Top 100 Contractors in PSC 1660: Aircraft Air Conditioning, Heating, and Pressurizing Equipment, FY2021

Name: Top 100 Contractors in PSC 1660: Aircraft Air Conditioning, Heating, and Pressurizing Equipment, FY2021
Creator: GovTribe

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

The top 10 won 56% of FY2021 PSC 1660 contract dollars

Contract obligations: $104,257,758 Net of deobligations, by contracts coded PSC 1660
Contractors: 250 Parent companies with an obligation
Largest contractor: Essex Industries Inc. $18.5 million, 14.7% 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	Essex Industries Inc. 5 awardees Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$18,477,512	14.7%	Rank history: #3 in FY2022, #1 in FY2023, #3 in FY2024 and #9 in FY2025; up 6 since FY2020.
2	RTX Corporation 7 awardees, including Rockwell Collins, Inc., Hamilton Sundstrand Corporation and Rosemount Aerospace Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$12,562,094	10.0%	Rank history: #2 in FY2022, #5 in FY2023, #1 in FY2024 and #4 in FY2025; up 4 since FY2020.
3	SAFRAN 4 awardees, including Avox Systems Inc., Safran Aerosystems Services Americas, LLC and Safran Helicopter Engines Usa, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$12,224,034	9.7%	Rank history: #7 in FY2022, #7 in FY2023, #5 in FY2024 and #3 in FY2025; up 1 since FY2020.
4	Honeywell International Inc. 8 awardees Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$6,828,943	5.4%	Rank history: #1 in FY2022, #4 in FY2023, #2 in FY2024 and #1 in FY2025; down 1 since FY2020.
5	ECI Defense Group, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$6,244,633	5.0%	Rank history: #4 in FY2022, #2 in FY2023, #4 in FY2024 and #2 in FY2025; up 3 since FY2020.
6	Lockheed Martin Corporation 5 awardees, including Sikorsky Aircraft Corporation and Derco Aerospace, Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$3,243,108	2.6%	Rank history: #8 in FY2022, #6 in FY2023, #8 in FY2024 and #11 in FY2025; down 4 since FY2020.
7	Aerometals, Inc. Top agencies DLA (Defense Logistics Agency)	$2,768,320	2.2%	Rank history: #15 in FY2022, #14 in FY2023, #11 in FY2024 and #10 in FY2025; up 6 since FY2020.
8	Cobham Advanced Electronic Solutions Inc. 2 awardees, including Mission Systems Davenport Inc. and Mission Systems Orchard Park Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$2,633,050	2.1%	Rank history: not on the FY2022–FY2025 lists; down 7 since FY2020.
9	The Boeing Company 7 awardees, including Boeing Distribution Services X, Inc. and Boeing Distribution Services, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,512,203	2.0%	Rank history: #12 in FY2022, #17 in FY2023, #7 in FY2024 and #6 in FY2025; up 1 since FY2020.
10	S3 International LLC Through S3 Aerodefense LLC Top agencies DLA (Defense Logistics Agency)	$2,406,234	1.9%	Rank history: #17 in FY2022, #12 in FY2023, #41 in FY2024 and not on the FY2025 list; up 8 since FY2020.
11	Northrop Grumman Corporation 4 awardees, including Northrop Grumman Systems Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,382,517	1.9%	Rank history: not on the FY2022 list, #11 in FY2023, #19 in FY2024 and #48 in FY2025; unchanged since FY2020.
12	Aero Precision Industries LLC 2 awardees, including Allclear Aerospace & Defense, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$1,886,609	1.5%	Rank history: #14 in FY2022, #28 in FY2023, #65 in FY2024 and not on the FY2025 list; up 152 since FY2020.
13	Aerokool Aviation Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$1,771,274	1.4%	Rank history: #27 in FY2022, #15 in FY2023, #35 in FY2024 and not on the FY2025 list; up 15 since FY2020.
14	Aristocracy, LLC Top agencies USAF (Department of the Air Force)	$1,437,249	1.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
15	Heico Aerospace Corporat 5 awardees, including Seal Dynamics LLC, Aerospace & Commercial Technologies, LLC and Jet Avion Corp Top agencies DLA (Defense Logistics Agency)	$1,427,597	1.1%	Rank history: #25 in FY2022, #13 in FY2023, #18 in FY2024 and #20 in FY2025; up 28 since FY2020.
16	Transaero, Inc. Top agencies DLA (Defense Logistics Agency)	$1,274,616	1.0%	Rank history: #64 in FY2022, #34 in FY2023, not on the FY2024 list and #72 in FY2025; up 30 since FY2020.
17	Wall Co., Incorporated Through Wall Colmonoy Corp Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$1,269,051	1.0%	Rank history: #31 in FY2022 and not on the FY2023–FY2025 lists; up 16 since FY2020.
18	Allied Defense Industries Inc. 2 awardees, including Aero International, LLC Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$1,209,686	1.0%	Rank history: #45 in FY2022 and not on the FY2023–FY2025 lists; up 20 since FY2020.
19	Jamaica Bearings Co., Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$991,265	0.8%	Rank history: #36 in FY2022, #27 in FY2023, #44 in FY2024 and #42 in FY2025; down 2 since FY2020.
20	Moog Inc. 2 awardees Top agencies DLA (Defense Logistics Agency)	$885,703	0.7%	Rank history: #19 in FY2022, #21 in FY2023, #22 in FY2024 and #21 in FY2025; unchanged since FY2020.
21	United Dynamics, Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$885,489	0.7%	Rank history: #20 in FY2022, #32 in FY2023, #20 in FY2024 and #35 in FY2025; up 9 since FY2020.
22	Transdigm Group Incorporated 7 awardees, including Kirkhill, Inc., Champion Aerospace LLC and Duke's Aerospace, Inc. Top agencies DLA (Defense Logistics Agency)	$797,668	0.6%	Rank history: #59 in FY2022, #16 in FY2023 and not on the FY2024–FY2025 lists; up 48 since FY2020.
23	Aero Specialties Inc. Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$762,030	0.6%	Rank history: not on the FY2022–FY2025 lists; up 19 since FY2020.
24	Tat Technologies Ltd Through Limco Airepair Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$740,550	0.6%	Rank history: #13 in FY2022 and not on the FY2023–FY2025 lists; down 8 since FY2020.
25	Allied Materials & Equipment Co Inc. Top agencies DLA (Defense Logistics Agency)	$736,281	0.6%	Rank history: not on the FY2022 list, #37 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2020.
26	The Handy Tool & Mfg. Co., Inc. Top agencies DLA (Defense Logistics Agency)	$683,283	0.5%	Rank history: #24 in FY2022, #29 in FY2023, #38 in FY2024 and #27 in FY2025; up 15 since FY2020.
27	Fluid Power, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$561,614	0.4%	Rank history: #26 in FY2022, #42 in FY2023, #69 in FY2024 and #34 in FY2025; up 7 since FY2020.
28	Senior PLC Through Senior Operations LLC Top agencies DLA (Defense Logistics Agency)	$472,737	0.4%	Rank history: #90 in FY2022 and not on the FY2023–FY2025 lists; down 5 since FY2020.
29	BAE Systems PLC 3 awardees, including BAE Systems (Operations) Limited and BAE Systems Land & Armaments L.P. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$418,683	0.3%	Rank history: not on the FY2022–FY2025 lists; up 11 since FY2020.
30	Triumph Group, Inc. Through Triumph Thermal Systems, LLC Top agencies USAF (Department of the Air Force)	$409,394	0.3%	Rank history: #56 in FY2022, #52 in FY2023 and not on the FY2024–FY2025 lists; down 11 since FY2020.
31	Globe Engineering Co., Inc. Top agencies DLA (Defense Logistics Agency)	$407,167	0.3%	Rank history: #37 in FY2022, #23 in FY2023, #28 in FY2024 and #50 in FY2025; up 20 since FY2020.
32	FDH Defense Aftermarket, LLC Top agencies DLA (Defense Logistics Agency)	$405,599	0.3%	Rank history: #58 in FY2022, #35 in FY2023, #36 in FY2024 and #39 in FY2025; down 10 since FY2020.
33	Sherwood Avionics and Accessories, Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$383,644	0.3%	Rank history: #16 in FY2022, #31 in FY2023, #47 in FY2024 and #38 in FY2025; down 4 since FY2020.
34	Mission Systems Davenport Inc. Top agencies DLA (Defense Logistics Agency)	$357,077	0.3%	Rank history: #32 in FY2022, not on the FY2023 list, #10 in FY2024 and #40 in FY2025; up 151 since FY2020.
35	Alek Industries Inc. Top agencies DLA (Defense Logistics Agency)	$336,587	0.3%	Rank history: not on the FY2022–FY2025 lists; up 203 since FY2020.
36	Ametek Inc. 2 awardees, including Ametek Thermal Systems Inc. and Drake Air, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$333,693	0.3%	Rank history: #30 in FY2022, #3 in FY2023, #46 in FY2024 and not on the FY2025 list; up 152 since FY2020.
37	Penco Products Inc. Through Arrowhead Products Corp Top agencies DLA (Defense Logistics Agency)	$310,464	0.2%	Rank history: #39 in FY2022, #45 in FY2023 and not on the FY2024–FY2025 lists; up 25 since FY2020.
38	RU Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$297,289	0.2%	Rank history: #28 in FY2022, not on the FY2023 list, #50 in FY2024 and #32 in FY2025; up 106 since FY2020.
39	Corgistics, Inc. Top agencies DLA (Defense Logistics Agency)	$289,312	0.2%	Rank history: #77 in FY2022, #75 in FY2023, #93 in FY2024 and #18 in FY2025; up 92 since FY2020.
40	Meggitt PLC 2 awardees, including Meggitt North Hollywood Inc. and Meggitt Defense Systems, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$270,730	0.2%	Rank history: #79 in FY2022 and not on the FY2023–FY2025 lists; up 15 since FY2020.
41	System Technical Support Corporation Top agencies DLA (Defense Logistics Agency)	$247,954	0.2%	Rank history: #53 in FY2022 and not on the FY2023–FY2025 lists; down 15 since FY2020.
42	Integrated Procurement Technologies Top agencies DLA (Defense Logistics Agency)	$226,022	0.2%	Rank history: #67 in FY2022 and not on the FY2023–FY2025 lists; down 3 since FY2020.
43	Repairtech International, Inc. Top agencies USAF (Department of the Air Force)	$217,483	0.2%	Rank history: #35 in FY2022, not on the FY2023 list, #100 in FY2024 and not on the FY2025 list; up 13 since FY2020.
44	General Electric Company 3 awardees, including GE Aviation Systems LLC Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$208,919	0.2%	Rank history: #48 in FY2022, #41 in FY2023, not on the FY2024 list and #44 in FY2025; up 3 since FY2020.
45	Brighton Cromwell LLC Top agencies DLA (Defense Logistics Agency)	$205,965	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
46	Statz Corp Top agencies DLA (Defense Logistics Agency)	$205,398	0.2%	Rank history: not on the FY2022–FY2025 lists; up 75 since FY2020.
47	Windward Enterprises, LLC Top agencies DLA (Defense Logistics Agency)	$204,212	0.2%	Rank history: #88 in FY2022, #77 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2020.
48	Aero Space Composites LLC Top agencies DLA (Defense Logistics Agency)	$203,935	0.2%	Rank history: #92 in FY2022, not on the FY2023 list, #91 in FY2024 and #70 in FY2025; up 53 since FY2020.
49	G.s.e. Dynamics, Inc. Top agencies DLA (Defense Logistics Agency)	$193,460	0.2%	Rank history: #18 in FY2022, #43 in FY2023, #67 in FY2024 and #26 in FY2025; new, not ranked in FY2020.
50	Ocenco Inc. Top agencies DLA (Defense Logistics Agency)	$184,857	0.1%	Rank history: #65 in FY2022 and not on the FY2023–FY2025 lists; up 15 since FY2020.
51	Gigli Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$179,583	0.1%	Rank history: #96 in FY2022, #71 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2020.
52	Bell Boeing Joint Project Office Top agencies DLA (Defense Logistics Agency)	$175,938	0.1%	Rank history: #33 in FY2022, #26 in FY2023, #23 in FY2024 and #37 in FY2025; down 25 since FY2020.
53	Noresco LLC Through HS Marston Aerospace Limited Top agencies DLA (Defense Logistics Agency)	$175,537	0.1%	Rank history: not on the FY2022–FY2025 lists; up 106 since FY2020.
54	Cobham Advanced Electron 2 awardees, including Mission Systems Davenport Inc. and Mission Systems Orchard Park Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$174,611	0.1%	Rank history: #22 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
55	Aero Components, LLC Top agencies DLA (Defense Logistics Agency)	$174,062	0.1%	Rank history: #10 in FY2022, not on the FY2023 list, #98 in FY2024 and #76 in FY2025; up 211 since FY2020.
56	Military Aircraft Parts Top agencies DLA (Defense Logistics Agency)	$173,942	0.1%	Rank history: #55 in FY2022, #65 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
57	WKF (Friedman) Enterprises, Inc. 2 awardees Top agencies DLA (Defense Logistics Agency)	$162,736	0.1%	Rank history: not on the FY2022–FY2024 lists and #73 in FY2025; up 15 since FY2020.
58	Bar Fields Inc. Top agencies DLA (Defense Logistics Agency)	$162,070	0.1%	Rank history: not on the FY2022 list, #83 in FY2023, #97 in FY2024 and not on the FY2025 list; up 3 since FY2020.
59	Oxford Aviation Limited Top agencies DLA (Defense Logistics Agency)	$161,904	0.1%	Rank history: #68 in FY2022, #90 in FY2023 and not on the FY2024–FY2025 lists; up 23 since FY2020.
60	Great Lakes Sound & Vibration Inc. Top agencies DLA (Defense Logistics Agency)	$157,920	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
61	Synergetic Technologies Group, Inc. Top agencies DLA (Defense Logistics Agency)	$150,660	0.1%	Rank history: not on the FY2022 list, #91 in FY2023 and not on the FY2024–FY2025 lists; up 131 since FY2020.
62	Burhani Enterprises Inc. Top agencies DLA (Defense Logistics Agency)	$150,603	0.1%	Rank history: not on the FY2022–FY2023 lists, #99 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
63	Industrial Welding & Engineering Co. Top agencies DLA (Defense Logistics Agency)	$148,745	0.1%	Rank history: not on the FY2022–FY2025 lists; up 89 since FY2020.
64	Chemring Group PLC Through Chemring Energetic Devices Inc. Top agencies USAF (Department of the Air Force)	$143,331	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
65	BBA Aviation PLC Through Ontic Engineering & Manufacturing, Inc. Top agencies DLA (Defense Logistics Agency)	$139,448	0.1%	Rank history: #82 in FY2022, #58 in FY2023 and not on the FY2024–FY2025 lists; up 143 since FY2020.
66	Sikorsky Aircraft Corporation Top agencies DLA (Defense Logistics Agency)	$136,694	0.1%	Rank history: not on the FY2022–FY2025 lists; down 13 since FY2020.
67	Leadero, Inc. Top agencies DLA (Defense Logistics Agency)	$130,188	0.1%	Rank history: #71 in FY2022, #97 in FY2023 and not on the FY2024–FY2025 lists; up 111 since FY2020.
68	Bahr Machine Co Top agencies DLA (Defense Logistics Agency)	$128,482	0.1%	Rank history: #47 in FY2022, #96 in FY2023, #63 in FY2024 and not on the FY2025 list; up 10 since FY2020.
69	Janels Industries Inc. Top agencies DLA (Defense Logistics Agency)	$126,730	0.1%	Rank history: not on the FY2022 list, #56 in FY2023, not on the FY2024 list and #55 in FY2025; new, not ranked in FY2020.
70	Parker-Hannifin Corporation Top agencies DLA (Defense Logistics Agency)	$125,312	0.1%	Rank history: #42 in FY2022, #66 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2020.
71	The Dewey Electronics Corporation Top agencies DLA (Defense Logistics Agency)	$124,730	0.1%	Rank history: #85 in FY2022, #18 in FY2023, not on the FY2024 list and #92 in FY2025; up 23 since FY2020.
72	Textron Inc. Through Bell Textron Inc. Top agencies DLA (Defense Logistics Agency)	$124,338	0.1%	Rank history: #69 in FY2022 and not on the FY2023–FY2025 lists; up 170 since FY2020.
73	L.r.g. Corporation Top agencies DLA (Defense Logistics Agency)	$120,780	0.1%	Rank history: not on the FY2022–FY2025 lists; up 85 since FY2020.
74	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency)	$115,182	0.1%	Rank history: not on the FY2022–FY2023 lists, #90 in FY2024 and not on the FY2025 list; down 6 since FY2020.
75	Senior Operations LLC Top agencies DLA (Defense Logistics Agency)	$113,193	0.1%	Rank history: not on the FY2022–FY2024 lists and #79 in FY2025; up 9 since FY2020.
76	Honeywell Limited Through Honeywell Aerospace International Inc. Top agencies DLA (Defense Logistics Agency)	$112,203	0.1%	Rank history: not on the FY2022 list, #85 in FY2023 and not on the FY2024–FY2025 lists; up 127 since FY2020.
77	Sera Star, LLC Top agencies DLA (Defense Logistics Agency)	$104,897	0.1%	Rank history: not on the FY2022–FY2025 lists; up 41 since FY2020.
78	Brown Helicopter, Inc. Top agencies DLA (Defense Logistics Agency)	$100,245	0.1%	Rank history: #44 in FY2022, #57 in FY2023, #73 in FY2024 and #36 in FY2025; down 2 since FY2020.
79	Tri-State Plastics, Inc. Top agencies DLA (Defense Logistics Agency)	$99,080	0.1%	Rank history: not on the FY2022–FY2024 lists and #99 in FY2025; up 63 since FY2020.
80	Avox Systems Inc. Top agencies DLA (Defense Logistics Agency)	$97,758	0.1%	Rank history: not on the FY2022–FY2025 lists; down 35 since FY2020.
81	First State Manufacturing Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$97,580	0.1%	Rank history: not on the FY2022–FY2025 lists; up 59 since FY2020.
82	Aiw-Alton Inc. Top agencies DLA (Defense Logistics Agency)	$94,980	0.1%	Rank history: not on the FY2022–FY2023 lists, #58 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
83	The Glenmark Group LLC Top agencies DHS (Department of Homeland Security)	$94,584	0.1%	Rank history: #86 in FY2022, #68 in FY2023, #86 in FY2024 and #56 in FY2025; down 4 since FY2020.
84	Lobo Ventures Ltd Top agencies DLA (Defense Logistics Agency)	$90,252	0.1%	Rank history: #21 in FY2022, #38 in FY2023, #40 in FY2024 and #14 in FY2025; down 13 since FY2020.
85	Service & Sales Inc. Top agencies DLA (Defense Logistics Agency)	$88,846	0.1%	Rank history: #60 in FY2022, #76 in FY2023 and not on the FY2024–FY2025 lists; down 10 since FY2020.
86	Aero Defense Logistics LLC Top agencies DLA (Defense Logistics Agency)	$88,314	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
87	Crane Co Through Hydro-Aire Aerospace Corp Top agencies DLA (Defense Logistics Agency)	$87,353	0.1%	Rank history: #46 in FY2022, #30 in FY2023 and not on the FY2024–FY2025 lists; down 24 since FY2020.
88	Marotta Controls Inc. Top agencies DLA (Defense Logistics Agency)	$87,000	0.1%	Rank history: #91 in FY2022, #62 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2020.
89	Aeromax Industries, Inc. Top agencies DLA (Defense Logistics Agency)	$86,287	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
90	Maney Aircraft, Inc. Top agencies DLA (Defense Logistics Agency)	$84,000	0.1%	Rank history: not on the FY2022–FY2023 lists, #27 in FY2024 and #77 in FY2025; up 96 since FY2020.
91	Mhd-Rockland Inc. Top agencies DLA (Defense Logistics Agency)	$82,868	0.1%	Rank history: not on the FY2022–FY2023 lists, #52 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
92	R & M Government Services Inc. Top agencies DLA (Defense Logistics Agency)	$82,448	0.1%	Rank history: not on the FY2022–FY2025 lists; up 54 since FY2020.
93	Weckworth Manufacturing, Inc. Top agencies DLA (Defense Logistics Agency)	$80,438	0.1%	Rank history: not on the FY2022 list, #60 in FY2023, not on the FY2024 list and #67 in FY2025; up 2 since FY2020.
94	Malones CNC Machining Inc. Top agencies DLA (Defense Logistics Agency)	$79,706	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
95	Greenwich AeroGroup Inc. Through Aero Precision Industries LLC Top agencies DLA (Defense Logistics Agency)	$78,844	0.1%	Rank history: not on the FY2022–FY2025 lists; up 52 since FY2020.
96	Echelon Supply and Service, Inc. Top agencies DLA (Defense Logistics Agency)	$75,356	0.1%	Rank history: #34 in FY2022 and not on the FY2023–FY2025 lists; up 104 since FY2020.
97	Linmarr Associates, Inc. Top agencies DLA (Defense Logistics Agency)	$72,232	0.1%	Rank history: not on the FY2022 list, #20 in FY2023, #70 in FY2024 and not on the FY2025 list; up 140 since FY2020.
98	Sunpower Corporation Through Hutchinson Aerospace & Industry, Inc. Top agencies DLA (Defense Logistics Agency)	$70,680	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	Szczypski, Michael Top agencies DLA (Defense Logistics Agency)	$69,096	0.1%	Rank history: #84 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
100	Aviarms Support Corp Top agencies DLA (Defense Logistics Agency)	$66,901	0.1%	Rank history: not on the FY2022 list, #89 in FY2023, #77 in FY2024 and not on the FY2025 list; down 13 since FY2020.

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100 of 250 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 $126 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 PSC 1660 contractors in FY2021?

1. Essex Industries Inc. ($18.5M), 2. RTX Corporation ($12.6M), 3. SAFRAN ($12.2M), 4. Honeywell International Inc. ($6.83M), 5. ECI Defense Group, Inc. ($6.24M), 6. Lockheed Martin Corporation ($3.24M), 7. Aerometals, Inc. ($2.77M), 8. Cobham Advanced Electronic Solutions Inc. ($2.63M), 9. The Boeing Company ($2.51M), 10. S3 International LLC ($2.41M).

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