Top 100 Contractors in PSC 4520: Space and Water Heating Equipment, FY2023

Name: Top 100 Contractors in PSC 4520: Space and Water Heating Equipment, FY2023
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2022 – Sep 30, 2023 Code page on GovTribe

The top 10 won 65% of FY2023 PSC 4520 contract dollars

Contract obligations: $40,015,333 Net of deobligations, by contracts coded PSC 4520
Contractors: 220 Parent companies with an obligation
Largest contractor: Hunter Defense Technolog $11.9 million, 29.1% 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	Hunter Defense Technolog Through HDT Expeditionary Systems Inc. Top agencies Army (Department of the Army)	$11,881,658	29.1%	Rank history: not on the FY2021 list, #12 in FY2022 and not on the FY2024–FY2025 lists; up 11 since FY2022.
2	Windward Enterprises, LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$6,224,414	15.3%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2024 and #2 in FY2025; down 1 since FY2022.
3	Argo Turboserve Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,614,755	4.0%	Rank history: #2 in FY2021, #3 in FY2022, #3 in FY2024 and #3 in FY2025; unchanged since FY2022.
4	Electric Heater Company the Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$1,554,457	3.8%	Rank history: #9 in FY2021, #6 in FY2022, #30 in FY2024 and #5 in FY2025; up 2 since FY2022.
5	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency)	$1,204,174	3.0%	Rank history: #4 in FY2021, #7 in FY2022, #7 in FY2024 and #11 in FY2025; up 2 since FY2022.
6	Lockheed Martin Corporation 3 awardees, including Sikorsky Aircraft Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,147,616	2.8%	Rank history: #13 in FY2021, #9 in FY2022, #2 in FY2024 and #1 in FY2025; up 3 since FY2022.
7	Boneal, Incorporated Top agencies USAF (Department of the Air Force)	$998,016	2.4%	Rank history: #10 in FY2021, not on the FY2022 list, #5 in FY2024 and #4 in FY2025; returned.
8	Advanced Products Services Inc. Top agencies DLA (Defense Logistics Agency)	$803,398	2.0%	Rank history: not on the FY2021–FY2022 lists, #8 in FY2024 and #15 in FY2025; new.
9	Talen Energy Marketing LLC Through Mcclure Company Top agencies DOI (Department of the Interior)	$630,450	1.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
10	MCO Solutions, Inc. Top agencies DLA (Defense Logistics Agency)	$626,344	1.5%	Rank history: #54 in FY2021, #15 in FY2022, #17 in FY2024 and #22 in FY2025; up 5 since FY2022.
11	Government of Canada Through Canadian Commercial Corporation Top agencies DLA (Defense Logistics Agency)	$623,557	1.5%	Rank history: #3 in FY2021, #33 in FY2022 and not on the FY2024–FY2025 lists; up 22 since FY2022.
12	Burhani Enterprises Inc. Top agencies DLA (Defense Logistics Agency) DOI (Department of the Interior)	$596,254	1.5%	Rank history: #20 in FY2021, #21 in FY2022, #85 in FY2024 and #48 in FY2025; up 9 since FY2022.
13	Mcclure Company Top agencies DOI (Department of the Interior)	$502,126	1.2%	Rank history: not on the FY2021–FY2022 lists, #35 in FY2024 and not on the FY2025 list; new.
14	Wood Environment & Infrastructure Solutions Inc. Through Ethosenergy Accessories and Components, LLC Top agencies Navy (Department of the Navy)	$476,500	1.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
15	Integrated Supply of Columbus, Inc. Top agencies Army (Department of the Army)	$424,360	1.0%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
16	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$417,710	1.0%	Rank history: #5 in FY2021, #4 in FY2022, #10 in FY2024 and #7 in FY2025; down 12 since FY2022.
17	Williamsville Resources II, Inc. Top agencies DOI (Department of the Interior)	$349,500	0.9%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
18	International Thermal Research Ltd Top agencies DLA (Defense Logistics Agency)	$325,010	0.8%	Rank history: #15 in FY2021, #5 in FY2022, #12 in FY2024 and #32 in FY2025; down 13 since FY2022.
19	RNK International, Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$293,517	0.7%	Rank history: #42 in FY2021, #79 in FY2022, #33 in FY2024 and #19 in FY2025; up 60 since FY2022.
20	Phoenix Trading Inc. Top agencies DLA (Defense Logistics Agency)	$290,223	0.7%	Rank history: #17 in FY2021, #54 in FY2022 and not on the FY2024–FY2025 lists; up 34 since FY2022.
21	Winwholesale Inc. 3 awardees, including Central Oklahoma Winnelson Co, Temple Winnelson Co and Noland Company Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) DLA (Defense Logistics Agency)	$272,903	0.7%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
22	Veterans Elite Inc Top agencies VA (Department of Veterans Affairs)	$244,495	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
23	Pueblo Hotel Supply Co Top agencies DLA (Defense Logistics Agency) DOJ (Department of Justice)	$232,071	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
24	Integrated Procurement Technologies Top agencies DLA (Defense Logistics Agency)	$219,465	0.5%	Rank history: not on the FY2021 list, #61 in FY2022, #6 in FY2024 and #8 in FY2025; up 37 since FY2022.
25	Allied Defense Industries Inc. Top agencies DLA (Defense Logistics Agency)	$209,623	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
26	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$209,409	0.5%	Rank history: #59 in FY2021, #72 in FY2022, #18 in FY2024 and #50 in FY2025; up 46 since FY2022.
27	2Lyons Aerospace LLC Top agencies DLA (Defense Logistics Agency)	$208,579	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
28	Johnson Controls Security Solutions LLC 2 awardees, including Johnson Controls Navy Systems, LLC and Johnson Controls Inc. Top agencies DLA (Defense Logistics Agency) DOJ (Department of Justice) Navy (Department of the Navy)	$199,196	0.5%	Rank history: #11 in FY2021, #16 in FY2022, #47 in FY2024 and not on the FY2025 list; down 12 since FY2022.
29	Commercial Parts & Service of Columbus, Ohio, Inc. Top agencies DLA (Defense Logistics Agency)	$189,062	0.5%	Rank history: #25 in FY2021, #24 in FY2022, #84 in FY2024 and not on the FY2025 list; down 5 since FY2022.
30	In-Mar Solutions LLC Top agencies DHS (Department of Homeland Security)	$182,700	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
31	Delval Equipment Corporation Top agencies DOJ (Department of Justice)	$179,472	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
32	Surefin Mechanical Equipment Inc. Top agencies DLA (Defense Logistics Agency)	$178,185	0.4%	Rank history: #31 in FY2021, #31 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
33	Warfighter Focused Logistics Inc. Top agencies DLA (Defense Logistics Agency)	$177,204	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
34	Utility Systems Solutions, Inc. Top agencies DOJ (Department of Justice)	$160,411	0.4%	Rank history: not on the FY2021 list, #25 in FY2022 and not on the FY2024–FY2025 lists; down 9 since FY2022.
35	Wisecom Technologies Inc. Top agencies Army (Department of the Army)	$159,341	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
36	Smiths Group PLC Through Tutco, LLC Top agencies Navy (Department of the Navy)	$159,341	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
37	Larkos Packing and Distribution Inc. Top agencies DLA (Defense Logistics Agency)	$158,461	0.4%	Rank history: #90 in FY2021, #56 in FY2022, #13 in FY2024 and #23 in FY2025; up 19 since FY2022.
38	Industrial Engineering and Equipment Company Incorporated Through Indeeco LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Commerce (Department of Commerce)	$154,754	0.4%	Rank history: #19 in FY2021, #43 in FY2022, #11 in FY2024 and not on the FY2025 list; up 5 since FY2022.
39	Active Gear Company of Canada Limited Top agencies DLA (Defense Logistics Agency)	$148,850	0.4%	Rank history: #61 in FY2021, #63 in FY2022, #87 in FY2024 and #59 in FY2025; up 24 since FY2022.
40	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency)	$141,805	0.3%	Rank history: not on the FY2021–FY2022 lists, #75 in FY2024 and not on the FY2025 list; up 125 since FY2022.
41	Apex Pinnacle Corp Top agencies DLA (Defense Logistics Agency)	$140,801	0.3%	Rank history: not on the FY2021 list, #77 in FY2022, not on the FY2024 list and #13 in FY2025; up 36 since FY2022.
42	Westex Group, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) DOJ (Department of Justice)	$128,900	0.3%	Rank history: #82 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
43	Paxton Co Top agencies DHS (Department of Homeland Security)	$126,250	0.3%	Rank history: not on the FY2021 list, #58 in FY2022 and not on the FY2024–FY2025 lists; up 15 since FY2022.
44	Water Heater Distributors, LLC Top agencies DOJ (Department of Justice) USAF (Department of the Air Force) Army (Department of the Army)	$124,682	0.3%	Rank history: not on the FY2021–FY2022 lists, #40 in FY2024 and #94 in FY2025; new.
45	W.w. Grainger, Inc. Top agencies GSA (General Services Administration) DOS (Department of State) HHS (Department of Health and Human Services)	$120,075	0.3%	Rank history: #35 in FY2021, #22 in FY2022 and not on the FY2024–FY2025 lists; down 23 since FY2022.
46	Noble Supply & Logistics LLC Top agencies USAF (Department of the Air Force)	$116,941	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
47	Ferguson Enterprises Inc. Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security)	$114,464	0.3%	Rank history: not on the FY2021 list, #38 in FY2022 and not on the FY2024–FY2025 lists; down 9 since FY2022.
48	Mshc, Inc. Through Engineered Cooling Services LLC Top agencies DOJ (Department of Justice)	$112,500	0.3%	Rank history: #67 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
49	Science Applications International Corporation Through Asrc Federal Facilities Logistics, LLC Top agencies DLA (Defense Logistics Agency)	$105,048	0.3%	Rank history: #57 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
50	Hoosier Industrial Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$104,323	0.3%	Rank history: #100 in FY2021, not on the FY2022 list, #67 in FY2024 and #30 in FY2025; returned.
51	Westsim Engineering, Inc. Top agencies DLA (Defense Logistics Agency)	$96,957	0.2%	Rank history: #39 in FY2021, #28 in FY2022, #55 in FY2024 and #31 in FY2025; down 23 since FY2022.
52	R & M Government Services Inc. Top agencies DLA (Defense Logistics Agency)	$96,195	0.2%	Rank history: not on the FY2021–FY2022 lists, #16 in FY2024 and #6 in FY2025; new.
53	Samit LLC Top agencies DLA (Defense Logistics Agency)	$94,994	0.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #75 in FY2025; up 125 since FY2022.
54	Stealth Supply Inc Top agencies DLA (Defense Logistics Agency)	$94,877	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
55	Parker Construction Enterprises Inc. Top agencies Army (Department of the Army)	$92,307	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
56	Smith & Jamison Corporation Top agencies DLA (Defense Logistics Agency)	$90,809	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
57	Daikin Applied Americas Inc Top agencies DOT (Department of Transportation)	$89,506	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
58	Lunday Heating & Cooling Incorporated Top agencies DOI (Department of the Interior)	$86,796	0.2%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2024 and not on the FY2025 list; new.
59	MJL Enterprises LLC Top agencies VA (Department of Veterans Affairs)	$84,414	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
60	Atlanta Boiler & Mechanical, Inc. Top agencies DOJ (Department of Justice)	$84,000	0.2%	Rank history: not on the FY2021 list, #26 in FY2022, #91 in FY2024 and not on the FY2025 list; down 34 since FY2022.
61	Bepc LLC Top agencies DOJ (Department of Justice)	$78,857	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
62	Gateway International Inc. Top agencies DOS (Department of State)	$78,105	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
63	Steelmasters of Columbus Inc. Top agencies DLA (Defense Logistics Agency)	$77,781	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 106 since FY2022.
64	Sogen Company, Inc. Top agencies DLA (Defense Logistics Agency)	$76,843	0.2%	Rank history: #40 in FY2021, not on the FY2022 list, not on the FY2024 list and #79 in FY2025; up 54 since FY2022.
65	Valad Electric Heating Corp. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$69,368	0.2%	Rank history: #34 in FY2021, #29 in FY2022, #21 in FY2024 and #34 in FY2025; down 36 since FY2022.
66	Onodi Tool & Engineering Co Top agencies DLA (Defense Logistics Agency)	$63,550	0.2%	Rank history: #53 in FY2021, not on the FY2022 list, #70 in FY2024 and #67 in FY2025; returned.
67	Ray Blackman Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$63,500	0.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #35 in FY2025; new.
68	K5 Defense LLC Top agencies Commerce (Department of Commerce) USAF (Department of the Air Force)	$60,704	0.1%	Rank history: not on the FY2021–FY2022 lists, #14 in FY2024 and #42 in FY2025; up 80 since FY2022.
69	Marine Group Boat Works, LLC Top agencies Navy (Department of the Navy)	$60,584	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
70	FSR Consulting LLC Top agencies Army (Department of the Army)	$58,174	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
71	RTX Corporation Through Hamilton Sundstrand Corporation Top agencies DLA (Defense Logistics Agency)	$54,236	0.1%	Rank history: #21 in FY2021, not on the FY2022 list, #42 in FY2024 and not on the FY2025 list; returned.
72	US Air Conditioning Distributors LLC Top agencies Army (Department of the Army)	$53,582	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
73	Golden Relief Resources Ltd Top agencies USAF (Department of the Air Force)	$52,963	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
74	Grimco Inc. Top agencies Smithsonian (Smithsonian Institution)	$52,925	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
75	Phoenix Systems Engineering Inc. Top agencies DLA (Defense Logistics Agency)	$52,310	0.1%	Rank history: #14 in FY2021, #44 in FY2022, #98 in FY2024 and #36 in FY2025; down 31 since FY2022.
76	Allison Mill Sales & Service Top agencies SSA (Social Security Administration)	$50,070	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
77	Pierce Sales Company, Inc. Top agencies DLA (Defense Logistics Agency)	$49,397	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
78	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency)	$48,496	0.1%	Rank history: not on the FY2021 list, #80 in FY2022, #48 in FY2024 and #41 in FY2025; up 2 since FY2022.
79	Imeco Inc. Top agencies Navy (Department of the Navy)	$45,991	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
80	Caprice Electronics, Inc. Top agencies USAF (Department of the Air Force)	$45,484	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #45 in FY2025; new.
81	American Trading Service Inc Through American Trading Services, Inc. Top agencies DLA (Defense Logistics Agency)	$44,464	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
82	Waterbury Plumbing & Heating Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$43,070	0.1%	Rank history: #32 in FY2021, not on the FY2022 list, #65 in FY2024 and #51 in FY2025; up 37 since FY2022.
83	S I T Corporation Top agencies DLA (Defense Logistics Agency)	$42,103	0.1%	Rank history: #30 in FY2021, #47 in FY2022, #38 in FY2024 and #9 in FY2025; down 36 since FY2022.
84	PC Vision Inc Top agencies DHS (Department of Homeland Security)	$41,965	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
85	Alpha TEC Services Inc. Top agencies DOS (Department of State)	$40,349	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
86	Capitol Group Inc. Top agencies DOJ (Department of Justice)	$38,553	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
87	Dt-Trak Consulting, Inc. Top agencies DOI (Department of the Interior)	$38,438	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #80 in FY2025; new.
88	VSE Corporation Top agencies DLA (Defense Logistics Agency)	$37,344	0.1%	Rank history: not on the FY2021 list, #36 in FY2022 and not on the FY2024–FY2025 lists; down 52 since FY2022.
89	Martin Military Inc. Top agencies DLA (Defense Logistics Agency)	$35,830	0.1%	Rank history: #22 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 35 since FY2022.
90	Cepeda Associates, Inc. Top agencies DLA (Defense Logistics Agency)	$35,314	0.1%	Rank history: #96 in FY2021, not on the FY2022 list, #61 in FY2024 and #40 in FY2025; returned.
91	Bay Associates Group LLC Top agencies SSA (Social Security Administration) Smithsonian (Smithsonian Institution)	$35,305	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
92	Statz Corp Top agencies DLA (Defense Logistics Agency)	$34,436	0.1%	Rank history: #71 in FY2021, #48 in FY2022 and not on the FY2024–FY2025 lists; down 44 since FY2022.
93	National Material Supply Company, LLC Top agencies DLA (Defense Logistics Agency)	$33,922	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
94	Redorange LLC Top agencies DOS (Department of State)	$32,855	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
95	H C Merchandisers, Inc. Top agencies DLA (Defense Logistics Agency)	$30,887	0.1%	Rank history: not on the FY2021 list, #32 in FY2022 and not on the FY2024–FY2025 lists; down 63 since FY2022.
96	RWC Group, LLC Top agencies USAF (Department of the Air Force)	$30,829	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
97	Heat Energy Systems Company, Inc. Top agencies VA (Department of Veterans Affairs)	$30,692	0.1%	Rank history: not on the FY2021 list, #37 in FY2022 and not on the FY2024–FY2025 lists; down 60 since FY2022.
98	Hitachi, Ltd. Through Hitachi Energy USA Inc. Top agencies DOE (Department of Energy)	$30,330	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
99	Pace Supply Corp. Top agencies DOJ (Department of Justice)	$30,081	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
100	Mooweep LLC Top agencies DOI (Department of the Interior)	$29,700	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.

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100 of 220 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 $40.8 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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 4520 contractors in FY2023?

1. Hunter Defense Technolog ($11.9M), 2. Windward Enterprises, LLC ($6.22M), 3. Argo Turboserve Corporation ($1.61M), 4. Electric Heater Company the ($1.55M), 5. Kampi Components Co Inc. ($1.2M), 6. Lockheed Martin Corporation ($1.15M), 7. Boneal, Incorporated ($998K), 8. Advanced Products Services Inc. ($803K), 9. Talen Energy Marketing LLC ($630K), 10. MCO Solutions, Inc. ($626K).

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