Top 100 Contractors in PSC 4820: Valves, Nonpowered, FY2021

Name: Top 100 Contractors in PSC 4820: Valves, Nonpowered, FY2021
Creator: GovTribe

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

The top 10 won 33% of FY2021 PSC 4820 contract dollars

Contract obligations: $257,305,967 Net of deobligations, by contracts coded PSC 4820
Contractors: 854 Parent companies with an obligation
Largest contractor: Esco Technologies Inc. $13.8 million, 5.0% 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	Esco Technologies Inc. 2 awardees, including Vacco Industries and PTI Technologies Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$13,775,344	5.0%	Rank history: #1 in FY2022, #12 in FY2023, #1 in FY2024 and #12 in FY2025; up 2 since FY2020.
2	Hunt Valve Company, Inc. 5 awardees, including Pima Valve, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$13,733,790	5.0%	Rank history: #14 in FY2022, #3 in FY2023, #2 in FY2024 and #7 in FY2025; up 2 since FY2020.
3	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$9,654,765	3.5%	Rank history: #8 in FY2022, #18 in FY2023, #15 in FY2024 and #21 in FY2025; up 8 since FY2020.
4	Transaero, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$9,172,895	3.3%	Rank history: #4 in FY2022, #4 in FY2023, #5 in FY2024 and #13 in FY2025; up 3 since FY2020.
5	Science Applications International Corporation Through Asrc Federal Facilities Logistics, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$9,110,003	3.3%	Rank history: #5 in FY2022, #8 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
6	Sargent Aerospace & Defense LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$8,495,546	3.1%	Rank history: #2 in FY2022, #2 in FY2023, #8 in FY2024 and not on the FY2025 list; up 11 since FY2020.
7	RTX Corporation 9 awardees, including Hamilton Sundstrand Corporation, Goodrich Corporation and Hamilton Sunstrand Aviation Services Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$7,301,556	2.6%	Rank history: #27 in FY2022, #17 in FY2023, #7 in FY2024 and #45 in FY2025; down 6 since FY2020.
8	Marotta Controls Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$6,914,241	2.5%	Rank history: #3 in FY2022, #1 in FY2023, #4 in FY2024 and #5 in FY2025; up 1 since FY2020.
9	Nibco Inc. 2 awardees, including Milwaukee Valve Company, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$6,556,190	2.4%	Rank history: #6 in FY2022, #5 in FY2023, #35 in FY2024 and not on the FY2025 list; up 7 since FY2020.
10	Transdigm Group Incorporated 9 awardees, including Pneudraulics, Inc., Aerocontrolex Group, Inc. and Tactair Fluid Controls Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$5,216,614	1.9%	Rank history: #40 in FY2022, #44 in FY2023 and not on the FY2024–FY2025 lists; up 14 since FY2020.
11	Jamaica Bearings Co., Inc. 2 awardees Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$4,801,603	1.7%	Rank history: #18 in FY2022, #11 in FY2023, #10 in FY2024 and #11 in FY2025; down 6 since FY2020.
12	Parker-Hannifin Corporation 2 awardees Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$4,562,646	1.7%	Rank history: #15 in FY2022, #15 in FY2023, #42 in FY2024 and not on the FY2025 list; up 3 since FY2020.
13	JA Moody LLC 2 awardees, including ESI Acquisition Corp Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$4,226,086	1.5%	Rank history: #21 in FY2022, #71 in FY2023, #16 in FY2024 and #18 in FY2025; down 3 since FY2020.
14	Northrop Grumman Corporation 7 awardees, including Northrop Grumman Systems Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$4,081,187	1.5%	Rank history: #20 in FY2022, #32 in FY2023, #45 in FY2024 and #3 in FY2025; up 36 since FY2020.
15	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$3,789,948	1.4%	Rank history: #13 in FY2022, #14 in FY2023, #19 in FY2024 and #15 in FY2025; down 2 since FY2020.
16	Dante Valve Company Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$3,757,736	1.4%	Rank history: #19 in FY2022, #9 in FY2023, #6 in FY2024 and #14 in FY2025; up 4 since FY2020.
17	Megabite Electronics, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$3,700,992	1.3%	Rank history: #34 in FY2022, #64 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
18	ECI Defense Group, Inc. 2 awardees Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$3,456,871	1.3%	Rank history: #29 in FY2022, #7 in FY2023, #17 in FY2024 and #9 in FY2025; up 27 since FY2020.
19	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$3,380,190	1.2%	Rank history: #16 in FY2022, #29 in FY2023, #37 in FY2024 and #27 in FY2025; down 11 since FY2020.
20	Honeywell International Inc. 6 awardees Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$3,361,860	1.2%	Rank history: #10 in FY2022, #22 in FY2023, #22 in FY2024 and #19 in FY2025; down 14 since FY2020.
21	Emerson Electric Co 2 awardees, including Emerson Automation Solutions Final Control US LP Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$3,307,845	1.2%	Rank history: #12 in FY2022, #25 in FY2023, #91 in FY2024 and not on the FY2025 list; up 1 since FY2020.
22	S I T Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$2,890,397	1.0%	Rank history: #44 in FY2022, #56 in FY2023, #30 in FY2024 and #36 in FY2025; up 10 since FY2020.
23	Fluidyne Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$2,756,933	1.0%	Rank history: #23 in FY2022, #19 in FY2023, #43 in FY2024 and #44 in FY2025; unchanged since FY2020.
24	Warren Pumps LLC 4 awardees, including Hale Hamilton (Valves) Limited, Leslie Controls, Inc. and Portland Valve LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$2,624,672	0.9%	Rank history: #22 in FY2022, #27 in FY2023 and not on the FY2024–FY2025 lists; up 14 since FY2020.
25	U.s.a. Spares Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$2,606,280	0.9%	Rank history: #9 in FY2022, #16 in FY2023, #21 in FY2024 and #29 in FY2025; up 19 since FY2020.
26	Argo Turboserve Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,524,262	0.9%	Rank history: #26 in FY2022, #23 in FY2023, #24 in FY2024 and #28 in FY2025; up 10 since FY2020.
27	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$2,422,317	0.9%	Rank history: #41 in FY2022, #40 in FY2023, #34 in FY2024 and #26 in FY2025; up 14 since FY2020.
28	Griswold Industries Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,160,986	0.8%	Rank history: #7 in FY2022, #24 in FY2023, #26 in FY2024 and #35 in FY2025; down 3 since FY2020.
29	Brighton Cromwell LLC Top agencies DLA (Defense Logistics Agency)	$2,157,963	0.8%	Rank history: #54 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
30	PCX Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,118,734	0.8%	Rank history: #75 in FY2022, not on the FY2023 list, #36 in FY2024 and #25 in FY2025; down 1 since FY2020.
31	Ruta Supplies Inc. Top agencies DLA (Defense Logistics Agency)	$2,073,054	0.7%	Rank history: #17 in FY2022, #10 in FY2023, #11 in FY2024 and #48 in FY2025; down 19 since FY2020.
32	W. & O. Supply Inc. 2 awardees, including The Hiller Companies LLC Top agencies DLA (Defense Logistics Agency)	$1,938,337	0.7%	Rank history: #32 in FY2022, #59 in FY2023 and not on the FY2024–FY2025 lists; up 25 since FY2020.
33	Derbyshire Marine Products, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,922,363	0.7%	Rank history: #25 in FY2022, #33 in FY2023, #38 in FY2024 and #38 in FY2025; down 3 since FY2020.
34	New England Specialty Components, LLC Top agencies DLA (Defense Logistics Agency)	$1,809,375	0.7%	Rank history: #30 in FY2022, #26 in FY2023, #41 in FY2024 and #60 in FY2025; up 14 since FY2020.
35	B N L Industries Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,453,888	0.5%	Rank history: #58 in FY2022, #50 in FY2023, #39 in FY2024 and #47 in FY2025; up 7 since FY2020.
36	Essex Industries Inc. 3 awardees Top agencies DLA (Defense Logistics Agency)	$1,436,354	0.5%	Rank history: #76 in FY2022, #84 in FY2023, #80 in FY2024 and not on the FY2025 list; up 39 since FY2020.
37	Woodward Governor Company 2 awardees, including Woodward HRT Inc. and Woodward, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,432,314	0.5%	Rank history: #70 in FY2022, #100 in FY2023 and not on the FY2024–FY2025 lists; up 279 since FY2020.
38	Integrated Procurement Technologies Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,383,451	0.5%	Rank history: #33 in FY2022, #20 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2020.
39	Derbyshire Machine & Tool Co Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,338,255	0.5%	Rank history: #24 in FY2022, #37 in FY2023, #29 in FY2024 and #30 in FY2025; down 4 since FY2020.
40	R P M Supply Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,317,135	0.5%	Rank history: #71 in FY2022 and not on the FY2023–FY2025 lists; up 70 since FY2020.
41	Aarcorp 2 awardees, including AAR Supply Chain, Inc. and AAR Allen Services, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,304,577	0.5%	Rank history: #74 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
42	Mavtech Usa, Incorporated Top agencies Army (Department of the Army)	$1,227,570	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
43	Avon Rubber P.L.C. Through Avon Protection Systems Incorporated Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$1,220,416	0.4%	Rank history: not on the FY2022–FY2025 lists; down 22 since FY2020.
44	Stealth Supply, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,209,855	0.4%	Rank history: not on the FY2022–FY2025 lists; up 26 since FY2020.
45	Allied Defense Industries Inc. 3 awardees, including Allied Marine Services LLC and Aero International, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,191,969	0.4%	Rank history: #64 in FY2022, #41 in FY2023, #77 in FY2024 and not on the FY2025 list; up 1 since FY2020.
46	Gentex Corporation Top agencies DLA (Defense Logistics Agency)	$1,171,267	0.4%	Rank history: #39 in FY2022, #57 in FY2023 and not on the FY2024–FY2025 lists; up 61 since FY2020.
47	Tri-State Technical Sales Corp Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$1,152,966	0.4%	Rank history: not on the FY2022–FY2025 lists; up 59 since FY2020.
48	Lockheed Martin Corporation 5 awardees, including Sikorsky Aircraft Corporation and Derco Aerospace, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,144,968	0.4%	Rank history: #60 in FY2022, #36 in FY2023, #65 in FY2024 and #41 in FY2025; down 8 since FY2020.
49	Phoenix Trading Inc. Top agencies DLA (Defense Logistics Agency)	$1,079,300	0.4%	Rank history: #63 in FY2022, #43 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2020.
50	Aero Turbine, Inc. Top agencies USAF (Department of the Air Force)	$1,035,969	0.4%	Rank history: #36 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
51	SFC Valve Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,024,207	0.4%	Rank history: #37 in FY2022, #28 in FY2023, #28 in FY2024 and #39 in FY2025; down 17 since FY2020.
52	General Nuclear Corp Top agencies Navy (Department of the Navy)	$1,022,010	0.4%	Rank history: not on the FY2022–FY2025 lists; up 66 since FY2020.
53	Wood Environment & Infrastructure Solutions Inc. Through Ethosenergy Accessories and Components, LLC Top agencies Navy (Department of the Navy)	$973,395	0.4%	Rank history: #59 in FY2022, #75 in FY2023, #99 in FY2024 and not on the FY2025 list; down 1 since FY2020.
54	Lynn Electronics LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$964,906	0.3%	Rank history: not on the FY2022–FY2025 lists; up 24 since FY2020.
55	Hydraulics International, Inc. Top agencies DLA (Defense Logistics Agency)	$959,951	0.3%	Rank history: #38 in FY2022, #98 in FY2023, #52 in FY2024 and #80 in FY2025; up 12 since FY2020.
56	Johnson Controls Security Solutions LLC Through Johnson Controls Navy Systems, LLC Top agencies DLA (Defense Logistics Agency)	$925,349	0.3%	Rank history: #49 in FY2022 and not on the FY2023–FY2025 lists; up 34 since FY2020.
57	Morpac Industries, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$883,032	0.3%	Rank history: #90 in FY2022, #53 in FY2023, #59 in FY2024 and #70 in FY2025; up 80 since FY2020.
58	VSE Corporation 2 awardees, including Wheeler Fleet Solutions, Co. Top agencies DLA (Defense Logistics Agency)	$872,844	0.3%	Rank history: #97 in FY2022, #54 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2020.
59	Flowserve Corporation 2 awardees, including Flowserve US, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$860,087	0.3%	Rank history: not on the FY2022–FY2025 lists; up 86 since FY2020.
60	Crane Co 2 awardees, including Hydro-Aire Aerospace Corp Top agencies DLA (Defense Logistics Agency)	$858,480	0.3%	Rank history: #87 in FY2022, #39 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2020.
61	BAE Systems PLC 4 awardees, including BAE Systems (Operations) Limited and BAE Systems Land & Armaments L.P. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$858,400	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
62	Military Supply Company LLC Top agencies DLA (Defense Logistics Agency)	$857,627	0.3%	Rank history: not on the FY2022–FY2025 lists; up 190 since FY2020.
63	Tork Systems Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$849,332	0.3%	Rank history: #43 in FY2022, #30 in FY2023, #62 in FY2024 and #64 in FY2025; up 196 since FY2020.
64	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$781,367	0.3%	Rank history: #98 in FY2022, #69 in FY2023, #68 in FY2024 and #65 in FY2025; down 27 since FY2020.
65	Blue Cord Logistic Strategies Inc. Top agencies DLA (Defense Logistics Agency)	$747,308	0.3%	Rank history: not on the FY2022–FY2023 lists, #75 in FY2024 and #78 in FY2025; down 7 since FY2020.
66	Painter Tool Incorporated Top agencies Navy (Department of the Navy)	$746,383	0.3%	Rank history: not on the FY2022 list, #34 in FY2023, #44 in FY2024 and #24 in FY2025; down 1 since FY2020.
67	Allied Marine Services LLC Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$742,952	0.3%	Rank history: #65 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
68	Thomas Instrument, Incorporated Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$739,319	0.3%	Rank history: #84 in FY2022, #85 in FY2023, #72 in FY2024 and #55 in FY2025; down 29 since FY2020.
69	Statz Corp Top agencies DLA (Defense Logistics Agency)	$737,698	0.3%	Rank history: #82 in FY2022 and not on the FY2023–FY2025 lists; down 50 since FY2020.
70	Compressor Engineering Corp Top agencies DLA (Defense Logistics Agency)	$737,628	0.3%	Rank history: #62 in FY2022 and not on the FY2023–FY2025 lists; up 55 since FY2020.
71	Tate Andale, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$732,701	0.3%	Rank history: #61 in FY2022, #74 in FY2023, #100 in FY2024 and #66 in FY2025; up 16 since FY2020.
72	F C Industries Inc Through A F C Tool Co., Inc. Top agencies Navy (Department of the Navy)	$724,332	0.3%	Rank history: not on the FY2022–FY2025 lists; up 117 since FY2020.
73	Mellinger Engineering, Incorporated Top agencies Navy (Department of the Navy)	$712,752	0.3%	Rank history: #28 in FY2022, #55 in FY2023, #40 in FY2024 and #75 in FY2025; up 7 since FY2020.
74	The Boeing Company 6 awardees, including Boeing Distribution Services, Inc., Boeing Distribution, Inc. and Boeing Distribution Services X, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$694,762	0.3%	Rank history: not on the FY2022–FY2023 lists, #84 in FY2024 and #96 in FY2025; down 48 since FY2020.
75	Bahr Machine Co Top agencies DLA (Defense Logistics Agency)	$688,443	0.2%	Rank history: #53 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
76	Oceaneering International Inc. Top agencies Navy (Department of the Navy)	$663,123	0.2%	Rank history: #47 in FY2022 and not on the FY2023–FY2025 lists; up 22 since FY2020.
77	Noresco LLC 2 awardees, including Kidde Technologies, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$654,650	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
78	Simtech, Inc. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$640,968	0.2%	Rank history: not on the FY2022 list, #63 in FY2023, not on the FY2024 list and #85 in FY2025; up 185 since FY2020.
79	Control Components Inc. Top agencies Navy (Department of the Navy)	$622,500	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
80	III Williams LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$592,739	0.2%	Rank history: not on the FY2022–FY2025 lists; up 31 since FY2020.
81	Curtiss-Wright Corporation 5 awardees, including Curtiss-Wright Flow Control Corporation and Curtiss-Wright Electro-Mechanical Corporation Top agencies Navy (Department of the Navy)	$591,131	0.2%	Rank history: not on the FY2022 list, #80 in FY2023 and not on the FY2024–FY2025 lists; down 18 since FY2020.
82	Adirondack Electronics Inc. Top agencies Navy (Department of the Navy)	$571,631	0.2%	Rank history: not on the FY2022–FY2025 lists; up 33 since FY2020.
83	TNL Sales LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$560,035	0.2%	Rank history: not on the FY2022 list, #68 in FY2023, #79 in FY2024 and #76 in FY2025; up 19 since FY2020.
84	Bollinger Shipyards Inc Through Chand, L.L.C. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$543,707	0.2%	Rank history: #50 in FY2022, #62 in FY2023 and not on the FY2024–FY2025 lists; up 52 since FY2020.
85	T and T Products LLC Top agencies DLA (Defense Logistics Agency)	$540,858	0.2%	Rank history: not on the FY2022–FY2025 lists; up 20 since FY2020.
86	Dutch Valley Supply Co. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$527,473	0.2%	Rank history: not on the FY2022 list, #88 in FY2023 and not on the FY2024–FY2025 lists; up 36 since FY2020.
87	Societe Holding Velan Ltee Through Velan Valve Corp. Top agencies Navy (Department of the Navy)	$525,009	0.2%	Rank history: #79 in FY2022 and not on the FY2023–FY2025 lists; up 14 since FY2020.
88	Eaton Corporation 5 awardees, including Eaton Aerospace LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$524,374	0.2%	Rank history: #52 in FY2022, #21 in FY2023, #27 in FY2024 and #33 in FY2025; down 39 since FY2020.
89	SAFRAN 5 awardees, including Safran Electrical Components Canada Inc., Safran Landing Systems Wheel & Brake Services LLC and Safran Aerosystems Services Americas LLC Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$521,267	0.2%	Rank history: #88 in FY2022 and not on the FY2023–FY2025 lists; up 28 since FY2020.
90	Aero-Dyne Supply Co., Inc. Top agencies DLA (Defense Logistics Agency)	$515,356	0.2%	Rank history: not on the FY2022 list, #99 in FY2023 and not on the FY2024–FY2025 lists; up 42 since FY2020.
91	Par Defense Industries, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$514,669	0.2%	Rank history: not on the FY2022–FY2024 lists and #71 in FY2025; up 63 since FY2020.
92	Jag Components, LLC Top agencies DLA (Defense Logistics Agency)	$512,771	0.2%	Rank history: not on the FY2022–FY2023 lists, #94 in FY2024 and not on the FY2025 list; up 1 since FY2020.
93	Echelon Supply and Service, Inc. Top agencies DLA (Defense Logistics Agency)	$507,785	0.2%	Rank history: #46 in FY2022, #47 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2020.
94	Sarco Inc. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$506,358	0.2%	Rank history: #81 in FY2022, #91 in FY2023, #90 in FY2024 and not on the FY2025 list; unchanged since FY2020.
95	Ballco Manufacturing Company, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$500,980	0.2%	Rank history: not on the FY2022–FY2023 lists, #89 in FY2024 and #72 in FY2025; up 61 since FY2020.
96	Tiberian Development Group LLC Top agencies DLA (Defense Logistics Agency)	$489,092	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
97	Chase Supply, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$487,047	0.2%	Rank history: #69 in FY2022, #66 in FY2023, #63 in FY2024 and #87 in FY2025; up 23 since FY2020.
98	Scott Industrial Systems, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$468,494	0.2%	Rank history: #78 in FY2022, #46 in FY2023, #55 in FY2024 and #52 in FY2025; down 7 since FY2020.
99	Advanced Products Services Inc. Top agencies DLA (Defense Logistics Agency)	$464,051	0.2%	Rank history: not on the FY2022 list, #61 in FY2023 and not on the FY2024–FY2025 lists; up 48 since FY2020.
100	Mid-State Aerospace Inc. Top agencies DLA (Defense Logistics Agency)	$460,512	0.2%	Rank history: not on the FY2022–FY2025 lists; up 114 since FY2020.

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100 of 854 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 $276 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 4820 contractors in FY2021?

1. Esco Technologies Inc. ($13.8M), 2. Hunt Valve Company, Inc. ($13.7M), 3. Kampi Components Co Inc. ($9.65M), 4. Transaero, Inc. ($9.17M), 5. Science Applications International Corporation ($9.11M), 6. Sargent Aerospace & Defense LLC ($8.5M), 7. RTX Corporation ($7.3M), 8. Marotta Controls Inc. ($6.91M), 9. Nibco Inc. ($6.56M), 10. Transdigm Group Incorporated ($5.22M).

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