Top 100 Contractors in PSC 4330: Centrifugals, Separators, and Pressure and Vacuum Filters, FY2021

Name: Top 100 Contractors in PSC 4330: Centrifugals, Separators, and Pressure and Vacuum Filters, FY2021
Creator: GovTribe

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

The top 10 won 39% of FY2021 PSC 4330 contract dollars

Contract obligations: $43,116,495 Net of deobligations, by contracts coded PSC 4330
Contractors: 453 Parent companies with an obligation
Largest contractor: Filtration Group Corporation $2.81 million, 6.2% 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	Filtration Group Corporation Through Facet (Oklahoma) LLC Top agencies DLA (Defense Logistics Agency)	$2,810,396	6.2%	Rank history: #1 in FY2022, #3 in FY2023, #9 in FY2024 and not on the FY2025 list; up 2 since FY2020.
2	Danaher Corporation Through Pall Aeropower Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,155,670	4.8%	Rank history: #6 in FY2022, #5 in FY2023, #11 in FY2024 and #21 in FY2025; down 1 since FY2020.
3	Alfa Laval Inc. 3 awardees Top agencies Navy (Department of the Navy)	$2,144,356	4.8%	Rank history: #2 in FY2022, #1 in FY2023, #5 in FY2024 and #1 in FY2025; down 1 since FY2020.
4	Integrated Procurement Technologies 2 awardees Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security) Navy (Department of the Navy)	$1,904,884	4.2%	Rank history: #3 in FY2022, #7 in FY2023, #4 in FY2024 and #6 in FY2025; unchanged since FY2020.
5	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,783,862	4.0%	Rank history: #4 in FY2022, #4 in FY2023, #8 in FY2024 and #8 in FY2025; up 2 since FY2020.
6	The Boeing Company 4 awardees, including Boeing Distribution Services X, Inc., Boeing Distribution Services, Inc. and Boeing Distribution, Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) DHS (Department of Homeland Security)	$1,581,961	3.5%	Rank history: #14 in FY2022, #12 in FY2023, #10 in FY2024 and #40 in FY2025; up 7 since FY2020.
7	RTX Corporation 3 awardees, including Hamilton Sundstrand Corporation and Collins Engine Nozzles, Inc. Top agencies DLA (Defense Logistics Agency)	$1,534,831	3.4%	Rank history: #26 in FY2022, #14 in FY2023 and not on the FY2024–FY2025 lists; up 24 since FY2020.
8	Statz Corp Top agencies DLA (Defense Logistics Agency)	$1,453,776	3.2%	Rank history: #8 in FY2022, #9 in FY2023, #3 in FY2024 and #53 in FY2025; up 1 since FY2020.
9	Supplycore LLC Top agencies DLA (Defense Logistics Agency)	$1,139,752	2.5%	Rank history: #15 in FY2022, #24 in FY2023, #18 in FY2024 and #19 in FY2025; down 1 since FY2020.
10	Donaldson Company, Inc. 3 awardees, including Hy-Pro Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,046,807	2.3%	Rank history: #16 in FY2022, #72 in FY2023, #41 in FY2024 and not on the FY2025 list; up 22 since FY2020.
11	Esco Technologies Inc. Through Vacco Industries Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$896,835	2.0%	Rank history: #46 in FY2022, #35 in FY2023, #7 in FY2024 and #3 in FY2025; up 23 since FY2020.
12	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$744,363	1.7%	Rank history: #13 in FY2022, #13 in FY2023, #22 in FY2024 and #37 in FY2025; up 5 since FY2020.
13	Marotta Controls Inc. Top agencies DLA (Defense Logistics Agency)	$696,220	1.5%	Rank history: #21 in FY2022, #43 in FY2023, #90 in FY2024 and #10 in FY2025; up 20 since FY2020.
14	Sargent Aerospace & Defense LLC Top agencies DLA (Defense Logistics Agency)	$683,088	1.5%	Rank history: #24 in FY2022, #16 in FY2023, #23 in FY2024 and not on the FY2025 list; up 6 since FY2020.
15	PCX Inc. Top agencies DLA (Defense Logistics Agency)	$680,794	1.5%	Rank history: #19 in FY2022, #8 in FY2023, #6 in FY2024 and #29 in FY2025; up 21 since FY2020.
16	Parker-Hannifin Corporation 3 awardees Top agencies DLA (Defense Logistics Agency)	$612,291	1.4%	Rank history: #12 in FY2022, #18 in FY2023, #16 in FY2024 and not on the FY2025 list; down 1 since FY2020.
17	FBC Enterprises LLC Top agencies DLA (Defense Logistics Agency)	$529,221	1.2%	Rank history: #10 in FY2022, #6 in FY2023, #1 in FY2024 and #17 in FY2025; up 1 since FY2020.
18	General Electric Company 4 awardees Top agencies DLA (Defense Logistics Agency)	$517,160	1.1%	Rank history: #41 in FY2022, #30 in FY2023, #15 in FY2024 and #30 in FY2025; up 5 since FY2020.
19	Brighton Cromwell LLC Top agencies DLA (Defense Logistics Agency)	$510,440	1.1%	Rank history: #28 in FY2022 and not on the FY2023–FY2025 lists; down 14 since FY2020.
20	Gigli Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$500,046	1.1%	Rank history: #64 in FY2022, #15 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
21	AGM Container Controls Inc. Top agencies DLA (Defense Logistics Agency)	$477,636	1.1%	Rank history: #42 in FY2022, #27 in FY2023, #42 in FY2024 and #34 in FY2025; up 1 since FY2020.
22	Sarco Inc. Top agencies DLA (Defense Logistics Agency)	$471,087	1.0%	Rank history: #11 in FY2022, #19 in FY2023, #19 in FY2024 and #15 in FY2025; down 1 since FY2020.
23	Adrick Marine Group, Inc. Top agencies DHS (Department of Homeland Security)	$427,666	0.9%	Rank history: #27 in FY2022 and not on the FY2023–FY2025 lists; up 37 since FY2020.
24	MCO Solutions, Inc. Top agencies DLA (Defense Logistics Agency)	$419,392	0.9%	Rank history: #54 in FY2022, #75 in FY2023, #40 in FY2024 and #55 in FY2025; up 45 since FY2020.
25	U.s. Hardware Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$418,098	0.9%	Rank history: #33 in FY2022, #65 in FY2023, #21 in FY2024 and not on the FY2025 list; up 52 since FY2020.
26	Zemarc Corporation Top agencies DLA (Defense Logistics Agency)	$417,300	0.9%	Rank history: #37 in FY2022, not on the FY2023 list, #72 in FY2024 and not on the FY2025 list; down 2 since FY2020.
27	Fluid Conditioning Products, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$377,422	0.8%	Rank history: #25 in FY2022, #21 in FY2023, #27 in FY2024 and #42 in FY2025; up 20 since FY2020.
28	Imeco Inc. Through Aircraft Appliances and Equipment Limited Top agencies Navy (Department of the Navy)	$364,770	0.8%	Rank history: not on the FY2022–FY2025 lists; up 86 since FY2020.
29	Eagle Equipment Corporation Top agencies DLA (Defense Logistics Agency)	$357,589	0.8%	Rank history: #20 in FY2022, #17 in FY2023, #14 in FY2024 and #9 in FY2025; up 21 since FY2020.
30	Megabite Electronics, Inc. Top agencies DLA (Defense Logistics Agency)	$336,535	0.7%	Rank history: #70 in FY2022, #55 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
31	Rev-Cap Company, Inc. Top agencies DLA (Defense Logistics Agency)	$325,339	0.7%	Rank history: #17 in FY2022, #88 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2020.
32	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency)	$291,301	0.6%	Rank history: #35 in FY2022, #74 in FY2023, #47 in FY2024 and #50 in FY2025; up 23 since FY2020.
33	S I T Corporation Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) DHS (Department of Homeland Security)	$279,779	0.6%	Rank history: #97 in FY2022, #50 in FY2023, #30 in FY2024 and #39 in FY2025; down 7 since FY2020.
34	Applied Industrial Technologies, Inc. Top agencies DLA (Defense Logistics Agency)	$273,621	0.6%	Rank history: #31 in FY2022, #46 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
35	Compass Water Solutions, Inc. Top agencies DLA (Defense Logistics Agency)	$268,416	0.6%	Rank history: not on the FY2022–FY2025 lists; up 22 since FY2020.
36	Johnson Controls Security Solutions LLC Through Johnson Controls Navy Systems, LLC Top agencies DLA (Defense Logistics Agency)	$249,720	0.6%	Rank history: #49 in FY2022 and not on the FY2023–FY2025 lists; up 175 since FY2020.
37	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency)	$248,058	0.6%	Rank history: #9 in FY2022, #20 in FY2023, #2 in FY2024 and #5 in FY2025; up 21 since FY2020.
38	Cargotec OYJ Through Independent Rough Terrain Center LLC Top agencies DLA (Defense Logistics Agency)	$244,210	0.5%	Rank history: #50 in FY2022, #39 in FY2023 and not on the FY2024–FY2025 lists; down 10 since FY2020.
39	JSN Inc. Top agencies DLA (Defense Logistics Agency)	$238,425	0.5%	Rank history: #34 in FY2022, #28 in FY2023, #91 in FY2024 and #62 in FY2025; up 6 since FY2020.
40	Oshkosh Corp 2 awardees, including Oshkosh Defense LLC and JLG Industries, Inc. Top agencies DLA (Defense Logistics Agency)	$238,117	0.5%	Rank history: #53 in FY2022, #37 in FY2023 and not on the FY2024–FY2025 lists; up 19 since FY2020.
41	Talan Industries LLC Top agencies DLA (Defense Logistics Agency)	$234,222	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
42	Northrop Grumman Corporation 2 awardees, including Northrop Grumman Systems Corporation Top agencies DLA (Defense Logistics Agency)	$233,160	0.5%	Rank history: not on the FY2022–FY2023 lists, #32 in FY2024 and #84 in FY2025; new, not ranked in FY2020.
43	Science Applications International Corporation Through Asrc Federal Facilities Logistics, LLC Top agencies DLA (Defense Logistics Agency)	$224,515	0.5%	Rank history: #85 in FY2022, #79 in FY2023 and not on the FY2024–FY2025 lists; up 23 since FY2020.
44	Stewart & Stevenson Fdda LLC Through Stewart & Stevenson Power Products LLC Top agencies DLA (Defense Logistics Agency)	$213,631	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
45	Hupp & Associates Inc. Top agencies DLA (Defense Logistics Agency)	$204,558	0.5%	Rank history: #5 in FY2022, #22 in FY2023, #33 in FY2024 and not on the FY2025 list; down 35 since FY2020.
46	Shapes Group Ltd Co. Top agencies DLA (Defense Logistics Agency)	$200,560	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
47	Tate Andale, LLC Top agencies DLA (Defense Logistics Agency)	$186,998	0.4%	Rank history: #63 in FY2022, #77 in FY2023, #78 in FY2024 and not on the FY2025 list; up 72 since FY2020.
48	Global Logistics Strategies Inc. Top agencies DLA (Defense Logistics Agency)	$183,449	0.4%	Rank history: not on the FY2022–FY2023 lists, #61 in FY2024 and #90 in FY2025; up 62 since FY2020.
49	Tattersall Supply, LLC Top agencies DHS (Department of Homeland Security) DOS (Department of State)	$181,202	0.4%	Rank history: not on the FY2022 list, #68 in FY2023, #86 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
50	3M Company Through Solventum Purification Inc. Top agencies Navy (Department of the Navy)	$179,687	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
51	Echelon Supply and Service, Inc. Top agencies DLA (Defense Logistics Agency)	$174,733	0.4%	Rank history: #40 in FY2022 and not on the FY2023–FY2025 lists; down 22 since FY2020.
52	Carrier Process Equipment Group Inc. Top agencies Army (Department of the Army)	$166,510	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
53	Bruker Corporation Through Bruker Detection Corp Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$162,692	0.4%	Rank history: #83 in FY2022, #47 in FY2023, #50 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
54	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency)	$159,555	0.4%	Rank history: #43 in FY2022, #90 in FY2023, not on the FY2024 list and #71 in FY2025; down 14 since FY2020.
55	SSI Technology Inc. Top agencies DLA (Defense Logistics Agency)	$159,185	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
56	Cavanaugh Government Group, LLC Top agencies DLA (Defense Logistics Agency)	$157,074	0.3%	Rank history: not on the FY2022–FY2025 lists; up 307 since FY2020.
57	Lawrence Factor, Inc. Top agencies DLA (Defense Logistics Agency)	$153,373	0.3%	Rank history: not on the FY2022–FY2025 lists; down 1 since FY2020.
58	Hydraulics International, Inc. Top agencies DLA (Defense Logistics Agency)	$148,797	0.3%	Rank history: #39 in FY2022, #70 in FY2023, #28 in FY2024 and #25 in FY2025; down 9 since FY2020.
59	Linmarr Associates, Inc. Top agencies DLA (Defense Logistics Agency)	$145,439	0.3%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
60	Aqua-Chem, Inc. Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$145,291	0.3%	Rank history: #74 in FY2022, #53 in FY2023, #67 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
61	Falls Filtration Technologies, Inc. Top agencies DLA (Defense Logistics Agency)	$143,416	0.3%	Rank history: #30 in FY2022, #48 in FY2023, #52 in FY2024 and #57 in FY2025; unchanged since FY2020.
62	U.s.a. Spares Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$139,560	0.3%	Rank history: not on the FY2022–FY2025 lists; down 8 since FY2020.
63	Fincantieri Marine Systems North America Inc. Top agencies DLA (Defense Logistics Agency)	$139,016	0.3%	Rank history: not on the FY2022–FY2025 lists; up 152 since FY2020.
64	ECI Defense Group, Inc. Top agencies DLA (Defense Logistics Agency)	$136,677	0.3%	Rank history: #22 in FY2022, #11 in FY2023, #17 in FY2024 and #11 in FY2025; down 53 since FY2020.
65	JFW Industries Incorporated Top agencies OSD (Office of the Secretary of Defense)	$134,140	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
66	Daikin Applied Americas Inc Through Flanders Filters, Inc. Top agencies Navy (Department of the Navy)	$131,121	0.3%	Rank history: #59 in FY2022 and not on the FY2023–FY2025 lists; up 20 since FY2020.
67	Phoenix Systems Engineering Inc. Top agencies DLA (Defense Logistics Agency)	$127,588	0.3%	Rank history: not on the FY2022 list, #92 in FY2023 and not on the FY2024–FY2025 lists; up 18 since FY2020.
68	Applied Hydraulics Corporation Top agencies DLA (Defense Logistics Agency)	$126,223	0.3%	Rank history: #92 in FY2022, #96 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
69	Mitchell Aircraft, LLC Top agencies DLA (Defense Logistics Agency)	$122,234	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
70	Blue Ash Industrial Supply Inc. Top agencies DLA (Defense Logistics Agency)	$121,746	0.3%	Rank history: #65 in FY2022 and not on the FY2023–FY2025 lists; up 35 since FY2020.
71	Jag Components, LLC Top agencies DLA (Defense Logistics Agency)	$121,334	0.3%	Rank history: #72 in FY2022, not on the FY2023 list, #39 in FY2024 and not on the FY2025 list; up 41 since FY2020.
72	K & A Sales and Marketing, Inc. Top agencies DLA (Defense Logistics Agency)	$120,278	0.3%	Rank history: #81 in FY2022, #89 in FY2023 and not on the FY2024–FY2025 lists; up 41 since FY2020.
73	Penn Detroit Diesel Allison LLC Through Penn Power Group LLC Top agencies DLA (Defense Logistics Agency)	$113,337	0.3%	Rank history: #29 in FY2022 and not on the FY2023–FY2025 lists; down 5 since FY2020.
74	Clean Air Consultants, Inc. Top agencies USAF (Department of the Air Force)	$107,549	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
75	New Era Contract Sales Inc. Top agencies DLA (Defense Logistics Agency)	$107,442	0.2%	Rank history: not on the FY2022–FY2024 lists and #98 in FY2025; up 113 since FY2020.
76	Elbit Systems Ltd Through Real-Time Laboratories, LLC Top agencies DLA (Defense Logistics Agency)	$106,695	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
77	Argo Turboserve Corporation Top agencies DLA (Defense Logistics Agency)	$104,653	0.2%	Rank history: #36 in FY2022 and not on the FY2023–FY2025 lists; up 22 since FY2020.
78	B & H International LLC Top agencies Navy (Department of the Navy)	$98,898	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
79	Paxton Co Top agencies DHS (Department of Homeland Security)	$98,572	0.2%	Rank history: #48 in FY2022, not on the FY2023 list, #95 in FY2024 and not on the FY2025 list; up 49 since FY2020.
80	Phoenix Trading Inc. Top agencies DLA (Defense Logistics Agency)	$91,791	0.2%	Rank history: #51 in FY2022, #31 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2020.
81	Pacific Consolidated Industries LLC Top agencies DLA (Defense Logistics Agency)	$89,402	0.2%	Rank history: #67 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
82	R & M Government Services Inc. Top agencies DLA (Defense Logistics Agency)	$84,861	0.2%	Rank history: not on the FY2022 list, #41 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
83	Amafha Enterprise Inc. Top agencies DLA (Defense Logistics Agency)	$83,922	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
84	LBS Enterprises Inc. Top agencies DLA (Defense Logistics Agency)	$83,055	0.2%	Rank history: not on the FY2022 list, #94 in FY2023, #71 in FY2024 and #77 in FY2025; up 240 since FY2020.
85	Black Bay Aerospace LLC Top agencies DLA (Defense Logistics Agency)	$80,045	0.2%	Rank history: not on the FY2022–FY2023 lists, #13 in FY2024 and not on the FY2025 list; up 223 since FY2020.
86	Seven North Industries, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$79,309	0.2%	Rank history: #87 in FY2022, #76 in FY2023, not on the FY2024 list and #69 in FY2025; up 64 since FY2020.
87	Yajin Guangzhou Water Treatmeng Equipment Limited Company Top agencies DOS (Department of State)	$78,309	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
88	Treadwell Corporation (Delaware) Top agencies Navy (Department of the Navy)	$73,867	0.2%	Rank history: #58 in FY2022, #51 in FY2023, #48 in FY2024 and #38 in FY2025; new, not ranked in FY2020.
89	High Purity Northwest, Inc. Top agencies DOE (Department of Energy)	$73,330	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
90	Larkos Packing and Distribution Inc. Top agencies DLA (Defense Logistics Agency)	$72,595	0.2%	Rank history: #88 in FY2022, #69 in FY2023, #49 in FY2024 and #16 in FY2025; up 41 since FY2020.
91	Bhayana Brothers LLC Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$71,063	0.2%	Rank history: not on the FY2022–FY2025 lists; up 11 since FY2020.
92	Adecare Logistics, LLC Top agencies DLA (Defense Logistics Agency)	$70,361	0.2%	Rank history: not on the FY2022–FY2025 lists; up 313 since FY2020.
93	JE Hurley Inc. Top agencies DLA (Defense Logistics Agency)	$70,218	0.2%	Rank history: not on the FY2022–FY2025 lists; up 65 since FY2020.
94	Atap Inc. Top agencies DLA (Defense Logistics Agency)	$68,939	0.2%	Rank history: not on the FY2022 list, #26 in FY2023, #57 in FY2024 and #20 in FY2025; up 148 since FY2020.
95	Caterpillar Inc. 2 awardees, including Carter Machinery Company, Incorporated Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$68,000	0.2%	Rank history: not on the FY2022–FY2025 lists; up 22 since FY2020.
96	Triad Technologies LLC Top agencies DLA (Defense Logistics Agency)	$66,939	0.1%	Rank history: #62 in FY2022, not on the FY2023 list, #45 in FY2024 and #74 in FY2025; up 90 since FY2020.
97	Renk Systems Corporation Top agencies DLA (Defense Logistics Agency)	$64,384	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
98	MDF Technologies Inc. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$63,614	0.1%	Rank history: not on the FY2022–FY2023 lists, #97 in FY2024 and #44 in FY2025; up 61 since FY2020.
99	Phillips Corporation Top agencies DLA (Defense Logistics Agency)	$63,447	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	Stealth Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$63,392	0.1%	Rank history: not on the FY2022–FY2025 lists; up 191 since FY2020.

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100 of 453 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 $45.1 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 4330 contractors in FY2021?

1. Filtration Group Corporation ($2.81M), 2. Danaher Corporation ($2.16M), 3. Alfa Laval Inc. ($2.14M), 4. Integrated Procurement Technologies ($1.9M), 5. Kampi Components Co Inc. ($1.78M), 6. The Boeing Company ($1.58M), 7. RTX Corporation ($1.53M), 8. Statz Corp ($1.45M), 9. Supplycore LLC ($1.14M), 10. Donaldson Company, Inc. ($1.05M).

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