Agency)	$12,250	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 12 since Aug 2024–Jul 2025.

How this ranking works

• Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
• Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $51.1 million obligated before deobligations, so they never pass 100%.
• Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
• Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
• Rank changes compare with Aug 2024–Jul 2025. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
• Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers