Top 100 Contractors in PSC 4920: Aircraft Maintenance and Repair Shop Specialized Equipment, FY2021

Name: Top 100 Contractors in PSC 4920: Aircraft Maintenance and Repair Shop Specialized Equipment, FY2021
Creator: GovTribe

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

The top 10 won 47% of FY2021 PSC 4920 contract dollars

Contract obligations: $299,355,015 Net of deobligations, by contracts coded PSC 4920
Contractors: 544 Parent companies with an obligation
Largest contractor: The Boeing Company $37.1 million, 11.9% 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 Boeing Company 7 awardees, including Insitu, Inc. and Boeing Distribution, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$37,053,156	11.9%	Rank history: #2 in FY2022, #1 in FY2023, #1 in FY2024 and #6 in FY2025; up 1 since FY2020.
2	Northrop Grumman Corporation 8 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$22,902,912	7.3%	Rank history: #1 in FY2022, #3 in FY2023, #7 in FY2024 and #2 in FY2025; down 1 since FY2020.
3	Redtown LLC Through Redtown Technical Services, LLC Top agencies Army (Department of the Army)	$21,527,127	6.9%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
4	Hydraulics International, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$13,822,748	4.4%	Rank history: #3 in FY2022, #10 in FY2023, #8 in FY2024 and #7 in FY2025; up 8 since FY2020.
5	Lockheed Martin Corporation 10 awardees, including Sikorsky Aircraft Corporation and Derco Aerospace, Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$13,427,284	4.3%	Rank history: #23 in FY2022, #16 in FY2023, #2 in FY2024 and #5 in FY2025; down 1 since FY2020.
6	BAE Systems PLC 6 awardees, including BAE Systems Information and Electronic Systems Integration Inc., BAE Systems Controls Inc. and BAE Systems Land & Armaments L.P. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$9,753,524	3.1%	Rank history: #43 in FY2022, #9 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
7	General Electric Company 4 awardees, including Druck, LLC and GE Aviation Systems LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$7,010,819	2.2%	Rank history: #59 in FY2022, #33 in FY2023, #78 in FY2024 and not on the FY2025 list; up 10 since FY2020.
8	Textron Inc. 3 awardees, including Textron Systems Corporation, Bell Textron Inc. and Textron Ground Support Equipment Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$6,834,911	2.2%	Rank history: #12 in FY2022, #34 in FY2023, #22 in FY2024 and #13 in FY2025; down 5 since FY2020.
9	L3Harris Technologies, Inc. 9 awardees, including L3 Technologies, Inc., Acron Aviation, Inc. and Fisica Applied Technologies, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$6,683,880	2.1%	Rank history: not on the FY2022–FY2025 lists; up 56 since FY2020.
10	Technical Communities, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$6,631,573	2.1%	Rank history: not on the FY2022–FY2023 lists, #70 in FY2024 and not on the FY2025 list; up 272 since FY2020.
11	KDY Automation Solutions, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$6,574,552	2.1%	Rank history: #18 in FY2022, not on the FY2023–FY2024 lists and #45 in FY2025; up 14 since FY2020.
12	Rockwell Collins, Inc. Top agencies Navy (Department of the Navy)	$6,188,880	2.0%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
13	Teradyne Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$6,074,624	1.9%	Rank history: #4 in FY2022, #8 in FY2023, #12 in FY2024 and #3 in FY2025; down 2 since FY2020.
14	ST Engineering Halter Marine and Offshore Inc. Through Ecoservices, LLC Top agencies Navy (Department of the Navy)	$5,934,135	1.9%	Rank history: #41 in FY2022 and not on the FY2023–FY2025 lists; up 134 since FY2020.
15	Howell Instruments, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$4,895,264	1.6%	Rank history: #14 in FY2022, #27 in FY2023, #40 in FY2024 and #22 in FY2025; down 2 since FY2020.
16	Thales 2 awardees, including Thales Defense & Security Inc. and Thales AVS France SAS Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$4,590,000	1.5%	Rank history: #5 in FY2022 and not on the FY2023–FY2025 lists; up 48 since FY2020.
17	Trade Mechanical Contractors Inc. Top agencies USAF (Department of the Air Force)	$4,444,500	1.4%	Rank history: not on the FY2022–FY2024 lists and #60 in FY2025; new, not ranked in FY2020.
18	Titan Robotics Inc. Top agencies USAF (Department of the Air Force)	$4,070,000	1.3%	Rank history: not on the FY2022–FY2024 lists and #9 in FY2025; new, not ranked in FY2020.
19	Rhinestahl Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$3,638,674	1.2%	Rank history: #22 in FY2022, #32 in FY2023 and not on the FY2024–FY2025 lists; up 16 since FY2020.
20	Products Support, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$3,614,157	1.2%	Rank history: #29 in FY2022, not on the FY2023 list, #35 in FY2024 and not on the FY2025 list; up 221 since FY2020.
21	Rohde & Schwarz GMBH & Co. KG Through Rohde & Schwarz Usa, Inc. Top agencies USAF (Department of the Air Force)	$2,735,753	0.9%	Rank history: #79 in FY2022, #23 in FY2023, not on the FY2024 list and #29 in FY2025; new, not ranked in FY2020.
22	R.s.l. Electronics Limited Through RSL Electronics USA Inc. Top agencies USAF (Department of the Air Force)	$2,604,362	0.8%	Rank history: #82 in FY2022, #68 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
23	Bauer, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$2,598,155	0.8%	Rank history: #28 in FY2022, #21 in FY2023, not on the FY2024 list and #32 in FY2025; down 4 since FY2020.
24	R.p. Gatta, Inc. Top agencies USAF (Department of the Air Force)	$2,517,069	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
25	VRC Metal Systems, LLC Top agencies Navy (Department of the Navy)	$2,500,894	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
26	Testek LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$2,392,261	0.8%	Rank history: #8 in FY2022, #4 in FY2023, #16 in FY2024 and #18 in FY2025; down 18 since FY2020.
27	Druck, LLC Top agencies Navy (Department of the Navy)	$2,308,860	0.7%	Rank history: #46 in FY2022, not on the FY2023–FY2024 lists and #66 in FY2025; new, not ranked in FY2020.
28	Safespill Systems LLC Top agencies Navy (Department of the Navy)	$2,304,198	0.7%	Rank history: not on the FY2022–FY2025 lists; up 10 since FY2020.
29	Industrial Automation Inc. Top agencies Navy (Department of the Navy)	$2,276,262	0.7%	Rank history: not on the FY2022 list, #30 in FY2023 and not on the FY2024–FY2025 lists; down 8 since FY2020.
30	Drytech Inc. Top agencies Navy (Department of the Navy)	$2,113,911	0.7%	Rank history: #32 in FY2022, #35 in FY2023, #30 in FY2024 and #43 in FY2025; up 9 since FY2020.
31	The Entwistle Trust Through The Entwistle Company LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$2,020,456	0.6%	Rank history: #65 in FY2022, not on the FY2023 list, #66 in FY2024 and not on the FY2025 list; up 124 since FY2020.
32	BAE Systems Land & Armaments L.P. 4 awardees, including BAE Systems Information and Electronic Systems Integration Inc. Top agencies USAF (Department of the Air Force)	$1,954,713	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
33	Technology for Energy Corp Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,913,311	0.6%	Rank history: #21 in FY2022, #46 in FY2023, not on the FY2024 list and #59 in FY2025; down 6 since FY2020.
34	Rockwell Collins-ESA Vision Systems Limited Liability Compan Through Collins Elbit Vision Systems, LLC Top agencies Navy (Department of the Navy)	$1,887,758	0.6%	Rank history: #11 in FY2022 and not on the FY2023–FY2025 lists; down 5 since FY2020.
35	Malabar Top agencies Navy (Department of the Navy)	$1,754,836	0.6%	Rank history: not on the FY2022–FY2025 lists; up 53 since FY2020.
36	Aeroforge, Inc. Top agencies Navy (Department of the Navy)	$1,707,156	0.5%	Rank history: not on the FY2022–FY2025 lists; up 34 since FY2020.
37	Blade Diagnostics Corporation Top agencies USAF (Department of the Air Force)	$1,612,501	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
38	TLD America Corporation Top agencies Navy (Department of the Navy)	$1,577,511	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
39	Cobham Advanced Electron 2 awardees, including Mission Systems Davenport Inc. and Caes Systems LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$1,571,904	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
40	Atap Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$1,462,838	0.5%	Rank history: #40 in FY2022, #12 in FY2023, #18 in FY2024 and #16 in FY2025; up 10 since FY2020.
41	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$1,428,695	0.5%	Rank history: #45 in FY2022, #57 in FY2023, #55 in FY2024 and #56 in FY2025; up 15 since FY2020.
42	Seyer Industries, Inc. Top agencies Navy (Department of the Navy)	$1,424,079	0.5%	Rank history: #64 in FY2022, #25 in FY2023 and not on the FY2024–FY2025 lists; down 12 since FY2020.
43	National Instruments Corp Top agencies USAF (Department of the Air Force)	$1,396,466	0.4%	Rank history: #17 in FY2022, #65 in FY2023, #67 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
44	Parts Life Inc. 2 awardees, including Deval Life Cycle Support LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,390,544	0.4%	Rank history: not on the FY2022–FY2025 lists; down 30 since FY2020.
45	Greene Machine & Manufacturing Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$1,325,942	0.4%	Rank history: #75 in FY2022, #15 in FY2023, #46 in FY2024 and not on the FY2025 list; up 3 since FY2020.
46	PCI Aviation LLC Top agencies Navy (Department of the Navy)	$1,232,130	0.4%	Rank history: #24 in FY2022, not on the FY2023 list, #15 in FY2024 and #87 in FY2025; unchanged since FY2020.
47	Tessec LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,227,874	0.4%	Rank history: not on the FY2022–FY2025 lists; down 25 since FY2020.
48	Alcoa Inc. Through Howmet Global Fastening Systems Inc. Top agencies DLA (Defense Logistics Agency)	$1,197,990	0.4%	Rank history: not on the FY2022–FY2025 lists; up 243 since FY2020.
49	Aerospace Control Products, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,182,477	0.4%	Rank history: #98 in FY2022, #63 in FY2023, not on the FY2024 list and #86 in FY2025; up 28 since FY2020.
50	Texas MGT Associates Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,092,581	0.4%	Rank history: not on the FY2022 list, #84 in FY2023 and not on the FY2024–FY2025 lists; up 224 since FY2020.
51	Heatcon, Inc. Through Heatcon Composite Systems, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$1,048,444	0.3%	Rank history: #60 in FY2022, #64 in FY2023 and not on the FY2024–FY2025 lists; down 15 since FY2020.
52	Keysight Technologies, Inc. Top agencies USAF (Department of the Air Force)	$1,031,671	0.3%	Rank history: #49 in FY2022, #37 in FY2023, #28 in FY2024 and #33 in FY2025; new, not ranked in FY2020.
53	Rolls-Royce Military Aero Engines Ltd 4 awardees, including Rolls-Royce Corporation, Rolls-Royce Deutschland Ltd & Co KG and Rolls-Royce Solutions America Inc. Top agencies Navy (Department of the Navy) DOT (Department of Transportation) DLA (Defense Logistics Agency)	$936,557	0.3%	Rank history: not on the FY2022 list, #67 in FY2023 and not on the FY2024–FY2025 lists; up 87 since FY2020.
54	Atec Inc. 3 awardees, including Celtech Corp Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$898,153	0.3%	Rank history: #67 in FY2022, #61 in FY2023, #4 in FY2024 and #1 in FY2025; up 1 since FY2020.
55	A.s.e., Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$896,099	0.3%	Rank history: not on the FY2022–FY2025 lists; down 4 since FY2020.
56	Science Applications International Corporation 3 awardees, including Asrc Federal Facilities Logistics, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$871,957	0.3%	Rank history: #9 in FY2022, #42 in FY2023, #90 in FY2024 and not on the FY2025 list; up 1 since FY2020.
57	The Day & Zimmermann Group, Inc. Through Sunrise Beach Corporation Top agencies DOJ (Department of Justice)	$869,376	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
58	Daniels Manufacturing Corporation Top agencies Army (Department of the Army) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$868,275	0.3%	Rank history: #42 in FY2022, #41 in FY2023 and not on the FY2024–FY2025 lists; up 24 since FY2020.
59	Transdigm Group Incorporated 4 awardees, including Breeze-Eastern LLC, Champion Aerospace LLC and Arkwin Industries, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$862,791	0.3%	Rank history: #38 in FY2022, #72 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2020.
60	Fastening Systems International Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$860,352	0.3%	Rank history: #81 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
61	Kratos Defense & Security Solutions, Inc. Through Kratos Unmanned Aerial Systems, Inc. Top agencies Navy (Department of the Navy)	$852,481	0.3%	Rank history: not on the FY2022–FY2025 lists; down 33 since FY2020.
62	Williamsrdm, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$772,913	0.2%	Rank history: not on the FY2022 list, #99 in FY2023, #95 in FY2024 and not on the FY2025 list; up 87 since FY2020.
63	Sunbelt Design & Development, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$755,519	0.2%	Rank history: #27 in FY2022, not on the FY2023 list, #91 in FY2024 and not on the FY2025 list; up 11 since FY2020.
64	S.a.i.m.a. of North America, Inc. Top agencies USAF (Department of the Air Force)	$740,372	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
65	Cutting Dynamics, LLC Top agencies DLA (Defense Logistics Agency)	$736,950	0.2%	Rank history: not on the FY2022–FY2023 lists, #21 in FY2024 and #19 in FY2025; new, not ranked in FY2020.
66	Precision Air Inc. Top agencies USAF (Department of the Air Force)	$692,551	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
67	Blue Moon Designs, LLC Top agencies Navy (Department of the Navy)	$674,600	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
68	Helitune Inc. Top agencies DLA (Defense Logistics Agency)	$655,072	0.2%	Rank history: #70 in FY2022, #31 in FY2023 and not on the FY2024–FY2025 lists; up 55 since FY2020.
69	Danaher Corporation 2 awardees, including Beckman Coulter, Inc. and Pall Aeropower Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$647,026	0.2%	Rank history: #35 in FY2022 and not on the FY2023–FY2025 lists; down 26 since FY2020.
70	ECI Defense Group, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$612,776	0.2%	Rank history: #52 in FY2022, #40 in FY2023, #43 in FY2024 and #40 in FY2025; up 20 since FY2020.
71	Electronic Warfare Associates, Inc. Through Corelis, Inc. Top agencies USAF (Department of the Air Force)	$584,345	0.2%	Rank history: #57 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
72	Boneal, Incorporated Top agencies USAF (Department of the Air Force)	$549,221	0.2%	Rank history: not on the FY2022 list, #22 in FY2023, #17 in FY2024 and #28 in FY2025; down 39 since FY2020.
73	Saginaw Products Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$515,173	0.2%	Rank history: not on the FY2022 list, #76 in FY2023 and not on the FY2024–FY2025 lists; up 18 since FY2020.
74	Stratasys Inc. Top agencies USAF (Department of the Air Force)	$510,221	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
75	Moog Inc. 2 awardees Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$505,355	0.2%	Rank history: #48 in FY2022, #54 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
76	Enrgies Inc. Top agencies DOT (Department of Transportation)	$497,982	0.2%	Rank history: not on the FY2022–FY2025 lists; down 39 since FY2020.
77	Double Rocker Holdings Inc. Through Womack Machine Supply Co., LLC Top agencies USAF (Department of the Air Force)	$491,183	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
78	Delflo Industries, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$491,051	0.2%	Rank history: not on the FY2022–FY2024 lists and #95 in FY2025; up 332 since FY2020.
79	Orion-Metco LLC Top agencies DLA (Defense Logistics Agency)	$474,970	0.2%	Rank history: not on the FY2022 list, #85 in FY2023 and not on the FY2024–FY2025 lists; up 54 since FY2020.
80	Tel-Instrument Electronics Corp Top agencies Navy (Department of the Navy)	$449,900	0.1%	Rank history: #16 in FY2022, #75 in FY2023, #44 in FY2024 and #31 in FY2025; up 62 since FY2020.
81	Habco Industries LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$439,439	0.1%	Rank history: #61 in FY2022, #59 in FY2023, #98 in FY2024 and #68 in FY2025; up 46 since FY2020.
82	Ultrax Aerospace Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$439,099	0.1%	Rank history: #26 in FY2022, #36 in FY2023, #86 in FY2024 and #42 in FY2025; down 50 since FY2020.
83	Empire Avionics Corp. Top agencies DLA (Defense Logistics Agency)	$430,613	0.1%	Rank history: #88 in FY2022, not on the FY2023 list, #50 in FY2024 and #88 in FY2025; up 43 since FY2020.
84	Tyonek Native Corporatio 4 awardees, including Tyonek Engineering & Agile Manufacturing LLC and Tyonek Machining and Fabrication, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$413,962	0.1%	Rank history: #20 in FY2022, #28 in FY2023, #37 in FY2024 and not on the FY2025 list; down 58 since FY2020.
85	Aero-Glen International LLC Top agencies DLA (Defense Logistics Agency)	$412,093	0.1%	Rank history: not on the FY2022–FY2025 lists; up 33 since FY2020.
86	Ion Corp Top agencies USAF (Department of the Air Force)	$402,334	0.1%	Rank history: #89 in FY2022 and not on the FY2023–FY2025 lists; up 45 since FY2020.
87	Chase Supply, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$397,982	0.1%	Rank history: not on the FY2022–FY2025 lists; up 50 since FY2020.
88	Carolina Ground Service Equipment Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$393,886	0.1%	Rank history: not on the FY2022–FY2025 lists; up 182 since FY2020.
89	Martin Military Inc. Top agencies DLA (Defense Logistics Agency)	$392,205	0.1%	Rank history: not on the FY2022–FY2025 lists; up 21 since FY2020.
90	Leonardo S.p.A. 3 awardees, including DRS Network & Imaging Systems LLC Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$387,758	0.1%	Rank history: not on the FY2022 list, #24 in FY2023, #29 in FY2024 and #26 in FY2025; down 59 since FY2020.
91	Astro Tool Texas Inc. Through Astro Tool Corp Top agencies Navy (Department of the Navy)	$382,108	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
92	Tyonek Machining and Fabrication, LLC Top agencies USAF (Department of the Air Force)	$369,736	0.1%	Rank history: not on the FY2022–FY2023 lists, #54 in FY2024 and #27 in FY2025; new, not ranked in FY2020.
93	Actuant Corporation Through Hydratight Operations Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$346,286	0.1%	Rank history: #91 in FY2022 and not on the FY2023–FY2025 lists; down 44 since FY2020.
94	Hofmann Mondial Inc Through American Hofmann Corp Top agencies Navy (Department of the Navy)	$344,594	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
95	Illinois Tool Works Inc. Through ITW GSE Inc. Top agencies DLA (Defense Logistics Agency)	$342,320	0.1%	Rank history: #87 in FY2022, #44 in FY2023 and not on the FY2024–FY2025 lists; up 66 since FY2020.
96	Eclypse International Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$338,193	0.1%	Rank history: #62 in FY2022, #20 in FY2023, #79 in FY2024 and not on the FY2025 list; down 76 since FY2020.
97	Grain Valley Tool & Mfg. Co., Inc. Top agencies DLA (Defense Logistics Agency)	$328,784	0.1%	Rank history: #85 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
98	Linmarr Associates, Inc. Top agencies DLA (Defense Logistics Agency)	$324,104	0.1%	Rank history: not on the FY2022–FY2025 lists; up 65 since FY2020.
99	Aviatrix Inc. Top agencies Navy (Department of the Navy)	$322,387	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	Ametek Inc. 3 awardees, including Ametek Programmable Power, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$317,372	0.1%	Rank history: not on the FY2022–FY2024 lists and #38 in FY2025; down 25 since FY2020.

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100 of 544 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 $312 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 4920 contractors in FY2021?

1. The Boeing Company ($37.1M), 2. Northrop Grumman Corporation ($22.9M), 3. Redtown LLC ($21.5M), 4. Hydraulics International, Inc. ($13.8M), 5. Lockheed Martin Corporation ($13.4M), 6. BAE Systems PLC ($9.75M), 7. General Electric Company ($7.01M), 8. Textron Inc. ($6.83M), 9. L3Harris Technologies, Inc. ($6.68M), 10. Technical Communities, Inc. ($6.63M).

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