Top 100 Contractors in NAICS 334512: Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use, Jul 2025–Jun 2026

Name: Top 100 Contractors in NAICS 334512: Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use, 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 NAICS 334512 contract dollars from July 2025 through June 2026

Contract obligations: $55,820,902 Net of deobligations, by contracts coded NAICS 334512
Contractors: 372 Parent companies with an obligation
Largest contractor: The Prospective Group, LLC $5.45 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	The Prospective Group, LLC Top agencies DOS (Department of State)	$5,451,650	9.3%	Rank history: not on the FY2021 list, #45 in FY2022, #4 in FY2023, #2 in FY2024 and #1 in FY2025; up 1 since Jul 2024–Jun 2025.
2	Signet Technologies, Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts) DOJ (Department of Justice) Navy (Department of the Navy)	$4,367,003	7.5%	Rank history: #2 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #2 in FY2025; down 1 since Jul 2024–Jun 2025.
3	Laurus Systems Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$2,400,445	4.1%	Rank history: #26 in FY2021, #31 in FY2022, #34 in FY2023, #10 in FY2024 and #4 in FY2025; up 13 since Jul 2024–Jun 2025.
4	System High Corporation Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force) Army (Department of the Army)	$2,137,422	3.6%	Rank history: #1 in FY2021, #6 in FY2022, #5 in FY2023, #3 in FY2024 and #5 in FY2025; unchanged since Jul 2024–Jun 2025.
5	Transaero, Inc. Top agencies DLA (Defense Logistics Agency)	$2,080,905	3.6%	Rank history: #33 in FY2021, #25 in FY2022, #29 in FY2023, #49 in FY2024 and #15 in FY2025; up 48 since Jul 2024–Jun 2025.
6	Alabama Controls, Inc. Top agencies USAF (Department of the Air Force)	$1,744,113	3.0%	Rank history: not on the FY2021–FY2023 lists, #15 in FY2024 and #7 in FY2025; up 7 since Jul 2024–Jun 2025.
7	MMC Metrology Lab, Inc. Top agencies DLA (Defense Logistics Agency)	$1,513,263	2.6%	Rank history: #15 in FY2021, #27 in FY2022, #22 in FY2023, #23 in FY2024 and #12 in FY2025; up 10 since Jul 2024–Jun 2025.
8	Four Winds Mechanical HTC / AC Inc. Top agencies Army (Department of the Army)	$1,484,559	2.5%	Rank history: not on the FY2021–FY2024 lists and #8 in FY2025; new, not ranked in Jul 2024–Jun 2025.
9	Daikin Applied Americas Inc Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) DOI (Department of the Interior)	$1,344,013	2.3%	Rank history: #35 in FY2021, #5 in FY2022, #14 in FY2023, #9 in FY2024 and #3 in FY2025; down 6 since Jul 2024–Jun 2025.
10	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency)	$1,327,104	2.3%	Rank history: #10 in FY2021, #17 in FY2022, #26 in FY2023, #24 in FY2024 and #11 in FY2025; up 1 since Jul 2024–Jun 2025.
11	Cam-Dex Corporation Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Treasury (Department of the Treasury)	$1,303,625	2.2%	Rank history: #5 in FY2021, #9 in FY2022, #9 in FY2023, #4 in FY2024 and #13 in FY2025; up 1 since Jul 2024–Jun 2025.
12	Utility Systems Solutions, Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice)	$1,214,151	2.1%	Rank history: #6 in FY2021, #18 in FY2022, #8 in FY2023, #13 in FY2024 and #9 in FY2025; down 4 since Jul 2024–Jun 2025.
13	Honeywell International Inc. 2 awardees, including Honeywell Building Solutions GMBH Top agencies Army (Department of the Army)	$909,857	1.6%	Rank history: #67 in FY2021, #60 in FY2022, not on the FY2023 list, #27 in FY2024 and #21 in FY2025; down 4 since Jul 2024–Jun 2025.
14	Windward Enterprises, LLC Top agencies DLA (Defense Logistics Agency)	$863,166	1.5%	Rank history: #13 in FY2021, #26 in FY2022, #11 in FY2023, #41 in FY2024 and #59 in FY2025; up 42 since Jul 2024–Jun 2025.
15	Ldia Holdings, LLC Top agencies USAF (Department of the Air Force)	$860,471	1.5%	Rank history: #17 in FY2021, #4 in FY2022, #25 in FY2023, #19 in FY2024 and #23 in FY2025; up 21 since Jul 2024–Jun 2025.
16	Rev-Cap Company, Inc. Top agencies DLA (Defense Logistics Agency)	$806,468	1.4%	Rank history: not on the FY2021 list, #80 in FY2022, not on the FY2023 list, #55 in FY2024 and #41 in FY2025; up 32 since Jul 2024–Jun 2025.
17	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency)	$778,636	1.3%	Rank history: #42 in FY2021, #86 in FY2022, #56 in FY2023, #17 in FY2024 and #16 in FY2025; up 2 since Jul 2024–Jun 2025.
18	Johnson Controls Security Solutions LLC Through Johnson Controls Inc. Top agencies DHA (Defense Health Agency)	$755,494	1.3%	Rank history: #9 in FY2021, #2 in FY2022, #23 in FY2023, #33 in FY2024 and #31 in FY2025; new, not ranked in Jul 2024–Jun 2025.
19	Trofholz Technologies, Inc. Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$738,303	1.3%	Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; new, not ranked in Jul 2024–Jun 2025.
20	Security & Energy Technologies Corporation Top agencies Army (Department of the Army) DOJ (Department of Justice)	$638,892	1.1%	Rank history: #16 in FY2021, #38 in FY2022, #33 in FY2023, #53 in FY2024 and #37 in FY2025; up 29 since Jul 2024–Jun 2025.
21	Becklar LLC Top agencies VA (Department of Veterans Affairs)	$598,820	1.0%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
22	Lynxspring, Inc. Top agencies GSA (General Services Administration)	$578,537	1.0%	Rank history: not on the FY2021–FY2024 lists and #22 in FY2025; new, not ranked in Jul 2024–Jun 2025.
23	Digis Corporation Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$557,052	1.0%	Rank history: not on the FY2021 list, #75 in FY2022, #20 in FY2023, not on the FY2024 list and #36 in FY2025; up 174 since Jul 2024–Jun 2025.
24	LKD Aerospace, LLC Top agencies DLA (Defense Logistics Agency)	$546,906	0.9%	Rank history: not on the FY2021–FY2023 lists, #50 in FY2024 and #27 in FY2025; up 2 since Jul 2024–Jun 2025.
25	ECI Defense Group, Inc. 2 awardees Top agencies DLA (Defense Logistics Agency)	$540,214	0.9%	Rank history: #80 in FY2021, #82 in FY2022, #27 in FY2023, #47 in FY2024 and #46 in FY2025; up 32 since Jul 2024–Jun 2025.
26	Argo Turboserve Corporation Top agencies DLA (Defense Logistics Agency)	$521,663	0.9%	Rank history: #7 in FY2021, #12 in FY2022, #17 in FY2023, #22 in FY2024 and #14 in FY2025; down 12 since Jul 2024–Jun 2025.
27	Integrated Development & Manufacturing Company Top agencies USDA (Department of Agriculture) Navy (Department of the Navy)	$498,793	0.9%	Rank history: #94 in FY2021, not on the FY2022 list, #70 in FY2023, not on the FY2024 list and #25 in FY2025; up 115 since Jul 2024–Jun 2025.
28	H C Merchandisers, Inc. Top agencies DLA (Defense Logistics Agency)	$481,310	0.8%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023 and not on the FY2024–FY2025 lists; up 123 since Jul 2024–Jun 2025.
29	Veracity Trading Limited Top agencies DHA (Defense Health Agency)	$481,289	0.8%	Rank history: not on the FY2021–FY2024 lists and #26 in FY2025; new, not ranked in Jul 2024–Jun 2025.
30	Moog Inc. Top agencies Army (Department of the Army)	$475,304	0.8%	Rank history: not on the FY2021 list, #8 in FY2022, #21 in FY2023, #38 in FY2024 and #19 in FY2025; up 10 since Jul 2024–Jun 2025.
31	ABM Facility Support Services, LLC Top agencies DOE (Department of Energy)	$473,636	0.8%	Rank history: not on the FY2021–FY2023 lists, #34 in FY2024 and #20 in FY2025; down 9 since Jul 2024–Jun 2025.
32	RJY Group LLC Top agencies VA (Department of Veterans Affairs)	$465,289	0.8%	Rank history: not on the FY2021 list, #24 in FY2022, #31 in FY2023, #16 in FY2024 and #34 in FY2025; up 2 since Jul 2024–Jun 2025.
33	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency)	$412,858	0.7%	Rank history: not on the FY2021 list, #16 in FY2022, #32 in FY2023, #39 in FY2024 and #45 in FY2025; down 4 since Jul 2024–Jun 2025.
34	Kieback & Peter GMBH & Co. KG Top agencies USAF (Department of the Air Force)	$397,367	0.7%	Rank history: not on the FY2021–FY2023 lists, #8 in FY2024 and #28 in FY2025; down 24 since Jul 2024–Jun 2025.
35	R & M Government Services Inc. Top agencies DLA (Defense Logistics Agency)	$391,725	0.7%	Rank history: #56 in FY2021, #98 in FY2022, not on the FY2023 list, #36 in FY2024 and #92 in FY2025; up 55 since Jul 2024–Jun 2025.
36	Peerless Electronics Inc. Top agencies DLA (Defense Logistics Agency)	$387,710	0.7%	Rank history: #32 in FY2021, #20 in FY2022, #13 in FY2023, #42 in FY2024 and #40 in FY2025; up 1 since Jul 2024–Jun 2025.
37	Midwest Security Services, Inc. Top agencies Army (Department of the Army)	$386,664	0.7%	Rank history: #30 in FY2021, not on the FY2022–FY2024 lists and #30 in FY2025; new, not ranked in Jul 2024–Jun 2025.
38	Jamaica Bearings Co., Inc. Top agencies DLA (Defense Logistics Agency)	$386,299	0.7%	Rank history: #12 in FY2021, #21 in FY2022, #19 in FY2023, #29 in FY2024 and #6 in FY2025; down 33 since Jul 2024–Jun 2025.
39	Moeller Instrument Company, Inc. Top agencies DLA (Defense Logistics Agency)	$339,876	0.6%	Rank history: #31 in FY2021, #48 in FY2022, #57 in FY2023, #57 in FY2024 and #52 in FY2025; up 34 since Jul 2024–Jun 2025.
40	Empire Avionics Corp. Top agencies DLA (Defense Logistics Agency)	$335,778	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
41	Pacific Scientific Company Top agencies DLA (Defense Logistics Agency)	$330,870	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
42	Datawatch Systems, Inc. Top agencies Treasury (Department of the Treasury) USITC (International Trade Commission) FMC (Federal Maritime Commission)	$320,285	0.5%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; up 52 since Jul 2024–Jun 2025.
43	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$319,561	0.5%	Rank history: not on the FY2021 list, #91 in FY2022, #58 in FY2023, #64 in FY2024 and #83 in FY2025; up 15 since Jul 2024–Jun 2025.
44	Par Defense Industries, LLC Top agencies DLA (Defense Logistics Agency)	$309,636	0.5%	Rank history: not on the FY2021–FY2023 lists, #63 in FY2024 and #47 in FY2025; up 15 since Jul 2024–Jun 2025.
45	Energy Systems Group, LLC Top agencies GSA (General Services Administration)	$298,117	0.5%	Rank history: not on the FY2021–FY2023 lists, #26 in FY2024 and #35 in FY2025; up 110 since Jul 2024–Jun 2025.
46	S I T Corporation Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$282,723	0.5%	Rank history: #71 in FY2021, not on the FY2022–FY2023 lists, #12 in FY2024 and #42 in FY2025; down 15 since Jul 2024–Jun 2025.
47	Chase Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$281,231	0.5%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; up 55 since Jul 2024–Jun 2025.
48	Ems Technologies, LLC	$277,638	0.5%	Rank history: not on the FY2021–FY2023 lists, #65 in FY2024 and #65 in FY2025; up 19 since Jul 2024–Jun 2025.
49	Kessler Thermometer Corp Top agencies DLA (Defense Logistics Agency)	$275,872	0.5%	Rank history: not on the FY2021–FY2023 lists, #96 in FY2024 and #68 in FY2025; up 28 since Jul 2024–Jun 2025.
50	Hydro-Aire Aerospace Corp Top agencies DLA (Defense Logistics Agency)	$266,115	0.5%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; up 110 since Jul 2024–Jun 2025.
51	Marine Electric Systems Inc. Top agencies DLA (Defense Logistics Agency)	$257,373	0.4%	Rank history: not on the FY2021–FY2025 lists; up 152 since Jul 2024–Jun 2025.
52	Siemens Industry Inc. Top agencies USAF (Department of the Air Force) USDA (Department of Agriculture)	$252,483	0.4%	Rank history: not on the FY2021–FY2023 lists, #6 in FY2024 and #51 in FY2025; down 17 since Jul 2024–Jun 2025.
53	Burhani Enterprises Inc. Top agencies DLA (Defense Logistics Agency)	$244,501	0.4%	Rank history: not on the FY2021–FY2023 lists, #81 in FY2024 and not on the FY2025 list; up 23 since Jul 2024–Jun 2025.
54	Perma-Cal Industries, Inc. Top agencies DLA (Defense Logistics Agency)	$232,546	0.4%	Rank history: #53 in FY2021, #43 in FY2022, #52 in FY2023, #59 in FY2024 and #32 in FY2025; down 16 since Jul 2024–Jun 2025.
55	Advanced Power Control Inc. Top agencies DOJ (Department of Justice)	$229,609	0.4%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; up 7 since Jul 2024–Jun 2025.
56	Trillamed LLC Top agencies VA (Department of Veterans Affairs)	$226,985	0.4%	Rank history: #22 in FY2021, not on the FY2022–FY2024 lists and #48 in FY2025; up 204 since Jul 2024–Jun 2025.
57	Advanced Products Services Inc. Top agencies DLA (Defense Logistics Agency)	$225,222	0.4%	Rank history: #84 in FY2021, #88 in FY2022, not on the FY2023 list, #44 in FY2024 and not on the FY2025 list; up 9 since Jul 2024–Jun 2025.
58	Jag Components, LLC Top agencies DLA (Defense Logistics Agency)	$209,650	0.4%	Rank history: not on the FY2021 list, #94 in FY2022, not on the FY2023 list, #54 in FY2024 and not on the FY2025 list; down 4 since Jul 2024–Jun 2025.
59	DSI M&E Limited Top agencies USAF (Department of the Air Force)	$200,552	0.3%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; new, not ranked in Jul 2024–Jun 2025.
60	R O B E R T B O S C H S T I F T U N G Gesellschaft MIT Beschrankter Haftung Through Electro-Voice Dynacord LLC Top agencies HHS (Department of Health and Human Services)	$199,985	0.3%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; new, not ranked in Jul 2024–Jun 2025.
61	Integrated Procurement Technologies Top agencies DLA (Defense Logistics Agency)	$182,046	0.3%	Rank history: not on the FY2021–FY2025 lists; up 73 since Jul 2024–Jun 2025.
62	Govparts LLC Top agencies DLA (Defense Logistics Agency)	$176,750	0.3%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; new, not ranked in Jul 2024–Jun 2025.
63	Leach International Corp Through King Nutronics Corporation Top agencies DLA (Defense Logistics Agency)	$171,908	0.3%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; up 38 since Jul 2024–Jun 2025.
64	AGM Container Controls Inc. Top agencies DLA (Defense Logistics Agency)	$170,686	0.3%	Rank history: #41 in FY2021, #36 in FY2022, #38 in FY2023, #35 in FY2024 and #62 in FY2025; down 17 since Jul 2024–Jun 2025.
65	Kijero, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$169,480	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
66	Janels Industries Inc. Top agencies DLA (Defense Logistics Agency)	$169,093	0.3%	Rank history: #59 in FY2021, #68 in FY2022, #36 in FY2023, #40 in FY2024 and #72 in FY2025; up 4 since Jul 2024–Jun 2025.
67	Concentric Security LLC Top agencies DHS (Department of Homeland Security)	$153,589	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
68	Detroit Switch Inc. Top agencies DLA (Defense Logistics Agency)	$149,590	0.3%	Rank history: #58 in FY2021, #42 in FY2022, #47 in FY2023, #51 in FY2024 and #54 in FY2025; down 24 since Jul 2024–Jun 2025.
69	Legacy Product Support Llc. Top agencies DLA (Defense Logistics Agency)	$144,830	0.2%	Rank history: not on the FY2021–FY2024 lists and #69 in FY2025; up 94 since Jul 2024–Jun 2025.
70	Daughtridge Sales Company, Inc. Top agencies DLA (Defense Logistics Agency)	$140,758	0.2%	Rank history: #57 in FY2021, #70 in FY2022, #64 in FY2023, #84 in FY2024 and #84 in FY2025; up 18 since Jul 2024–Jun 2025.
71	Johnson Controls Inc 2 awardees, including Johnson Controls Fire Protection LP Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$139,914	0.2%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; down 53 since Jul 2024–Jun 2025.
72	APL Access & Security, Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$139,453	0.2%	Rank history: #11 in FY2021, not on the FY2022–FY2023 lists, #52 in FY2024 and #70 in FY2025; down 29 since Jul 2024–Jun 2025.
73	Opsens Solutions Inc. Top agencies Navy (Department of the Navy)	$134,810	0.2%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; down 1 since Jul 2024–Jun 2025.
74	Melton Sales & Service Top agencies DLA (Defense Logistics Agency)	$126,559	0.2%	Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; down 41 since Jul 2024–Jun 2025.
75	Marinette Marine Corporation Through Fincantieri Marine Systems North America, Inc. Top agencies DLA (Defense Logistics Agency)	$125,426	0.2%	Rank history: not on the FY2021–FY2025 lists; up 40 since Jul 2024–Jun 2025.
76	Mesa Laboratories Inc. Top agencies HHS (Department of Health and Human Services)	$125,068	0.2%	Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; new, not ranked in Jul 2024–Jun 2025.
77	Cold LLC Top agencies DLA (Defense Logistics Agency)	$124,020	0.2%	Rank history: not on the FY2021–FY2025 lists; up 152 since Jul 2024–Jun 2025.
78	Westsim Engineering, Inc. Top agencies DLA (Defense Logistics Agency)	$120,624	0.2%	Rank history: #52 in FY2021, #41 in FY2022, #53 in FY2023, #90 in FY2024 and #50 in FY2025; down 18 since Jul 2024–Jun 2025.
79	Sogen Company, Inc. Top agencies DLA (Defense Logistics Agency)	$118,580	0.2%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; up 19 since Jul 2024–Jun 2025.
80	Phaostron Instrument and Electronic Company Top agencies DLA (Defense Logistics Agency)	$116,293	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
81	ATS Automation, Inc. Through ATS Inland NW LLC Top agencies USAF (Department of the Air Force)	$113,640	0.2%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; new, not ranked in Jul 2024–Jun 2025.
82	Heico Aerospace Corporat Through Seal Dynamics LLC Top agencies DLA (Defense Logistics Agency)	$102,838	0.2%	Rank history: #76 in FY2021, #32 in FY2022, not on the FY2023 list, #85 in FY2024 and not on the FY2025 list; up 26 since Jul 2024–Jun 2025.
83	Spaires Inc Top agencies DLA (Defense Logistics Agency)	$101,203	0.2%	Rank history: not on the FY2021–FY2025 lists; up 116 since Jul 2024–Jun 2025.
84	Northrop Grumman Corporation Through Northrop Grumman Systems Corporation Top agencies DLA (Defense Logistics Agency)	$91,028	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
85	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency)	$90,918	0.2%	Rank history: #82 in FY2021, #90 in FY2022, #80 in FY2023, #83 in FY2024 and not on the FY2025 list; up 11 since Jul 2024–Jun 2025.
86	Dynalec Corporation Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$87,762	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
87	Standard Calibrations Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$87,080	0.1%	Rank history: #64 in FY2021, not on the FY2022 list, #60 in FY2023, #80 in FY2024 and not on the FY2025 list; up 22 since Jul 2024–Jun 2025.
88	Chand, L.L.C. Top agencies DLA (Defense Logistics Agency)	$85,822	0.1%	Rank history: not on the FY2021–FY2024 lists and #81 in FY2025; up 38 since Jul 2024–Jun 2025.
89	RBC Aircraft Products Inc Through Sargent Aerospace & Defense, LLC Top agencies DLA (Defense Logistics Agency)	$85,725	0.1%	Rank history: not on the FY2021–FY2024 lists and #24 in FY2025; down 64 since Jul 2024–Jun 2025.
90	RDP Corporation Top agencies Navy (Department of the Navy)	$84,520	0.1%	Rank history: not on the FY2021–FY2024 lists and #100 in FY2025; new, not ranked in Jul 2024–Jun 2025.
91	Packaged Air-Conditioning Service Corp Top agencies USAF (Department of the Air Force)	$84,100	0.1%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; down 23 since Jul 2024–Jun 2025.
92	Tibbetts Electrical Services Inc. Top agencies VA (Department of Veterans Affairs)	$83,311	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
93	T-1 Sales & Engineering Corp Top agencies DLA (Defense Logistics Agency)	$80,846	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
94	Esco Technologies Inc. Through Vacco Industries Top agencies DLA (Defense Logistics Agency)	$78,930	0.1%	Rank history: #66 in FY2021, not on the FY2022 list, #61 in FY2023, #37 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
95	AMS 21St Century Logistics, LLC Top agencies DLA (Defense Logistics Agency)	$78,221	0.1%	Rank history: not on the FY2021–FY2025 lists; up 144 since Jul 2024–Jun 2025.
96	MCO Solutions, Inc. Top agencies DLA (Defense Logistics Agency)	$74,955	0.1%	Rank history: not on the FY2021–FY2024 lists and #98 in FY2025; up 132 since Jul 2024–Jun 2025.
97	Veit, Inc. Top agencies Army (Department of the Army)	$74,950	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
98	Digital Assets LLC Top agencies DHS (Department of Homeland Security)	$74,750	0.1%	Rank history: not on the FY2021–FY2025 lists; up 8 since Jul 2024–Jun 2025.
99	Infotec Systems Corp Top agencies Navy (Department of the Navy)	$67,984	0.1%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2023 and not on the FY2024–FY2025 lists; up 173 since Jul 2024–Jun 2025.
100	S3 Aerodefense LLC Top agencies DLA (Defense Logistics Agency)	$67,762	0.1%	Rank history: not on the FY2021–FY2024 lists and #33 in FY2025; down 58 since Jul 2024–Jun 2025.

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100 of 372 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 $58.6 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 NAICS 334512 contractors in Jul 2025–Jun 2026?

1. The Prospective Group, LLC ($5.45M), 2. Signet Technologies, Inc. ($4.37M), 3. Laurus Systems Inc. ($2.4M), 4. System High Corporation ($2.14M), 5. Transaero, Inc. ($2.08M), 6. Alabama Controls, Inc. ($1.74M), 7. MMC Metrology Lab, Inc. ($1.51M), 8. Four Winds Mechanical HTC / AC Inc. ($1.48M), 9. Daikin Applied Americas Inc ($1.34M), 10. Kampi Components Co Inc. ($1.33M).

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