Top 100 Contractors in PSC 4140: Fans, Air Circulators, and Blower Equipment, FY2021

Name: Top 100 Contractors in PSC 4140: Fans, Air Circulators, and Blower Equipment, FY2021
Creator: GovTribe

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

The top 10 won 49% of FY2021 PSC 4140 contract dollars

Contract obligations: $52,953,595 Net of deobligations, by contracts coded PSC 4140
Contractors: 365 Parent companies with an obligation
Largest contractor: Colfax Corporation $4.97 million, 9.1% 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	Colfax Corporation Through Howden American Fan Company Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$4,972,813	9.1%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
2	Howden American Fan Company Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security) Navy (Department of the Navy)	$4,946,573	9.0%	Rank history: #1 in FY2022, #2 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
3	Ashland Electric Products Inc. Top agencies DLA (Defense Logistics Agency)	$2,715,283	5.0%	Rank history: #5 in FY2022, #8 in FY2023, #8 in FY2024 and #14 in FY2025; up 1 since FY2020.
4	Howden North America Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$2,710,328	4.9%	Rank history: not on the FY2022–FY2025 lists; up 3 since FY2020.
5	Cepeda Associates, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$2,554,629	4.7%	Rank history: #10 in FY2022, #22 in FY2023, #39 in FY2024 and not on the FY2025 list; up 35 since FY2020.
6	Dynamic Air Engineering, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$2,377,893	4.3%	Rank history: #15 in FY2022, #11 in FY2023, #9 in FY2024 and #7 in FY2025; down 3 since FY2020.
7	Aero Precision Industries LLC Through Allclear Aerospace & Defense, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$1,954,214	3.6%	Rank history: #9 in FY2022, #6 in FY2023, #5 in FY2024 and not on the FY2025 list; up 9 since FY2020.
8	Graham Corp Through Barber-Nichols, LLC Top agencies NASA (National Aeronautics and Space Administration)	$1,863,135	3.4%	Rank history: not on the FY2022 list, #82 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
9	Hansome Energy Systems Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,552,210	2.8%	Rank history: #2 in FY2022, #1 in FY2023, #1 in FY2024 and #3 in FY2025; up 373 since FY2020.
10	Euramco Safety, Inc. Top agencies Navy (Department of the Navy)	$1,359,596	2.5%	Rank history: #12 in FY2022, #19 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
11	RTX Corporation 4 awardees, including Hamilton Sundstrand Corporation, Raytheon Company and Hornet Acquisitionco, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,245,734	2.3%	Rank history: #4 in FY2022, #13 in FY2023 and not on the FY2024–FY2025 lists; up 19 since FY2020.
12	Transdigm Group Incorporated 2 awardees, including Electromech Technologies LLC and Skurka Aerospace Inc. Top agencies DLA (Defense Logistics Agency)	$1,161,060	2.1%	Rank history: #53 in FY2022, #64 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2020.
13	Ronal Industries, Inc. Top agencies Army (Department of the Army)	$1,104,179	2.0%	Rank history: #20 in FY2022, #12 in FY2023, #6 in FY2024 and #17 in FY2025; down 2 since FY2020.
14	Noble Sales Co. Inc. 2 awardees, including Tactical & Survival Specialties, LLC and Noble Supply & Logistics, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$1,102,593	2.0%	Rank history: #81 in FY2022, not on the FY2023 list, #76 in FY2024 and not on the FY2025 list; up 68 since FY2020.
15	Super Vacuum Manufacturing Co., Inc. Top agencies Navy (Department of the Navy)	$1,004,329	1.8%	Rank history: #61 in FY2022, not on the FY2023 list, #18 in FY2024 and #24 in FY2025; up 19 since FY2020.
16	Honeywell International Inc. 3 awardees Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$872,524	1.6%	Rank history: #50 in FY2022, #7 in FY2023, #2 in FY2024 and #2 in FY2025; down 14 since FY2020.
17	Creare LLC Top agencies NASA (National Aeronautics and Space Administration)	$845,340	1.5%	Rank history: not on the FY2022–FY2025 lists; up 25 since FY2020.
18	3ON Systems Inc. Top agencies DLA (Defense Logistics Agency)	$841,688	1.5%	Rank history: #8 in FY2022, #15 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2020.
19	Barber-Nichols, LLC Top agencies NASA (National Aeronautics and Space Administration)	$775,950	1.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
20	Lektron Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$699,308	1.3%	Rank history: #7 in FY2022, not on the FY2023 list, #19 in FY2024 and #18 in FY2025; down 7 since FY2020.
21	L3Harris Technologies, Inc. 5 awardees, including L3Harris Maritime Power & Energy Solutions, Inc. and L3 Technologies, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$539,223	1.0%	Rank history: not on the FY2022 list, #27 in FY2023, #74 in FY2024 and #12 in FY2025; up 25 since FY2020.
22	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency)	$462,082	0.8%	Rank history: #14 in FY2022, #17 in FY2023, #23 in FY2024 and #11 in FY2025; down 5 since FY2020.
23	Allied Defense Industries Inc. 3 awardees, including Aero International, LLC and Allied Marine Services LLC Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$456,252	0.8%	Rank history: #70 in FY2022, #28 in FY2023 and not on the FY2024–FY2025 lists; up 35 since FY2020.
24	Signature Renovations LLC Top agencies HHS (Department of Health and Human Services)	$447,468	0.8%	Rank history: not on the FY2022–FY2025 lists; up 61 since FY2020.
25	Alaska Native Government Services LLC Through Copper River Infrastructure Services LLC Top agencies USDA (Department of Agriculture)	$446,222	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
26	Filtmore Technologies LLC Top agencies Army (Department of the Army)	$378,949	0.7%	Rank history: #16 in FY2022, #14 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
27	S I T Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$356,363	0.7%	Rank history: #31 in FY2022, #52 in FY2023, #27 in FY2024 and #52 in FY2025; up 11 since FY2020.
28	Lockheed Martin Corporation 6 awardees, including Sikorsky Aircraft Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$331,226	0.6%	Rank history: #11 in FY2022, #3 in FY2023, #7 in FY2024 and #15 in FY2025; down 18 since FY2020.
29	Qleanair Scandinavia Inc. Top agencies VA (Department of Veterans Affairs)	$317,000	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
30	Abatement Technologies, Inc. Top agencies VA (Department of Veterans Affairs)	$293,719	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
31	CD & T Logistics Inc. Top agencies DOT (Department of Transportation)	$292,621	0.5%	Rank history: #22 in FY2022, #56 in FY2023 and not on the FY2024–FY2025 lists; up 34 since FY2020.
32	Motor Magnetics, Inc. Top agencies DLA (Defense Logistics Agency)	$289,585	0.5%	Rank history: #45 in FY2022, not on the FY2023 list, #34 in FY2024 and #35 in FY2025; down 23 since FY2020.
33	Colossal Contracting LLC Top agencies VA (Department of Veterans Affairs)	$271,254	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
34	American Compressor Company Top agencies Navy (Department of the Navy)	$268,800	0.5%	Rank history: #33 in FY2022, #58 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2020.
35	Meggitt PLC 2 awardees, including Meggitt Defense Systems, Inc. Top agencies DLA (Defense Logistics Agency)	$246,261	0.4%	Rank history: #19 in FY2022, #81 in FY2023 and not on the FY2024–FY2025 lists; down 30 since FY2020.
36	Windward Enterprises, LLC Top agencies DLA (Defense Logistics Agency)	$243,368	0.4%	Rank history: #41 in FY2022, #37 in FY2023, #29 in FY2024 and #64 in FY2025; down 14 since FY2020.
37	Saab AB Through Saab Inc. Top agencies Navy (Department of the Navy)	$238,023	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
38	Basic Technologies Inc. Top agencies Army (Department of the Army)	$215,579	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
39	IBP Consulting, Inc. Top agencies DLA (Defense Logistics Agency)	$210,645	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
40	The Spencer Turbine Company Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$204,442	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
41	Johnson Controls Security Solutions LLC Through Johnson Controls Inc. Top agencies VA (Department of Veterans Affairs)	$201,300	0.4%	Rank history: #93 in FY2022 and not on the FY2023–FY2025 lists; up 209 since FY2020.
42	Bell Boeing Joint Project Office Top agencies DLA (Defense Logistics Agency)	$197,398	0.4%	Rank history: #78 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
43	Leonardo S.p.A. 3 awardees, including Engineered Coil Company, DRS Naval Power Systems Inc. and Laurel Technologies Partnership Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$195,758	0.4%	Rank history: #49 in FY2022, #42 in FY2023, #30 in FY2024 and #36 in FY2025; up 91 since FY2020.
44	Delta T, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DHS (Department of Homeland Security)	$195,273	0.4%	Rank history: #44 in FY2022, #26 in FY2023, #53 in FY2024 and not on the FY2025 list; up 8 since FY2020.
45	Airgle Corporation Top agencies HHS (Department of Health and Human Services)	$192,000	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
46	Brighton Cromwell LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$191,082	0.3%	Rank history: not on the FY2022–FY2025 lists; up 125 since FY2020.
47	Allient Inc. Through Globe Motors, Inc. Top agencies DLA (Defense Logistics Agency)	$178,494	0.3%	Rank history: #65 in FY2022, #49 in FY2023, #60 in FY2024 and #47 in FY2025; up 7 since FY2020.
48	Advanced Cooling Technologies Inc. Top agencies Navy (Department of the Navy)	$172,741	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
49	Jo-Kell Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$165,377	0.3%	Rank history: not on the FY2022–FY2025 lists; up 192 since FY2020.
50	Mil Spec Inc. Top agencies DLA (Defense Logistics Agency)	$158,565	0.3%	Rank history: #82 in FY2022, #92 in FY2023, #86 in FY2024 and not on the FY2025 list; up 60 since FY2020.
51	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$154,810	0.3%	Rank history: #57 in FY2022, #20 in FY2023, #38 in FY2024 and #90 in FY2025; up 13 since FY2020.
52	U.s.a. Spares Inc. Top agencies Navy (Department of the Navy)	$148,000	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
53	Kihomac Inc. Top agencies DLA (Defense Logistics Agency)	$145,311	0.3%	Rank history: #46 in FY2022, #83 in FY2023 and not on the FY2024–FY2025 lists; down 28 since FY2020.
54	D.w. Boyd Corporation Top agencies Navy (Department of the Navy)	$134,973	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
55	Westsim Engineering, Inc. Top agencies DLA (Defense Logistics Agency)	$122,848	0.2%	Rank history: #29 in FY2022 and not on the FY2023–FY2025 lists; up 119 since FY2020.
56	UNI Corporation Top agencies Navy (Department of the Navy)	$117,126	0.2%	Rank history: #43 in FY2022, #44 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
57	Pht Aerospace LLC Top agencies DLA (Defense Logistics Agency)	$113,763	0.2%	Rank history: not on the FY2022 list, #46 in FY2023, #72 in FY2024 and #49 in FY2025; new, not ranked in FY2020.
58	The Boeing Company 3 awardees, including Insitu, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$113,320	0.2%	Rank history: #21 in FY2022, #34 in FY2023, #17 in FY2024 and #73 in FY2025; down 39 since FY2020.
59	New Galaxy Air Conditioning and Refrigeration W.L.L. Top agencies USAF (Department of the Air Force)	$109,627	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
60	Echelon Supply and Service, Inc. Top agencies DLA (Defense Logistics Agency)	$108,781	0.2%	Rank history: #67 in FY2022, #66 in FY2023 and not on the FY2024–FY2025 lists; up 20 since FY2020.
61	Aantilia LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$108,432	0.2%	Rank history: #13 in FY2022, #30 in FY2023, not on the FY2024 list and #71 in FY2025; down 22 since FY2020.
62	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency)	$106,485	0.2%	Rank history: #23 in FY2022, #32 in FY2023, #32 in FY2024 and #20 in FY2025; down 35 since FY2020.
63	Wrigglesworth Enterprises Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$103,524	0.2%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
64	B & H International LLC Top agencies DOJ (Department of Justice) USAF (Department of the Air Force)	$101,474	0.2%	Rank history: not on the FY2022–FY2025 lists; down 41 since FY2020.
65	Howell Laboratories Inc. Top agencies Navy (Department of the Navy)	$100,000	0.2%	Rank history: not on the FY2022–FY2024 lists and #88 in FY2025; new, not ranked in FY2020.
66	Camfil AB Through Camfil USA Inc. Top agencies Navy (Department of the Navy)	$98,441	0.2%	Rank history: not on the FY2022–FY2025 lists; up 29 since FY2020.
67	Greenworx Inc. Top agencies Army (Department of the Army)	$96,752	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
68	Elevan LLC Top agencies USAF (Department of the Air Force)	$94,670	0.2%	Rank history: #17 in FY2022, #24 in FY2023, #16 in FY2024 and #23 in FY2025; new, not ranked in FY2020.
69	Unitherm Furnace LLC Top agencies Army (Department of the Army)	$93,759	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
70	Powerhouse Equipment & Engineering Co. Inc. Through Quincy Compressor LLC Top agencies Navy (Department of the Navy)	$92,905	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
71	General Products, Aerospace and Defense LLC Top agencies DLA (Defense Logistics Agency)	$89,625	0.2%	Rank history: #37 in FY2022, #68 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
72	Aviarms Support Corp Top agencies DLA (Defense Logistics Agency)	$88,107	0.2%	Rank history: #63 in FY2022 and not on the FY2023–FY2025 lists; up 254 since FY2020.
73	Aviate Enterprises, Inc. Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) Army (Department of the Army)	$86,267	0.2%	Rank history: not on the FY2022 list, #94 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
74	Coil Winding Specialist, Inc. Top agencies DOS (Department of State) Army (Department of the Army)	$84,628	0.2%	Rank history: not on the FY2022–FY2025 lists; up 55 since FY2020.
75	Buffalo Turbine Defense LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$84,611	0.2%	Rank history: #73 in FY2022 and not on the FY2023–FY2025 lists; down 46 since FY2020.
76	JTM Enterprises LLC Top agencies DOI (Department of the Interior)	$82,750	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
77	Bronze Star LLC Top agencies VA (Department of Veterans Affairs)	$82,371	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
78	Sherwood Avionics and Accessories, Inc. Top agencies DHS (Department of Homeland Security)	$81,396	0.1%	Rank history: #55 in FY2022, #62 in FY2023, #13 in FY2024 and #55 in FY2025; new, not ranked in FY2020.
79	Beswick Corporation Top agencies DLA (Defense Logistics Agency)	$80,902	0.1%	Rank history: not on the FY2022–FY2023 lists, #87 in FY2024 and not on the FY2025 list; up 47 since FY2020.
80	Dreamfind, Inc. Top agencies DLA (Defense Logistics Agency)	$79,292	0.1%	Rank history: #94 in FY2022 and not on the FY2023–FY2025 lists; up 33 since FY2020.
81	Theodor Wille Intertrade GMBH Through Atlantic Diving Supply, Inc. Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$76,453	0.1%	Rank history: #54 in FY2022, #47 in FY2023 and not on the FY2024–FY2025 lists; down 37 since FY2020.
82	Sky Creative for Trading and Contracting Company Top agencies USAF (Department of the Air Force)	$75,880	0.1%	Rank history: not on the FY2022–FY2025 lists; up 66 since FY2020.
83	BBA Aviation PLC Through Ontic Engineering & Manufacturing, Inc. Top agencies DLA (Defense Logistics Agency)	$74,066	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
84	Science Applications International Corporation Through Asrc Federal Facilities Logistics, LLC Top agencies DLA (Defense Logistics Agency)	$71,908	0.1%	Rank history: #59 in FY2022, #33 in FY2023 and not on the FY2024–FY2025 lists; down 48 since FY2020.
85	Statz Corp Top agencies DLA (Defense Logistics Agency)	$71,500	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
86	Am General LLC 2 awardees, including Crenlo Cab Products, LLC Top agencies DLA (Defense Logistics Agency) DOT (Department of Transportation)	$70,728	0.1%	Rank history: #3 in FY2022, #9 in FY2023, #33 in FY2024 and not on the FY2025 list; up 61 since FY2020.
87	Ametek Inc. Through Ametek Airtechnology Group Limited Top agencies Navy (Department of the Navy)	$69,360	0.1%	Rank history: #30 in FY2022, #80 in FY2023, #31 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
88	Export 220Volt Inc. Top agencies Army (Department of the Army)	$69,113	0.1%	Rank history: #34 in FY2022 and not on the FY2023–FY2025 lists; down 76 since FY2020.
89	KLB Enterprises Corp Top agencies Navy (Department of the Navy)	$67,464	0.1%	Rank history: not on the FY2022–FY2025 lists; up 4 since FY2020.
90	Astro Machine & Tool Works, LLC Top agencies DLA (Defense Logistics Agency)	$67,400	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
91	Cox Industrial Services, Inc. Top agencies Navy (Department of the Navy)	$66,917	0.1%	Rank history: #47 in FY2022, #40 in FY2023, #55 in FY2024 and not on the FY2025 list; down 42 since FY2020.
92	Resolute Industrial LLC Top agencies VA (Department of Veterans Affairs)	$65,030	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
93	Delta \"T\" Systems Inc. Top agencies DHS (Department of Homeland Security)	$64,223	0.1%	Rank history: not on the FY2022–FY2025 lists; down 18 since FY2020.
94	Caladwich Consulting LLC Top agencies DLA (Defense Logistics Agency)	$62,235	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
95	New Future Contracting Top agencies USAF (Department of the Air Force)	$61,020	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
96	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency)	$60,090	0.1%	Rank history: #24 in FY2022, #10 in FY2023, #14 in FY2024 and #29 in FY2025; down 81 since FY2020.
97	Celina Tent Inc. Top agencies VA (Department of Veterans Affairs)	$60,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
98	Ventilation Specialists, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$58,047	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	Portable Air Group LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$55,229	0.1%	Rank history: not on the FY2022–FY2024 lists and #43 in FY2025; up 79 since FY2020.
100	Chemring Group PLC Through Chemring Sensors and Electronic Systems, Inc. Top agencies DLA (Defense Logistics Agency)	$54,880	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.

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100 of 365 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 $54.8 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 4140 contractors in FY2021?

1. Colfax Corporation ($4.97M), 2. Howden American Fan Company ($4.95M), 3. Ashland Electric Products Inc. ($2.72M), 4. Howden North America Inc. ($2.71M), 5. Cepeda Associates, Inc. ($2.55M), 6. Dynamic Air Engineering, Inc. ($2.38M), 7. Aero Precision Industries LLC ($1.95M), 8. Graham Corp ($1.86M), 9. Hansome Energy Systems Inc. ($1.55M), 10. Euramco Safety, Inc. ($1.36M).

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