Top 100 Contractors in PSC 4320: Power and Hand Pumps, FY2021

Name: Top 100 Contractors in PSC 4320: Power and Hand Pumps, FY2021
Creator: GovTribe

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

The top 10 won 37% of FY2021 PSC 4320 contract dollars

Contract obligations: $140,688,587 Net of deobligations, by contracts coded PSC 4320
Contractors: 623 Parent companies with an obligation
Largest contractor: Warren Pumps LLC $10.9 million, 7.3% 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	Warren Pumps LLC Through Circor Naval Solutions LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$10,868,092	7.3%	Rank history: #2 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
2	Curtiss-Wright Corporation 4 awardees, including Curtiss-Wright Electro-Mechanical Corporation Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$9,336,219	6.2%	Rank history: #3 in FY2022, #3 in FY2023, #45 in FY2024 and not on the FY2025 list; up 3 since FY2020.
3	Carver Pump Company Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$5,854,463	3.9%	Rank history: #4 in FY2022, #5 in FY2023, #4 in FY2024 and #3 in FY2025; up 5 since FY2020.
4	Parker-Hannifin Corporation 3 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$5,852,491	3.9%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and not on the FY2025 list; unchanged since FY2020.
5	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$4,401,892	2.9%	Rank history: #28 in FY2022, #24 in FY2023, #7 in FY2024 and #20 in FY2025; up 6 since FY2020.
6	Science Applications International Corporation 3 awardees, including Asrc Federal Facilities Logistics, LLC Top agencies DLA (Defense Logistics Agency)	$4,337,544	2.9%	Rank history: #9 in FY2022, #11 in FY2023, #44 in FY2024 and not on the FY2025 list; up 3 since FY2020.
7	Ampco-Pittsburgh Corporation Through Air & Liquid Systems Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$3,800,290	2.5%	Rank history: #39 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
8	RTX Corporation 8 awardees, including Hamilton Sundstrand Corporation, Raytheon Company and Goodrich Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$3,733,779	2.5%	Rank history: #16 in FY2022, #2 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
9	Crane Co 3 awardees, including Crane Pumps & Systems PFT Corp and Hydro-Aire Aerospace Corp. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) Army (Department of the Army)	$3,657,602	2.4%	Rank history: #10 in FY2022, #9 in FY2023, #38 in FY2024 and not on the FY2025 list; up 1 since FY2020.
10	Eaton Corporation 5 awardees, including Eaton Aerospace, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$3,432,179	2.3%	Rank history: #11 in FY2022, #13 in FY2023, #26 in FY2024 and not on the FY2025 list; up 8 since FY2020.
11	Jamaica Bearings Co., Inc. 2 awardees Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$2,847,415	1.9%	Rank history: #13 in FY2022, #7 in FY2023, #9 in FY2024 and #9 in FY2025; down 8 since FY2020.
12	Dover Corporation Through Dover Pumps & Process Solutions Segment Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$2,793,905	1.9%	Rank history: #18 in FY2022, #10 in FY2023, #94 in FY2024 and not on the FY2025 list; up 5 since FY2020.
13	W S Darley & Co 2 awardees, including WS Darley & Co Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$2,352,271	1.6%	Rank history: #12 in FY2022, #21 in FY2023, #6 in FY2024 and #28 in FY2025; up 9 since FY2020.
14	All-Safe Inc. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$2,249,536	1.5%	Rank history: #20 in FY2022, #18 in FY2023, #13 in FY2024 and #12 in FY2025; up 1 since FY2020.
15	Thomas Instrument, Incorporated Top agencies DLA (Defense Logistics Agency)	$2,174,669	1.5%	Rank history: not on the FY2022–FY2024 lists and #57 in FY2025; new, not ranked in FY2020.
16	Graham Corp 2 awardees, including Barber-Nichols, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,715,068	1.1%	Rank history: #44 in FY2022, #20 in FY2023 and not on the FY2024–FY2025 lists; up 266 since FY2020.
17	R P M Supply Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,672,333	1.1%	Rank history: #5 in FY2022, #8 in FY2023, #10 in FY2024 and #11 in FY2025; down 3 since FY2020.
18	Waterax Corporation Top agencies DLA (Defense Logistics Agency) USDA (Department of Agriculture) DOI (Department of the Interior)	$1,639,019	1.1%	Rank history: #22 in FY2022, not on the FY2023–FY2024 lists and #74 in FY2025; up 137 since FY2020.
19	Phoenix Trading Inc. Top agencies DLA (Defense Logistics Agency)	$1,610,812	1.1%	Rank history: #35 in FY2022, #32 in FY2023, #18 in FY2024 and #17 in FY2025; up 13 since FY2020.
20	Chant Engineering Co Inc. Top agencies Navy (Department of the Navy)	$1,599,139	1.1%	Rank history: not on the FY2022–FY2024 lists and #70 in FY2025; new, not ranked in FY2020.
21	Gardner Denver Nash LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,555,711	1.0%	Rank history: #8 in FY2022, #15 in FY2023 and not on the FY2024–FY2025 lists; up 155 since FY2020.
22	Transdigm Group Incorporated 3 awardees, including Aerocontrolex Group, Inc. and Tactair Fluid Controls Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,380,049	0.9%	Rank history: #14 in FY2022, #30 in FY2023, #68 in FY2024 and not on the FY2025 list; up 143 since FY2020.
23	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) Navy (Department of the Navy)	$1,261,199	0.8%	Rank history: #27 in FY2022, #34 in FY2023, #20 in FY2024 and #15 in FY2025; down 16 since FY2020.
24	Triad Technologies LLC Top agencies DLA (Defense Logistics Agency)	$1,225,698	0.8%	Rank history: not on the FY2022 list, #74 in FY2023, #81 in FY2024 and not on the FY2025 list; up 15 since FY2020.
25	Integrated Procurement Technologies Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,192,394	0.8%	Rank history: #23 in FY2022, #22 in FY2023, #28 in FY2024 and #38 in FY2025; up 24 since FY2020.
26	Dreamfind, Inc. Top agencies DLA (Defense Logistics Agency)	$1,191,965	0.8%	Rank history: #30 in FY2022, #25 in FY2023, #19 in FY2024 and #34 in FY2025; up 5 since FY2020.
27	Aqua-Chem, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$1,183,171	0.8%	Rank history: #24 in FY2022, not on the FY2023 list, #15 in FY2024 and #91 in FY2025; up 24 since FY2020.
28	Colfax Corporation Through IMO Industries Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,141,560	0.8%	Rank history: #25 in FY2022, #4 in FY2023, #3 in FY2024 and not on the FY2025 list; up 44 since FY2020.
29	Meggitt PLC 2 awardees, including Meggitt Defense Systems, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,130,507	0.8%	Rank history: #79 in FY2022 and not on the FY2023–FY2025 lists; up 21 since FY2020.
30	Fairbanks Morse LLC 2 awardees, including Breco International, LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$1,104,061	0.7%	Rank history: #51 in FY2022, #60 in FY2023 and not on the FY2024–FY2025 lists; up 149 since FY2020.
31	Colonna's Shipyard West, LLC Top agencies Navy (Department of the Navy)	$1,100,218	0.7%	Rank history: #34 in FY2022, #59 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
32	Phoenix Pumps Inc. Top agencies DOI (Department of the Interior) DOJ (Department of Justice)	$1,020,304	0.7%	Rank history: #19 in FY2022, #56 in FY2023, not on the FY2024 list and #92 in FY2025; up 12 since FY2020.
33	Highland Engineering, Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$974,488	0.7%	Rank history: not on the FY2022–FY2025 lists; up 79 since FY2020.
34	Oshkosh Corp 2 awardees, including Oshkosh Defense LLC and JLG Industries, Inc. Top agencies DLA (Defense Logistics Agency)	$951,961	0.6%	Rank history: #89 in FY2022, #46 in FY2023 and not on the FY2024–FY2025 lists; up 24 since FY2020.
35	Acme Products & Engineering Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$948,947	0.6%	Rank history: #46 in FY2022, #93 in FY2023, #37 in FY2024 and #14 in FY2025; down 15 since FY2020.
36	Bronze Oak, LLC Top agencies HHS (Department of Health and Human Services)	$916,371	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
37	Horstman Inc. Top agencies DLA (Defense Logistics Agency)	$871,520	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
38	Sims Pump Valve Co, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$822,879	0.5%	Rank history: #71 in FY2022, #43 in FY2023, #46 in FY2024 and #45 in FY2025; up 22 since FY2020.
39	Heico Aerospace Corporat 3 awardees, including Rocky Mountain Hydrostatics, LLC, Seal Dynamics LLC and Blue Aerospace LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$784,346	0.5%	Rank history: #31 in FY2022, #29 in FY2023, not on the FY2024 list and #72 in FY2025; up 70 since FY2020.
40	Statz Corp Top agencies DLA (Defense Logistics Agency)	$784,069	0.5%	Rank history: #52 in FY2022 and not on the FY2023–FY2025 lists; up 26 since FY2020.
41	Dutch Valley Supply Co. Top agencies DLA (Defense Logistics Agency)	$765,244	0.5%	Rank history: #55 in FY2022, #51 in FY2023, #34 in FY2024 and #50 in FY2025; up 44 since FY2020.
42	Aero Precision Industries LLC 2 awardees Top agencies USAF (Department of the Air Force)	$744,756	0.5%	Rank history: #66 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
43	Fluid Handling Resources LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$700,392	0.5%	Rank history: not on the FY2022–FY2023 lists, #41 in FY2024 and #65 in FY2025; up 99 since FY2020.
44	Greenwich AeroGroup Inc. Through Aero Precision Industries LLC Top agencies USAF (Department of the Air Force)	$638,925	0.4%	Rank history: not on the FY2022–FY2025 lists; up 52 since FY2020.
45	General Electric Company 2 awardees Top agencies Navy (Department of the Navy)	$634,000	0.4%	Rank history: not on the FY2022–FY2025 lists; up 30 since FY2020.
46	Smiths Group PLC Through John Crane, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$621,634	0.4%	Rank history: #50 in FY2022, #48 in FY2023, #88 in FY2024 and not on the FY2025 list; up 19 since FY2020.
47	Rolls-Royce Military Aero Engines Ltd 3 awardees, including Rolls-Royce Marine North America Inc., Rolls-Royce Corporation and Rolls-Royce Solutions America Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$618,445	0.4%	Rank history: #63 in FY2022 and not on the FY2023–FY2025 lists; down 22 since FY2020.
48	Federal Resources Supply Company 2 awardees, including Wright Tool Company, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$607,397	0.4%	Rank history: not on the FY2022–FY2025 lists; up 51 since FY2020.
49	PCX Inc. Top agencies DLA (Defense Logistics Agency)	$606,995	0.4%	Rank history: #85 in FY2022, not on the FY2023–FY2024 lists and #33 in FY2025; up 32 since FY2020.
50	Echelon Supply and Service, Inc. Top agencies DLA (Defense Logistics Agency)	$562,901	0.4%	Rank history: #57 in FY2022, #42 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2020.
51	Global Logistics Strategies Inc. Top agencies DLA (Defense Logistics Agency)	$562,239	0.4%	Rank history: #76 in FY2022, #71 in FY2023 and not on the FY2024–FY2025 lists; up 46 since FY2020.
52	Derbyshire Machine & Tool Co Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$553,842	0.4%	Rank history: not on the FY2022 list, #90 in FY2023, #55 in FY2024 and not on the FY2025 list; up 115 since FY2020.
53	Linmarr Associates, Inc. Top agencies DLA (Defense Logistics Agency)	$545,434	0.4%	Rank history: #69 in FY2022, not on the FY2023 list, #54 in FY2024 and #55 in FY2025; down 12 since FY2020.
54	Allied Defense Industries Inc. 4 awardees, including Allied Marine Services LLC and Aero International, LLC Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$537,079	0.4%	Rank history: #60 in FY2022, #35 in FY2023 and not on the FY2024–FY2025 lists; down 19 since FY2020.
55	ECI Defense Group, Inc. Top agencies DLA (Defense Logistics Agency)	$525,640	0.4%	Rank history: #6 in FY2022, #6 in FY2023, #8 in FY2024 and #5 in FY2025; up 6 since FY2020.
56	Bromine Systems Inc. Top agencies DLA (Defense Logistics Agency)	$516,354	0.3%	Rank history: not on the FY2022–FY2025 lists; up 35 since FY2020.
57	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$511,209	0.3%	Rank history: #42 in FY2022, #27 in FY2023, #17 in FY2024 and #23 in FY2025; up 11 since FY2020.
58	Sulzer AG 2 awardees, including Sulzer Pump Services US Inc. and JWC Environmental Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$503,288	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
59	Hydraulics International, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$495,832	0.3%	Rank history: #47 in FY2022, #75 in FY2023, #36 in FY2024 and #53 in FY2025; down 25 since FY2020.
60	Ray Blackman Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$490,021	0.3%	Rank history: #84 in FY2022, #61 in FY2023, #74 in FY2024 and #71 in FY2025; up 4 since FY2020.
61	S I T Corporation Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$475,349	0.3%	Rank history: #40 in FY2022, #39 in FY2023, #24 in FY2024 and #21 in FY2025; up 8 since FY2020.
62	Caterpillar Inc. 2 awardees, including Carter Machinery Company, Incorporated Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) Navy (Department of the Navy)	$470,252	0.3%	Rank history: not on the FY2022–FY2025 lists; up 17 since FY2020.
63	Sarco Inc. Top agencies DLA (Defense Logistics Agency)	$467,395	0.3%	Rank history: #92 in FY2022, #86 in FY2023, #73 in FY2024 and #93 in FY2025; up 98 since FY2020.
64	Gas Turbine Engines Inc. Top agencies USAF (Department of the Air Force)	$459,540	0.3%	Rank history: not on the FY2022–FY2025 lists; up 52 since FY2020.
65	Pankl Turbosystems GMBH Top agencies Army (Department of the Army)	$457,600	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
66	Allied Marine Services LLC 2 awardees, including Environmental Systems LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$447,100	0.3%	Rank history: #56 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
67	MDM Mac Enterprises Inc. Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$439,375	0.3%	Rank history: not on the FY2022–FY2025 lists; up 153 since FY2020.
68	Supplycore LLC Top agencies DLA (Defense Logistics Agency)	$416,060	0.3%	Rank history: not on the FY2022–FY2024 lists and #32 in FY2025; down 6 since FY2020.
69	Metadure Parts & Sales, Inc. Top agencies DLA (Defense Logistics Agency)	$393,163	0.3%	Rank history: #78 in FY2022, #85 in FY2023, #61 in FY2024 and not on the FY2025 list; up 197 since FY2020.
70	Aktio Corporation Top agencies Navy (Department of the Navy)	$380,000	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
71	Mcnally Industries LLC Top agencies Navy (Department of the Navy)	$379,509	0.3%	Rank history: #59 in FY2022, #28 in FY2023, #23 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
72	Specialty Seals & Accessories, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$356,994	0.2%	Rank history: #82 in FY2022 and not on the FY2023–FY2025 lists; down 18 since FY2020.
73	Lynn Electronics LLC Top agencies DLA (Defense Logistics Agency)	$354,954	0.2%	Rank history: not on the FY2022–FY2025 lists; up 135 since FY2020.
74	Service & Sales Inc. Top agencies DLA (Defense Logistics Agency)	$353,223	0.2%	Rank history: not on the FY2022–FY2025 lists; up 70 since FY2020.
75	Bestek Industries Inc. Top agencies DLA (Defense Logistics Agency)	$345,391	0.2%	Rank history: #73 in FY2022, not on the FY2023 list, #78 in FY2024 and #81 in FY2025; up 11 since FY2020.
76	Scott Industrial Systems, Inc. Top agencies DLA (Defense Logistics Agency)	$339,682	0.2%	Rank history: #95 in FY2022, #54 in FY2023, #65 in FY2024 and not on the FY2025 list; up 88 since FY2020.
77	Airtronics, LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$335,589	0.2%	Rank history: #72 in FY2022, #31 in FY2023, #25 in FY2024 and #43 in FY2025; down 24 since FY2020.
78	Ohs Inc. Top agencies DLA (Defense Logistics Agency)	$326,680	0.2%	Rank history: not on the FY2022–FY2025 lists; up 26 since FY2020.
79	Piedmont Pump and Products, Inc. Top agencies DHS (Department of Homeland Security)	$326,647	0.2%	Rank history: not on the FY2022–FY2025 lists; up 93 since FY2020.
80	Lidgerwood Manufacturing Company Through M.t. Davidson Company Top agencies Navy (Department of the Navy)	$305,935	0.2%	Rank history: #99 in FY2022 and not on the FY2023–FY2025 lists; up 27 since FY2020.
81	Ruta Supplies Inc. Top agencies DLA (Defense Logistics Agency)	$299,447	0.2%	Rank history: #48 in FY2022, not on the FY2023–FY2024 lists and #98 in FY2025; down 24 since FY2020.
82	Coordinated Defense Supply Systems, Inc. Top agencies DLA (Defense Logistics Agency)	$293,529	0.2%	Rank history: not on the FY2022–FY2025 lists; down 36 since FY2020.
83	Johnson Controls Security Solutions LLC Through Johnson Controls Navy Systems, LLC Top agencies DLA (Defense Logistics Agency)	$292,581	0.2%	Rank history: #49 in FY2022, #82 in FY2023 and not on the FY2024–FY2025 lists; down 53 since FY2020.
84	Brighton Cromwell LLC Top agencies DLA (Defense Logistics Agency)	$289,040	0.2%	Rank history: not on the FY2022–FY2025 lists; up 10 since FY2020.
85	Reiner Pump Systems Inc. Top agencies Army (Department of the Army)	$282,500	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
86	Geiger Pump and Equipment Company, LLC 2 awardees, including Eastern Industrial Products, Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$281,753	0.2%	Rank history: #98 in FY2022, #69 in FY2023, #96 in FY2024 and not on the FY2025 list; up 25 since FY2020.
87	Adirondack Electronics Inc. Top agencies Navy (Department of the Navy)	$279,246	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
88	Gigli Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$274,645	0.2%	Rank history: not on the FY2022–FY2025 lists; up 12 since FY2020.
89	Megator Corp Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security) Navy (Department of the Navy)	$270,873	0.2%	Rank history: not on the FY2022–FY2023 lists, #79 in FY2024 and #49 in FY2025; up 140 since FY2020.
90	Ohio Machinery Co Top agencies DLA (Defense Logistics Agency)	$269,827	0.2%	Rank history: #53 in FY2022, #45 in FY2023 and not on the FY2024–FY2025 lists; up 38 since FY2020.
91	Honeywell International Inc. 4 awardees Top agencies DLA (Defense Logistics Agency)	$269,606	0.2%	Rank history: #100 in FY2022, not on the FY2023 list, #72 in FY2024 and #59 in FY2025; down 1 since FY2020.
92	Atlantic Industrial Technologies, Inc. Top agencies Navy (Department of the Navy)	$269,050	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
93	B & H International LLC Top agencies DOI (Department of the Interior) Navy (Department of the Navy)	$265,425	0.2%	Rank history: not on the FY2022–FY2025 lists; up 132 since FY2020.
94	BBA Aviation PLC Through Ontic Engineering & Manufacturing, Inc. Top agencies DLA (Defense Logistics Agency)	$264,761	0.2%	Rank history: #65 in FY2022, #87 in FY2023 and not on the FY2024–FY2025 lists; up 47 since FY2020.
95	Janels Industries Inc. Top agencies DLA (Defense Logistics Agency)	$249,831	0.2%	Rank history: #81 in FY2022, #55 in FY2023 and not on the FY2024–FY2025 lists; up 384 since FY2020.
96	Wanner Engineering Inc. Top agencies Navy (Department of the Navy)	$244,249	0.2%	Rank history: not on the FY2022 list, #77 in FY2023, #48 in FY2024 and not on the FY2025 list; down 68 since FY2020.
97	Eddy Pump Corporation Top agencies Navy (Department of the Navy)	$236,459	0.2%	Rank history: #43 in FY2022, #23 in FY2023, #52 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
98	Johnson & Towers Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$231,899	0.2%	Rank history: not on the FY2022 list, #73 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
99	Painter Tool Incorporated Top agencies Navy (Department of the Navy)	$230,112	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	Dover Pumps & Process Solutions Segment Inc. Top agencies Navy (Department of the Navy)	$228,006	0.2%	Rank history: not on the FY2022–FY2023 lists, #35 in FY2024 and #24 in FY2025; new, not ranked in FY2020.

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100 of 623 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 $150 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 4320 contractors in FY2021?

1. Warren Pumps LLC ($10.9M), 2. Curtiss-Wright Corporation ($9.34M), 3. Carver Pump Company ($5.85M), 4. Parker-Hannifin Corporation ($5.85M), 5. Pioneer Industries, LLC ($4.4M), 6. Science Applications International Corporation ($4.34M), 7. Ampco-Pittsburgh Corporation ($3.8M), 8. RTX Corporation ($3.73M), 9. Crane Co ($3.66M), 10. Eaton Corporation ($3.43M).

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