Top 100 Contractors in NAICS 334512: Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use, FY2024

Name: Top 100 Contractors in NAICS 334512: Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 41% of FY2024 NAICS 334512 contract dollars

Contract obligations: $52,418,640 Net of deobligations, by contracts coded NAICS 334512
Contractors: 401 Parent companies with an obligation
Largest contractor: Signet Technologies, Inc. $7.98 million, 14.4% 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	Signet Technologies, Inc. 2 awardees Top agencies AOUSC (Administrative Office of the U.S. Courts) DOJ (Department of Justice) SEC (Securities and Exchange Commission)	$7,977,840	14.4%	Rank history: #2 in FY2021, #1 in FY2022, #1 in FY2023 and #2 in FY2025; unchanged since FY2023.
2	The Prospective Group, LLC Top agencies DOS (Department of State)	$3,911,418	7.0%	Rank history: not on the FY2021 list, #45 in FY2022, #4 in FY2023 and #1 in FY2025; up 2 since FY2023.
3	System High Corporation Top agencies OSD (Office of the Secretary of Defense) MDA (DOD Missile Defense Agency) USAF (Department of the Air Force)	$2,436,681	4.4%	Rank history: #1 in FY2021, #6 in FY2022, #5 in FY2023 and #5 in FY2025; up 2 since FY2023.
4	Cam-Dex Corporation Top agencies Smithsonian (Smithsonian Institution) Treasury (Department of the Treasury) HHS (Department of Health and Human Services)	$1,555,475	2.8%	Rank history: #5 in FY2021, #9 in FY2022, #9 in FY2023 and #13 in FY2025; up 5 since FY2023.
5	Weathertrol Maintenance Corp Top agencies VA (Department of Veterans Affairs)	$1,353,999	2.4%	Rank history: not on the FY2021–FY2022 lists, #12 in FY2023 and not on the FY2025 list; up 7 since FY2023.
6	Siemens Industry Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) USDA (Department of Agriculture)	$1,310,307	2.4%	Rank history: not on the FY2021–FY2023 lists and #51 in FY2025; new.
7	Dorsun Global, LLC Top agencies USAF (Department of the Air Force)	$1,256,149	2.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
8	Kieback & Peter GMBH & Co. KG Top agencies USAF (Department of the Air Force)	$1,066,725	1.9%	Rank history: not on the FY2021–FY2023 lists and #28 in FY2025; new.
9	Daikin Applied Americas Inc Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) USDA (Department of Agriculture)	$1,048,239	1.9%	Rank history: #35 in FY2021, #5 in FY2022, #14 in FY2023 and #3 in FY2025; up 5 since FY2023.
10	Laurus Systems Inc. Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) Navy (Department of the Navy)	$1,047,860	1.9%	Rank history: #26 in FY2021, #31 in FY2022, #34 in FY2023 and #4 in FY2025; up 24 since FY2023.
11	Kulite Semiconductor Products Inc. Top agencies DLA (Defense Logistics Agency)	$986,299	1.8%	Rank history: #20 in FY2021, #33 in FY2022, #24 in FY2023 and #55 in FY2025; up 13 since FY2023.
12	S I T Corporation Top agencies DLA (Defense Logistics Agency)	$935,435	1.7%	Rank history: #71 in FY2021, not on the FY2022–FY2023 lists and #42 in FY2025; up 106 since FY2023.
13	Utility Systems Solutions, Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice)	$932,938	1.7%	Rank history: #6 in FY2021, #18 in FY2022, #8 in FY2023 and #9 in FY2025; down 5 since FY2023.
14	FBC Enterprises LLC Top agencies DLA (Defense Logistics Agency)	$913,317	1.6%	Rank history: not on the FY2021–FY2022 lists, #95 in FY2023 and #10 in FY2025; up 81 since FY2023.
15	Alabama Controls, Inc. Top agencies USAF (Department of the Air Force) DOS (Department of State)	$819,080	1.5%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2025; new.
16	RJY Group LLC Top agencies VA (Department of Veterans Affairs)	$681,711	1.2%	Rank history: not on the FY2021 list, #24 in FY2022, #31 in FY2023 and #34 in FY2025; up 15 since FY2023.
17	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency)	$616,529	1.1%	Rank history: #42 in FY2021, #86 in FY2022, #56 in FY2023 and #16 in FY2025; up 39 since FY2023.
18	Black Bay Aerospace LLC Top agencies DLA (Defense Logistics Agency)	$536,138	1.0%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 162 since FY2023.
19	Ldia Holdings, LLC Top agencies USAF (Department of the Air Force)	$534,616	1.0%	Rank history: #17 in FY2021, #4 in FY2022, #25 in FY2023 and #23 in FY2025; up 6 since FY2023.
20	Aldevra LLC Top agencies VA (Department of Veterans Affairs)	$502,948	0.9%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
21	Electrofilm Manufacturing Company LLC Through ITT Aerospace Controls LLC Top agencies DLA (Defense Logistics Agency)	$498,641	0.9%	Rank history: not on the FY2021 list, #55 in FY2022, not on the FY2023 list and not on the FY2025 list; up 100 since FY2023.
22	Argo Turboserve Corporation 2 awardees Top agencies DLA (Defense Logistics Agency)	$495,708	0.9%	Rank history: #7 in FY2021, #12 in FY2022, #17 in FY2023 and #14 in FY2025; down 5 since FY2023.
23	MMC Metrology Lab, Inc. Top agencies DLA (Defense Logistics Agency)	$494,415	0.9%	Rank history: #15 in FY2021, #27 in FY2022, #22 in FY2023 and #12 in FY2025; down 1 since FY2023.
24	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency)	$492,780	0.9%	Rank history: #10 in FY2021, #17 in FY2022, #26 in FY2023 and #11 in FY2025; up 2 since FY2023.
25	United Rentals, Inc. Top agencies USAF (Department of the Air Force)	$488,573	0.9%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
26	Energy Systems Group, LLC Top agencies GSA (General Services Administration)	$474,036	0.9%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2025; new.
27	Honeywell International Inc. Through Honeywell Building Solutions GMBH Top agencies Army (Department of the Army)	$471,030	0.8%	Rank history: #67 in FY2021, #60 in FY2022, not on the FY2023 list and #21 in FY2025; returned.
28	Albertus Energy, Inc. Top agencies Army (Department of the Army)	$424,552	0.8%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
29	Jamaica Bearings Co., Inc. Top agencies DLA (Defense Logistics Agency)	$420,064	0.8%	Rank history: #12 in FY2021, #21 in FY2022, #19 in FY2023 and #6 in FY2025; down 10 since FY2023.
30	Stanley Black & Decker, Inc. Through Securitas Technology Corporation Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs) DOI (Department of the Interior)	$402,542	0.7%	Rank history: #37 in FY2021, #30 in FY2022, #96 in FY2023 and not on the FY2025 list; up 66 since FY2023.
31	Thermocontrol Inc. Top agencies DLA (Defense Logistics Agency)	$392,004	0.7%	Rank history: not on the FY2021–FY2023 lists and #97 in FY2025; new.
32	Vicon Industries, Inc. Top agencies USAF (Department of the Air Force)	$389,620	0.7%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
33	Johnson Controls Security Solutions LLC 3 awardees, including Johnson Controls Inc., Johnson Controls Navy Systems, LLC and Johnson Controls Government Systems, LLC Top agencies DHA (Defense Health Agency) DLA (Defense Logistics Agency) DOJ (Department of Justice)	$385,068	0.7%	Rank history: #9 in FY2021, #2 in FY2022, #23 in FY2023 and #31 in FY2025; down 10 since FY2023.
34	ABM Facility Support Services, LLC Top agencies DOE (Department of Energy)	$373,684	0.7%	Rank history: not on the FY2021–FY2023 lists and #20 in FY2025; new.
35	AGM Container Controls Inc. Top agencies DLA (Defense Logistics Agency)	$371,694	0.7%	Rank history: #41 in FY2021, #36 in FY2022, #38 in FY2023 and #62 in FY2025; up 3 since FY2023.
36	R & M Government Services Inc. Top agencies DLA (Defense Logistics Agency)	$368,344	0.7%	Rank history: #56 in FY2021, #98 in FY2022, not on the FY2023 list and #92 in FY2025; returned.
37	Esco Technologies Inc. Through Vacco Industries Top agencies DLA (Defense Logistics Agency)	$363,148	0.7%	Rank history: #66 in FY2021, not on the FY2022 list, #61 in FY2023 and not on the FY2025 list; up 24 since FY2023.
38	Moog Inc. Top agencies Army (Department of the Army)	$336,586	0.6%	Rank history: not on the FY2021 list, #8 in FY2022, #21 in FY2023 and #19 in FY2025; down 17 since FY2023.
39	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency)	$331,869	0.6%	Rank history: not on the FY2021 list, #16 in FY2022, #32 in FY2023 and #45 in FY2025; down 7 since FY2023.
40	Janels Industries Inc. Top agencies DLA (Defense Logistics Agency)	$323,302	0.6%	Rank history: #59 in FY2021, #68 in FY2022, #36 in FY2023 and #72 in FY2025; down 4 since FY2023.
41	Windward Enterprises, LLC Top agencies DLA (Defense Logistics Agency)	$303,303	0.5%	Rank history: #13 in FY2021, #26 in FY2022, #11 in FY2023 and #59 in FY2025; down 30 since FY2023.
42	Peerless Electronics Inc. Top agencies DLA (Defense Logistics Agency)	$302,044	0.5%	Rank history: #32 in FY2021, #20 in FY2022, #13 in FY2023 and #40 in FY2025; down 29 since FY2023.
43	Stealth Supply Inc 2 awardees Top agencies DLA (Defense Logistics Agency)	$298,425	0.5%	Rank history: #49 in FY2021, not on the FY2022 list, #49 in FY2023 and not on the FY2025 list; up 6 since FY2023.
44	Advanced Products Services Inc. Top agencies DLA (Defense Logistics Agency)	$292,686	0.5%	Rank history: #84 in FY2021, #88 in FY2022, not on the FY2023 list and not on the FY2025 list; up 135 since FY2023.
45	Eckelmann AG Top agencies DECA (Defense Commissary Agency)	$292,565	0.5%	Rank history: not on the FY2021–FY2023 lists and #43 in FY2025; new.
46	GMS International Corporation Top agencies DLA (Defense Logistics Agency)	$284,171	0.5%	Rank history: not on the FY2021 list, #66 in FY2022, #84 in FY2023 and #61 in FY2025; up 38 since FY2023.
47	ECI Defense Group, Inc. Top agencies DLA (Defense Logistics Agency)	$280,553	0.5%	Rank history: #80 in FY2021, #82 in FY2022, #27 in FY2023 and #46 in FY2025; down 20 since FY2023.
48	Tools Electric LLC Top agencies DOI (Department of the Interior)	$278,641	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
49	Transaero, Inc. Top agencies DLA (Defense Logistics Agency)	$262,471	0.5%	Rank history: #33 in FY2021, #25 in FY2022, #29 in FY2023 and #15 in FY2025; down 20 since FY2023.
50	LKD Aerospace, LLC Top agencies DLA (Defense Logistics Agency)	$258,126	0.5%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2025; new.
51	Detroit Switch Inc. Top agencies DLA (Defense Logistics Agency)	$251,100	0.5%	Rank history: #58 in FY2021, #42 in FY2022, #47 in FY2023 and #54 in FY2025; down 4 since FY2023.
52	APL Access & Security, Inc. Top agencies DHS (Department of Homeland Security)	$244,920	0.4%	Rank history: #11 in FY2021, not on the FY2022–FY2023 lists and #70 in FY2025; up 174 since FY2023.
53	Security & Energy Technologies Corporation Top agencies Army (Department of the Army) DOJ (Department of Justice) DHS (Department of Homeland Security)	$239,545	0.4%	Rank history: #16 in FY2021, #38 in FY2022, #33 in FY2023 and #37 in FY2025; down 20 since FY2023.
54	Jag Components, LLC Top agencies DLA (Defense Logistics Agency)	$228,517	0.4%	Rank history: not on the FY2021 list, #94 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
55	Rev-Cap Company, Inc. Top agencies DLA (Defense Logistics Agency)	$225,257	0.4%	Rank history: not on the FY2021 list, #80 in FY2022, not on the FY2023 list and #41 in FY2025; up 250 since FY2023.
56	Krismark Group, Inc. Through LKD Aerospace, LLC Top agencies DLA (Defense Logistics Agency)	$213,900	0.4%	Rank history: #27 in FY2021, #13 in FY2022, #76 in FY2023 and not on the FY2025 list; up 20 since FY2023.
57	Moeller Instrument Company, Inc. Top agencies DLA (Defense Logistics Agency)	$207,104	0.4%	Rank history: #31 in FY2021, #48 in FY2022, #57 in FY2023 and #52 in FY2025; unchanged since FY2023.
58	TNL Sales LLC Top agencies DLA (Defense Logistics Agency)	$202,757	0.4%	Rank history: not on the FY2021 list, #84 in FY2022, not on the FY2023 list and not on the FY2025 list; up 58 since FY2023.
59	Perma-Cal Industries, Inc. Top agencies DLA (Defense Logistics Agency)	$199,920	0.4%	Rank history: #53 in FY2021, #43 in FY2022, #52 in FY2023 and #32 in FY2025; down 7 since FY2023.
60	Rolls-Royce Military Aero Engines Ltd Through Rolls-Royce Solutions America Inc. Top agencies DLA (Defense Logistics Agency)	$199,250	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
61	CU Enterprises Ltd Through C U Enterprises Ltd Top agencies DLA (Defense Logistics Agency)	$198,306	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 238 since FY2023.
62	Carrier Rental Systems Inc Through Carrier Corporation Top agencies Navy (Department of the Navy)	$189,164	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 151 since FY2023.
63	Par Defense Industries, LLC Top agencies DLA (Defense Logistics Agency)	$185,998	0.3%	Rank history: not on the FY2021–FY2023 lists and #47 in FY2025; new.
64	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$185,329	0.3%	Rank history: not on the FY2021 list, #91 in FY2022, #58 in FY2023 and #83 in FY2025; down 6 since FY2023.
65	Ems Technologies, LLC Top agencies DOJ (Department of Justice)	$177,932	0.3%	Rank history: not on the FY2021–FY2023 lists and #65 in FY2025; up 60 since FY2023.
66	Edwards International LLC Top agencies DLA (Defense Logistics Agency)	$171,011	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
67	The Veracity Group Inc. Top agencies VA (Department of Veterans Affairs)	$168,626	0.3%	Rank history: not on the FY2021–FY2022 lists, #43 in FY2023 and not on the FY2025 list; down 24 since FY2023.
68	Micro Grow Greenhouse Systems Inc. Top agencies USDA (Department of Agriculture)	$167,766	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 132 since FY2023.
69	The Boeing Company 2 awardees, including Boeing Distribution, Inc. and Boeing Distribution Services X, Inc. Top agencies DLA (Defense Logistics Agency)	$167,162	0.3%	Rank history: not on the FY2021 list, #67 in FY2022, not on the FY2023 list and not on the FY2025 list; up 90 since FY2023.
70	Avair, LLC Top agencies DLA (Defense Logistics Agency)	$158,400	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
71	RTX Corporation Through Hamilton Sundstrand Corporation Top agencies Navy (Department of the Navy)	$152,864	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
72	Transdigm Group Incorporated 2 awardees, including Harcosemco LLC and Semco Instruments Inc. Top agencies DLA (Defense Logistics Agency)	$150,103	0.3%	Rank history: #25 in FY2021, #49 in FY2022, #18 in FY2023 and not on the FY2025 list; down 54 since FY2023.
73	Monaco Enterprises, Inc. Top agencies USAF (Department of the Air Force)	$149,612	0.3%	Rank history: #34 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
74	Samyak Solutions, Inc. Top agencies USDA (Department of Agriculture)	$145,327	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
75	V. Lopez JR. & Sons General Engineering Contractors, Inc. Top agencies DLA (Defense Logistics Agency)	$141,727	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
76	Veyka Insaat Mimarlik Muhendislik Sanayi IC VE Dis Ticaret Anonim Sirketi Top agencies DOS (Department of State)	$137,057	0.2%	Rank history: #4 in FY2021, #53 in FY2022, not on the FY2023 list and not on the FY2025 list; up 35 since FY2023.
77	Westbase Inc Through Phaostron Instrument and Electronic Company Top agencies DLA (Defense Logistics Agency)	$135,084	0.2%	Rank history: #85 in FY2021, #71 in FY2022, #94 in FY2023 and not on the FY2025 list; up 17 since FY2023.
78	General Dynamics Land Systems - Canada Corporation Top agencies DLA (Defense Logistics Agency)	$132,912	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
79	Treadwell Corporation (Delaware) Top agencies DLA (Defense Logistics Agency)	$130,447	0.2%	Rank history: not on the FY2021 list, #57 in FY2022, #78 in FY2023 and #82 in FY2025; down 1 since FY2023.
80	Standard Calibrations Inc. Top agencies DLA (Defense Logistics Agency)	$128,674	0.2%	Rank history: #64 in FY2021, not on the FY2022 list, #60 in FY2023 and not on the FY2025 list; down 20 since FY2023.
81	Burhani Enterprises Inc. Top agencies DLA (Defense Logistics Agency)	$125,231	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 68 since FY2023.
82	Martin Military Inc. Top agencies DLA (Defense Logistics Agency)	$118,100	0.2%	Rank history: #23 in FY2021, #29 in FY2022, not on the FY2023 list and #67 in FY2025; up 30 since FY2023.
83	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency)	$116,623	0.2%	Rank history: #82 in FY2021, #90 in FY2022, #80 in FY2023 and not on the FY2025 list; down 3 since FY2023.
84	Daughtridge Sales Company, Inc. Top agencies DLA (Defense Logistics Agency)	$114,694	0.2%	Rank history: #57 in FY2021, #70 in FY2022, #64 in FY2023 and #84 in FY2025; down 20 since FY2023.
85	Heico Aerospace Corporat Through Seal Dynamics LLC Top agencies DLA (Defense Logistics Agency)	$113,125	0.2%	Rank history: #76 in FY2021, #32 in FY2022, not on the FY2023 list and not on the FY2025 list; up 86 since FY2023.
86	VSE Corporation Top agencies DLA (Defense Logistics Agency)	$113,108	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 23 since FY2023.
87	Tel-Tru Inc. Top agencies DLA (Defense Logistics Agency)	$112,908	0.2%	Rank history: not on the FY2021 list, #92 in FY2022, not on the FY2023 list and not on the FY2025 list; up 43 since FY2023.
88	RIX Industries Top agencies DLA (Defense Logistics Agency)	$111,838	0.2%	Rank history: not on the FY2021–FY2022 lists, #65 in FY2023 and not on the FY2025 list; down 23 since FY2023.
89	Norcatec LLC Top agencies DLA (Defense Logistics Agency)	$110,862	0.2%	Rank history: not on the FY2021–FY2022 lists, #35 in FY2023 and not on the FY2025 list; down 54 since FY2023.
90	Westsim Engineering, Inc. Top agencies DLA (Defense Logistics Agency)	$104,790	0.2%	Rank history: #52 in FY2021, #41 in FY2022, #53 in FY2023 and #50 in FY2025; down 37 since FY2023.
91	Itrade Inc. Top agencies Army (Department of the Army)	$100,000	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
92	Control Products Corporation Top agencies DLA (Defense Logistics Agency)	$96,325	0.2%	Rank history: not on the FY2021 list, #52 in FY2022, #88 in FY2023 and #88 in FY2025; down 4 since FY2023.
93	Aviarms Support Corp Top agencies DLA (Defense Logistics Agency)	$91,654	0.2%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2023 and not on the FY2025 list; down 16 since FY2023.
94	Kaizen Controls and Automation LLC Top agencies USAF (Department of the Air Force)	$88,135	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
95	Building Automation Services, Inc. Top agencies DOJ (Department of Justice)	$83,000	0.1%	Rank history: #73 in FY2021, #77 in FY2022, #92 in FY2023 and not on the FY2025 list; down 3 since FY2023.
96	Kessler Thermometer Corp Top agencies DLA (Defense Logistics Agency)	$80,735	0.1%	Rank history: not on the FY2021–FY2023 lists and #68 in FY2025; up 68 since FY2023.
97	Amentum Services, Inc. Top agencies DLA (Defense Logistics Agency)	$80,061	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
98	Williams Mechanical LLC Top agencies VA (Department of Veterans Affairs)	$79,561	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
99	S3 International LLC Through S3 Aerodefense LLC Top agencies DLA (Defense Logistics Agency)	$77,374	0.1%	Rank history: not on the FY2021 list, #50 in FY2022, not on the FY2023 list and not on the FY2025 list; up 84 since FY2023.
100	SZY Holdings, LLC Top agencies DLA (Defense Logistics Agency)	$74,075	0.1%	Rank history: #98 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 23 since FY2023.

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100 of 401 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 $55.5 million obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2024 ran Oct 1, 2023 – Sep 30, 2024. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2023. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2023 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 NAICS 334512 contractors in FY2024?

1. Signet Technologies, Inc. ($7.98M), 2. The Prospective Group, LLC ($3.91M), 3. System High Corporation ($2.44M), 4. Cam-Dex Corporation ($1.56M), 5. Weathertrol Maintenance Corp ($1.35M), 6. Siemens Industry Inc. ($1.31M), 7. Dorsun Global, LLC ($1.26M), 8. Kieback & Peter GMBH & Co. KG ($1.07M), 9. Daikin Applied Americas Inc ($1.05M), 10. Laurus Systems Inc. ($1.05M).

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