Top 100 Contractors in NAICS 33531: Electrical Equipment Manufacturing, FY2021

Name: Top 100 Contractors in NAICS 33531: Electrical Equipment Manufacturing, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 40% of FY2021 NAICS 33531 contract dollars

Contract obligations: $645,136,307 Net of deobligations, by contracts coded NAICS 33531 or a code under it
Contractors: 1,555 Parent companies with an obligation
Largest contractor: Cummins Inc. $102 million, 15.1% 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	Cummins Inc. 13 awardees, including Cummins Power Generation Inc. and Cummins Crosspoint LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) DOS (Department of State)	$101,643,489	15.1%	Rank history: #2 in FY2022, #2 in FY2023, #14 in FY2024 and #84 in FY2025; unchanged since FY2020.
2	PD Power Systems, LLC Top agencies Army (Department of the Army)	$42,667,958	6.3%	Rank history: #12 in FY2022, #14 in FY2023, #4 in FY2024 and #5 in FY2025; new, not ranked in FY2020.
3	Tepco Energy Partner Incorporated Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$35,515,191	5.3%	Rank history: #1 in FY2022, #3 in FY2023, #2 in FY2024 and #1 in FY2025; new, not ranked in FY2020.
4	Kohler Co. 2 awardees Top agencies DOT (Department of Transportation) Commerce (Department of Commerce) DOI (Department of the Interior)	$16,358,306	2.4%	Rank history: #3 in FY2022, #10 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2020.
5	RCT Systems, Inc. Top agencies Navy (Department of the Navy)	$16,160,511	2.4%	Rank history: not on the FY2022–FY2023 lists, #19 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
6	L3Harris Technologies, Inc. 17 awardees, including L3 Technologies, Inc., L3Harris Maritime Power & Energy Solutions, Inc. and Emcore Space & Navigation LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$11,943,163	1.8%	Rank history: #34 in FY2022, #23 in FY2023, #5 in FY2024 and #7 in FY2025; up 5 since FY2020.
7	Andritz AG 3 awardees, including Andritz Hydro Corp, Graebener Press Systems, Inc. and Andritz Schuler Incorporated Top agencies Army (Department of the Army) Treasury (Department of the Treasury)	$11,646,864	1.7%	Rank history: #66 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
8	Siemens Aktiengesellschaft 2 awardees, including Siemens Industry Inc. and Siemens Government Technologies Inc. Top agencies USAF (Department of the Air Force) DOS (Department of State) VA (Department of Veterans Affairs)	$11,614,165	1.7%	Rank history: #26 in FY2022, #12 in FY2023, #22 in FY2024 and not on the FY2025 list; up 7 since FY2020.
9	ECI Defense Group, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$11,608,729	1.7%	Rank history: #17 in FY2022, #11 in FY2023, #18 in FY2024 and #15 in FY2025; up 13 since FY2020.
10	Schneider Electric Buildings Americas Inc. 4 awardees, including Schneider Electric Usa, Inc. and Asco Power Services Inc. Top agencies DOT (Department of Transportation) DOJ (Department of Justice) VA (Department of Veterans Affairs)	$10,853,246	1.6%	Rank history: #57 in FY2022 and not on the FY2023–FY2025 lists; up 10 since FY2020.
11	The Chugoku Electric Power Company, Incorporated Top agencies Navy (Department of the Navy)	$10,577,160	1.6%	Rank history: #4 in FY2022, #5 in FY2023, #8 in FY2024 and #6 in FY2025; new, not ranked in FY2020.
12	C&C Power Solutions, LLC Top agencies Navy (Department of the Navy)	$9,487,165	1.4%	Rank history: not on the FY2022–FY2025 lists; down 7 since FY2020.
13	Leonardo S.p.A. 10 awardees, including DRS Naval Power Systems Inc., DRS Network & Imaging Systems LLC and DRS Systems, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DLA (Defense Logistics Agency)	$8,760,512	1.3%	Rank history: #11 in FY2022, #64 in FY2023, #20 in FY2024 and #8 in FY2025; up 33 since FY2020.
14	Evoqua Water Technologies LLC 3 awardees Top agencies Navy (Department of the Navy)	$8,446,633	1.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
15	Transdigm Group Incorporated 16 awardees, including Skurka Aerospace Inc., Mason Electric Co. and Aerocontrolex Group, Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) Navy (Department of the Navy)	$8,141,460	1.2%	Rank history: #9 in FY2022, #21 in FY2023 and not on the FY2024–FY2025 lists; up 15 since FY2020.
16	Jenoptik AG 2 awardees, including Vincorion Power Systems GMBH and Vincorion LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$7,502,900	1.1%	Rank history: #38 in FY2022 and not on the FY2023–FY2025 lists; up 32 since FY2020.
17	General Electric Company 7 awardees, including GE Energy Power Conversion Naval Systems Inc., GE Energy Power Conversion USA Inc. and GE Aviation Systems LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$7,298,436	1.1%	Rank history: #18 in FY2022, #17 in FY2023, #24 in FY2024 and #19 in FY2025; down 15 since FY2020.
18	Tohoku Electric Power Company Incorporated Top agencies USAF (Department of the Air Force)	$6,888,906	1.0%	Rank history: #6 in FY2022, #6 in FY2023, #13 in FY2024 and #16 in FY2025; new, not ranked in FY2020.
19	Jo-Kell Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$6,093,691	0.9%	Rank history: #7 in FY2022, #15 in FY2023, #11 in FY2024 and #2 in FY2025; down 11 since FY2020.
20	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$5,795,279	0.9%	Rank history: #28 in FY2022, #24 in FY2023, #21 in FY2024 and #11 in FY2025; up 20 since FY2020.
21	Inglett & Stubbs International LLC Top agencies DHS (Department of Homeland Security)	$5,703,685	0.8%	Rank history: not on the FY2022 list, #76 in FY2023 and not on the FY2024–FY2025 lists; down 18 since FY2020.
22	G & RK Consulting Associates LLC Top agencies DOE (Department of Energy)	$5,106,675	0.8%	Rank history: #24 in FY2022, #40 in FY2023, #71 in FY2024 and #26 in FY2025; up 17 since FY2020.
23	Argo Systems, LLC Top agencies Navy (Department of the Navy)	$4,927,412	0.7%	Rank history: not on the FY2022–FY2025 lists; down 13 since FY2020.
24	Toshiba Corporation 2 awardees, including Toshiba America Energy Systems Corporation Top agencies DOI (Department of the Interior)	$4,543,517	0.7%	Rank history: not on the FY2022–FY2025 lists; up 13 since FY2020.
25	Interdyne Corp Top agencies Army (Department of the Army)	$4,421,662	0.7%	Rank history: not on the FY2022–FY2025 lists; down 2 since FY2020.
26	Government of Canada Through Canadian Commercial Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy)	$4,419,480	0.7%	Rank history: #40 in FY2022, #46 in FY2023, #41 in FY2024 and not on the FY2025 list; down 8 since FY2020.
27	Koontz Electric Company, Incorporated Top agencies Army (Department of the Army)	$4,207,843	0.6%	Rank history: #73 in FY2022, #54 in FY2023, not on the FY2024 list and #80 in FY2025; down 15 since FY2020.
28	General Dynamics Corporation 11 awardees, including General Dynamics-Ots, Inc., Electric Boat Corporation and General Dynamics Motion Control LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$3,900,279	0.6%	Rank history: #35 in FY2022, #67 in FY2023, #62 in FY2024 and #21 in FY2025; down 7 since FY2020.
29	PD Systems, LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$3,758,633	0.6%	Rank history: not on the FY2022–FY2025 lists; down 22 since FY2020.
30	RTX Corporation 15 awardees, including Raytheon Company, Simmonds Precision Products Inc. and Goodrich Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$3,671,595	0.5%	Rank history: #32 in FY2022, #34 in FY2023 and not on the FY2024–FY2025 lists; down 13 since FY2020.
31	Native Instinct LLC Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$3,608,941	0.5%	Rank history: #49 in FY2022 and not on the FY2023–FY2025 lists; up 30 since FY2020.
32	Lynn / Cornerstone Holdings, LLC Through Gracon LLC Top agencies Army (Department of the Army)	$3,587,409	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
33	Louis Allis LLC Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$3,516,066	0.5%	Rank history: not on the FY2022–FY2025 lists; up 54 since FY2020.
34	Curtiss-Wright Corporation 7 awardees, including Curtiss-Wright Electro-Mechanical Corporation, Peerless Instrument Co., Inc. and Exlar Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$3,366,587	0.5%	Rank history: #10 in FY2022, #4 in FY2023, #59 in FY2024 and not on the FY2025 list; down 7 since FY2020.
35	R. S. Means Company LLC 2 awardees, including Fluke Corp and Setra Systems, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$3,273,939	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
36	Slc-Sac JV LLC Top agencies USAF (Department of the Air Force)	$3,268,394	0.5%	Rank history: not on the FY2022 list, #62 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
37	TE Connectivity Corporation 6 awardees, including Brantner and Associates, Inc. Top agencies DLA (Defense Logistics Agency) NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$3,060,276	0.5%	Rank history: #55 in FY2022 and not on the FY2023–FY2025 lists; up 39 since FY2020.
38	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$2,881,401	0.4%	Rank history: #22 in FY2022, #30 in FY2023, #25 in FY2024 and #14 in FY2025; down 12 since FY2020.
39	Jamaica Bearings Co., Inc. Top agencies DLA (Defense Logistics Agency)	$2,874,034	0.4%	Rank history: #31 in FY2022, #37 in FY2023, #50 in FY2024 and #28 in FY2025; up 45 since FY2020.
40	C E Niehoff & Co Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$2,829,453	0.4%	Rank history: not on the FY2022 list, #68 in FY2023, not on the FY2024 list and #46 in FY2025; up 42 since FY2020.
41	Ricardo Perez S.a. 2 awardees, including Olsson Industrial Electric, Inc. and Multiquip Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$2,728,354	0.4%	Rank history: not on the FY2022–FY2025 lists; down 37 since FY2020.
42	Mohammed Abdulrahman Al-Bahar & Sons Top agencies Army (Department of the Army)	$2,693,262	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
43	Natel Engineering Company, LLC Top agencies Army (Department of the Army)	$2,689,506	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
44	Crane Co 4 awardees, including Crane Electronics, Inc., Eldec Aerospace Corp and Hydro-Aire Aerospace Corp Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$2,662,097	0.4%	Rank history: #37 in FY2022, #35 in FY2023, #81 in FY2024 and not on the FY2025 list; up 20 since FY2020.
45	Transaero, Inc. Top agencies DLA (Defense Logistics Agency)	$2,565,681	0.4%	Rank history: #48 in FY2022, #31 in FY2023, #40 in FY2024 and #25 in FY2025; up 27 since FY2020.
46	Fairbanks Morse LLC 3 awardees, including Ward Leonard CT LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$2,463,925	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
47	Hansome Energy Systems Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$2,441,965	0.4%	Rank history: #90 in FY2022, #33 in FY2023, #12 in FY2024 and #22 in FY2025; up 2 since FY2020.
48	Essex Electro Engineers Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$2,413,225	0.4%	Rank history: #54 in FY2022, #9 in FY2023, #10 in FY2024 and #18 in FY2025; up 37 since FY2020.
49	Gemcap Components Inc. Top agencies DLA (Defense Logistics Agency)	$2,344,086	0.3%	Rank history: #47 in FY2022, #41 in FY2023, #45 in FY2024 and #43 in FY2025; up 9 since FY2020.
50	Aviation Ground Equipment Corp Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$2,267,962	0.3%	Rank history: #53 in FY2022, #7 in FY2023, #6 in FY2024 and not on the FY2025 list; down 37 since FY2020.
51	RCT Holdings Inc. Through RCT Systems, Inc. Top agencies Navy (Department of the Navy)	$2,267,701	0.3%	Rank history: #13 in FY2022, #8 in FY2023 and not on the FY2024–FY2025 lists; down 9 since FY2020.
52	Hunter Defense Technolog Through HDT Expeditionary Systems Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$2,203,219	0.3%	Rank history: not on the FY2022 list, #60 in FY2023, #84 in FY2024 and not on the FY2025 list; up 91 since FY2020.
53	Electrical Corporation of America Inc. Top agencies Army (Department of the Army)	$2,171,198	0.3%	Rank history: not on the FY2022 list, #78 in FY2023, #73 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
54	Ares Energy LP Top agencies Army (Department of the Army) USAGM (US Agency for Global Media) DOJ (Department of Justice)	$2,059,378	0.3%	Rank history: not on the FY2022–FY2025 lists; up 29 since FY2020.
55	Carolina Power Systems of Sumter Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$2,012,474	0.3%	Rank history: #68 in FY2022 and not on the FY2023–FY2025 lists; up 10 since FY2020.
56	S I T Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$1,976,782	0.3%	Rank history: not on the FY2022–FY2023 lists, #66 in FY2024 and #89 in FY2025; up 38 since FY2020.
57	Aarcorp Through AAR Supply Chain, Inc. Top agencies DLA (Defense Logistics Agency)	$1,956,766	0.3%	Rank history: #52 in FY2022 and not on the FY2023–FY2025 lists; down 7 since FY2020.
58	Board of Governers State University System of Florida Through Florida State University Top agencies Navy (Department of the Navy)	$1,929,618	0.3%	Rank history: #27 in FY2022, #82 in FY2023, #27 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
59	AKS Industries Inc. Top agencies NGA (Department of Defense National Geospatial Intelligence Agency) OSD (Office of the Secretary of Defense) VA (Department of Veterans Affairs)	$1,832,864	0.3%	Rank history: not on the FY2022–FY2025 lists; up 296 since FY2020.
60	Hitachi, Ltd. Through Hitachi Energy USA Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$1,779,141	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
61	Moog Inc. 4 awardees Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$1,721,277	0.3%	Rank history: #25 in FY2022, #36 in FY2023, #32 in FY2024 and #24 in FY2025; down 30 since FY2020.
62	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,701,826	0.3%	Rank history: #63 in FY2022, #39 in FY2023, #51 in FY2024 and #66 in FY2025; down 5 since FY2020.
63	Murray Benjamin Electric Company LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,701,197	0.3%	Rank history: #44 in FY2022, #27 in FY2023, #37 in FY2024 and not on the FY2025 list; up 7 since FY2020.
64	BBA Aviation PLC Through Ontic Engineering & Manufacturing, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,649,205	0.2%	Rank history: #14 in FY2022, #48 in FY2023, #61 in FY2024 and not on the FY2025 list; up 319 since FY2020.
65	Ducommun Incorporated Through Ducommun Labarge Technologies, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,564,550	0.2%	Rank history: #51 in FY2022, #20 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2020.
66	Great Plains Communications LLC Through Strantech LLC Top agencies DISA (Defense Information Systems Agency) OPM (Office of Personnel Management)	$1,396,996	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
67	Burke Electric, L.L.C. Top agencies DOI (Department of the Interior)	$1,367,931	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
68	Peerless Electronics Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,362,169	0.2%	Rank history: #74 in FY2022, #42 in FY2023, #48 in FY2024 and #44 in FY2025; up 9 since FY2020.
69	Ultra Electronics Forensic Technology Inc 2 awardees, including Ems Development Corporation and Measurement Systems Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,230,960	0.2%	Rank history: #82 in FY2022, #91 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
70	Eaton Corporation 11 awardees, including Sure Power, Inc. and Eaton Aerospace LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$1,213,266	0.2%	Rank history: #71 in FY2022, #32 in FY2023 and not on the FY2024–FY2025 lists; down 19 since FY2020.
71	Northrop Grumman Corporation 8 awardees, including Northrop Grumman Systems Corporation and Alliant Techsystems Operations LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,206,144	0.2%	Rank history: #21 in FY2022, #25 in FY2023, #17 in FY2024 and #3 in FY2025; up 48 since FY2020.
72	Interconnect Wiring LLP Top agencies DLA (Defense Logistics Agency)	$1,204,273	0.2%	Rank history: not on the FY2022–FY2025 lists; up 26 since FY2020.
73	R & M Government Services Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$1,203,513	0.2%	Rank history: not on the FY2022 list, #93 in FY2023, #80 in FY2024 and not on the FY2025 list; up 16 since FY2020.
74	H R Wallingford Group Ltd Through HR Wallingford Limited Top agencies Army (Department of the Army)	$1,187,040	0.2%	Rank history: not on the FY2022–FY2025 lists; up 153 since FY2020.
75	Dutch Valley Supply Co. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,186,590	0.2%	Rank history: #62 in FY2022, #84 in FY2023, #98 in FY2024 and not on the FY2025 list; up 117 since FY2020.
76	Brighton Cromwell LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$1,172,212	0.2%	Rank history: not on the FY2022–FY2025 lists; up 17 since FY2020.
77	Teledyne Technologies Incorporated 2 awardees, including Teledyne Instruments Inc. Top agencies Navy (Department of the Navy)	$1,124,083	0.2%	Rank history: #16 in FY2022, #26 in FY2023, #23 in FY2024 and not on the FY2025 list; up 139 since FY2020.
78	Wireless Telecom Group, Inc. Through Boonton Electronics Corporation Top agencies Navy (Department of the Navy)	$1,123,508	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
79	Ametek Inc. 5 awardees, including Ametek SCP Inc., Abaco Systems, Inc. and Ametek Programmable Power, Inc. Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs)	$1,113,681	0.2%	Rank history: #42 in FY2022, #86 in FY2023 and not on the FY2024–FY2025 lists; up 205 since FY2020.
80	Jag Components, LLC Top agencies DLA (Defense Logistics Agency)	$1,106,330	0.2%	Rank history: not on the FY2022–FY2023 lists, #94 in FY2024 and #87 in FY2025; up 107 since FY2020.
81	Statz Corp Top agencies DLA (Defense Logistics Agency)	$1,103,796	0.2%	Rank history: #70 in FY2022 and not on the FY2023–FY2025 lists; down 26 since FY2020.
82	Bright Lights Usa, Inc. Top agencies Army (Department of the Army)	$1,093,409	0.2%	Rank history: not on the FY2022 list, #100 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
83	Integrated Procurement Technologies Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,075,198	0.2%	Rank history: not on the FY2022–FY2025 lists; up 19 since FY2020.
84	Dynalec Corporation Top agencies DLA (Defense Logistics Agency)	$1,072,573	0.2%	Rank history: not on the FY2022–FY2024 lists and #49 in FY2025; up 56 since FY2020.
85	Ampco-Pittsburgh Corporation Through Air & Liquid Systems Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,057,250	0.2%	Rank history: not on the FY2022–FY2025 lists; up 57 since FY2020.
86	OM Group Inc. Through Eaglepicher Technologies LLC Top agencies Navy (Department of the Navy)	$1,056,516	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
87	Custom Manufacturing & Engineering, Inc. Top agencies Navy (Department of the Navy)	$1,037,472	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
88	D.p. Brown of Pennsylvania, Corp Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,014,359	0.2%	Rank history: not on the FY2022 list, #90 in FY2023 and not on the FY2024–FY2025 lists; up 27 since FY2020.
89	Blue Cord Logistic Strategies Inc. Top agencies DLA (Defense Logistics Agency)	$1,008,952	0.1%	Rank history: not on the FY2022–FY2025 lists; up 185 since FY2020.
90	Meggitt PLC 5 awardees, including Meggitt North Hollywood Inc., Meggitt (Uk) Limited and Meggitt (Orange County), Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,003,308	0.1%	Rank history: not on the FY2022–FY2025 lists; up 10 since FY2020.
91	DVM Manufacturing LLC Top agencies Commerce (Department of Commerce)	$986,167	0.1%	Rank history: not on the FY2022–FY2025 lists; up 17 since FY2020.
92	The L.c.doane Company Top agencies DLA (Defense Logistics Agency)	$981,765	0.1%	Rank history: not on the FY2022–FY2025 lists; up 55 since FY2020.
93	Marine Air Supply Co., Inc. Top agencies DLA (Defense Logistics Agency)	$964,020	0.1%	Rank history: #87 in FY2022 and not on the FY2023–FY2025 lists; up 6 since FY2020.
94	Applied Controls Inc. Top agencies Navy (Department of the Navy)	$963,003	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
95	Caterpillar Inc. Top agencies DOT (Department of Transportation) DHS (Department of Homeland Security)	$962,307	0.1%	Rank history: #19 in FY2022 and not on the FY2023–FY2025 lists; up 14 since FY2020.
96	Windward Enterprises, LLC Top agencies DLA (Defense Logistics Agency)	$959,774	0.1%	Rank history: not on the FY2022 list, #74 in FY2023 and not on the FY2024–FY2025 lists; down 25 since FY2020.
97	Adirondack Electronics Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$946,341	0.1%	Rank history: #100 in FY2022 and not on the FY2023–FY2025 lists; down 30 since FY2020.
98	Johnson Controls Security Solutions LLC 2 awardees, including Johnson Controls Navy Systems, LLC and Johnson Controls Fire Protection LP Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Commerce (Department of Commerce)	$939,285	0.1%	Rank history: #79 in FY2022 and not on the FY2023–FY2025 lists; up 136 since FY2020.
99	Lektron Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$924,598	0.1%	Rank history: not on the FY2022 list, #89 in FY2023, not on the FY2024 list and #39 in FY2025; up 67 since FY2020.
100	American Engineering Corporation Top agencies Navy (Department of the Navy)	$919,921	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.

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100 of 1,555 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 33531

Code	Net obligations	Largest contractor
335312 Motor and Generator Manufacturing	$344,837,235	Cummins Inc.
335311 Power, Distribution, and Specialty Transformer Manufacturing	$182,139,186	Tepco Energy Partner Incorporated
335313 Switchgear and Switchboard Apparatus Manufacturing	$71,909,256	Leonardo S.p.A.
335314 Relay and Industrial Control Manufacturing	$46,250,629	Slc-Sac JV 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 $674 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 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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 33531 contractors in FY2021?

1. Cummins Inc. ($102M), 2. PD Power Systems, LLC ($42.7M), 3. Tepco Energy Partner Incorporated ($35.5M), 4. Kohler Co. ($16.4M), 5. RCT Systems, Inc. ($16.2M), 6. L3Harris Technologies, Inc. ($11.9M), 7. Andritz AG ($11.6M), 8. Siemens Aktiengesellschaft ($11.6M), 9. ECI Defense Group, Inc. ($11.6M), 10. Schneider Electric Buildings Americas Inc. ($10.9M).

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