Top 100 Contractors in NAICS 3323: Architectural and Structural Metals Manufacturing, FY2021

Name: Top 100 Contractors in NAICS 3323: Architectural and Structural Metals Manufacturing, FY2021
Creator: GovTribe

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

The top 10 won 52% of FY2021 NAICS 3323 contract dollars

Contract obligations: $546,025,307 Net of deobligations, by contracts coded NAICS 3323 or a code under it
Contractors: 1,126 Parent companies with an obligation
Largest contractor: Acrow Corporation of America $69.4 million, 12.5% 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	Acrow Corporation of America Top agencies Army (Department of the Army) USDA (Department of Agriculture)	$69,356,248	12.5%	Rank history: #4 in FY2022, not on the FY2023 list, #15 in FY2024 and not on the FY2025 list; up 3 since FY2020.
2	Science Applications International Corporation Through Asrc Federal Facilities Logistics, LLC Top agencies DLA (Defense Logistics Agency)	$53,002,877	9.6%	Rank history: #1 in FY2022, #1 in FY2023, #16 in FY2024 and not on the FY2025 list; up 23 since FY2020.
3	Alfab Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$44,598,851	8.0%	Rank history: #20 in FY2022, #56 in FY2023, #3 in FY2024 and #70 in FY2025; up 3 since FY2020.
4	Elite Aluminum Corp Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$30,244,165	5.5%	Rank history: not on the FY2022 list, #77 in FY2023, not on the FY2024 list and #99 in FY2025; down 2 since FY2020.
5	Acrow Global Limited Top agencies Army (Department of the Army)	$21,221,966	3.8%	Rank history: #5 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
6	General Southern Industries Inc Through G & G Steel Inc. Top agencies Army (Department of the Army)	$16,678,250	3.0%	Rank history: #2 in FY2022, #15 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2020.
7	Kratos Defense & Security Solutions, Inc. Through Gichner Systems Group, Inc. Top agencies Navy (Department of the Navy)	$13,302,976	2.4%	Rank history: #11 in FY2022, #11 in FY2023, #11 in FY2024 and #14 in FY2025; up 36 since FY2020.
8	Miami Technology Solutions, LLC Top agencies Army (Department of the Army)	$13,177,652	2.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
9	Modular Concepts, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$12,547,895	2.3%	Rank history: #54 in FY2022, #58 in FY2023, #41 in FY2024 and #90 in FY2025; up 236 since FY2020.
10	Cass Holdings, LLC Top agencies Navy (Department of the Navy)	$12,327,252	2.2%	Rank history: #10 in FY2022, #10 in FY2023, #20 in FY2024 and #19 in FY2025; up 9 since FY2020.
11	Western Metal Supply Company, Inc. Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) DOI (Department of the Interior)	$11,775,199	2.1%	Rank history: #22 in FY2022, #23 in FY2023, #80 in FY2024 and #40 in FY2025; up 19 since FY2020.
12	Modular Management Group Inc. Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs) Army (Department of the Army)	$10,849,278	2.0%	Rank history: #6 in FY2022, #2 in FY2023, #7 in FY2024 and #9 in FY2025; up 4 since FY2020.
13	Raco Steel Co Top agencies DOJ (Department of Justice)	$7,211,801	1.3%	Rank history: #12 in FY2022, #24 in FY2023, #55 in FY2024 and #34 in FY2025; up 18 since FY2020.
14	Agate Steel Inc. Top agencies USAF (Department of the Air Force)	$7,120,466	1.3%	Rank history: #29 in FY2022 and not on the FY2023–FY2025 lists; up 20 since FY2020.
15	The Boeing Company 6 awardees, including Boeing Distribution Services, Inc., Boeing Distribution Services Defense LLC and Boeing Distribution Services X, Inc. Top agencies DLA (Defense Logistics Agency)	$7,102,357	1.3%	Rank history: #18 in FY2022, #28 in FY2023, #50 in FY2024 and not on the FY2025 list; down 1 since FY2020.
16	Fabritex, Inc. Top agencies Army (Department of the Army)	$6,889,746	1.2%	Rank history: #9 in FY2022, #9 in FY2023, #17 in FY2024 and #24 in FY2025; up 6 since FY2020.
17	Tawreek Dimensions Establishment (Tde) Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$6,647,115	1.2%	Rank history: not on the FY2022–FY2025 lists; up 316 since FY2020.
18	Sanitz Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$6,620,692	1.2%	Rank history: #14 in FY2022, #6 in FY2023, #33 in FY2024 and #48 in FY2025; up 52 since FY2020.
19	Intelligent Waves LLC Top agencies USAF (Department of the Air Force)	$6,438,461	1.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
20	XFS Global, LLC Top agencies Army (Department of the Army) USSOCOM (United States Special Operations Command) USAF (Department of the Air Force)	$6,301,758	1.1%	Rank history: not on the FY2022–FY2025 lists; down 3 since FY2020.
21	Aarcorp 2 awardees, including AAR Manufacturing, Inc. and AAR Supply Chain, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) USSOCOM (United States Special Operations Command)	$6,093,003	1.1%	Rank history: #72 in FY2022, #33 in FY2023 and not on the FY2024–FY2025 lists; up 108 since FY2020.
22	Steward Machine Co Inc. Top agencies Army (Department of the Army)	$5,767,514	1.0%	Rank history: #16 in FY2022, #4 in FY2023, #24 in FY2024 and #22 in FY2025; down 1 since FY2020.
23	The Entwistle Trust 2 awardees, including The Entwistle Company LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$5,502,610	1.0%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
24	Nally & Haydon, LLC Through Armag Corp Top agencies Navy (Department of the Navy) DOJ (Department of Justice) USAF (Department of the Air Force)	$5,049,530	0.9%	Rank history: #15 in FY2022, #12 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2020.
25	K & T Construction and Supply, Inc. Top agencies DISA (Defense Information Systems Agency)	$4,886,028	0.9%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
26	H & G Marine Service Inc. Top agencies DHS (Department of Homeland Security)	$4,474,528	0.8%	Rank history: #13 in FY2022 and not on the FY2023–FY2025 lists; up 10 since FY2020.
27	Big Top Manufacturing LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DOT (Department of Transportation)	$3,935,942	0.7%	Rank history: #48 in FY2022, #43 in FY2023, #30 in FY2024 and #58 in FY2025; up 1 since FY2020.
28	Sustainable Modular Management, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DHS (Department of Homeland Security)	$3,872,126	0.7%	Rank history: #17 in FY2022, #61 in FY2023, #73 in FY2024 and #64 in FY2025; down 23 since FY2020.
29	Strategic Solutions Unlimited, Inc. Top agencies Army (Department of the Army)	$3,037,037	0.5%	Rank history: not on the FY2022–FY2025 lists; down 6 since FY2020.
30	Transco Industries, Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$3,027,437	0.5%	Rank history: not on the FY2022 list, #85 in FY2023, not on the FY2024 list and #65 in FY2025; up 53 since FY2020.
31	Arctic Slope Regional Corporation Through Asrc Federal Facilities Logistics, LLC Top agencies DLA (Defense Logistics Agency)	$2,938,111	0.5%	Rank history: #75 in FY2022, not on the FY2023 list, #6 in FY2024 and not on the FY2025 list; up 172 since FY2020.
32	Pacific Maritime Industries Corp. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$2,707,572	0.5%	Rank history: #31 in FY2022, #36 in FY2023, #67 in FY2024 and #88 in FY2025; up 8 since FY2020.
33	Sea Box, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$2,646,883	0.5%	Rank history: #51 in FY2022, #38 in FY2023 and not on the FY2024–FY2025 lists; up 53 since FY2020.
34	Spees LLC Through Spees-Hernandez JV LLC Top agencies VA (Department of Veterans Affairs)	$2,532,314	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
35	Tarpan Construction, LLC Top agencies Army (Department of the Army)	$2,465,709	0.4%	Rank history: #37 in FY2022 and not on the FY2023–FY2025 lists; up 55 since FY2020.
36	QMF Steel, Inc. Top agencies DOJ (Department of Justice)	$2,402,442	0.4%	Rank history: #56 in FY2022, #75 in FY2023 and not on the FY2024–FY2025 lists; up 41 since FY2020.
37	Cremer Global Services, Incorporated Top agencies Army (Department of the Army)	$2,341,387	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
38	Great Plains Communications LLC Through Strantech LLC Top agencies DISA (Defense Information Systems Agency)	$2,300,683	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
39	Ricardo Perez S.a. Through Greenberry Industrial LLC Top agencies DOI (Department of the Interior)	$2,237,762	0.4%	Rank history: #23 in FY2022, #5 in FY2023, #42 in FY2024 and not on the FY2025 list; up 139 since FY2020.
40	Redguard LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$2,003,922	0.4%	Rank history: not on the FY2022–FY2023 lists, #81 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
41	Marine & Restaurant Fabricators, Inc. Top agencies Navy (Department of the Navy)	$1,949,752	0.4%	Rank history: #47 in FY2022, #26 in FY2023, #39 in FY2024 and #77 in FY2025; down 4 since FY2020.
42	Cbgg JV LLC Top agencies USAID (US Agency for International Development)	$1,947,900	0.4%	Rank history: not on the FY2022–FY2025 lists; down 32 since FY2020.
43	Ralstar Distribution S.R.L. Top agencies USAF (Department of the Air Force)	$1,867,756	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
44	Northbank Civil and Marine, LLC Top agencies Army (Department of the Army)	$1,795,000	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
45	Panel Built PTY Ltd Top agencies Army (Department of the Army)	$1,769,808	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
46	Tri-Way Industries, Inc. Top agencies Navy (Department of the Navy)	$1,736,471	0.3%	Rank history: not on the FY2022–FY2025 lists; up 174 since FY2020.
47	Blue Moon Designs, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$1,736,272	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
48	Fedsource Inc. Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security)	$1,730,302	0.3%	Rank history: #49 in FY2022 and not on the FY2023–FY2025 lists; down 7 since FY2020.
49	Long Wave Inc. Top agencies Navy (Department of the Navy)	$1,658,382	0.3%	Rank history: #46 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
50	Lancs Industries Operating LLC Top agencies Navy (Department of the Navy)	$1,652,007	0.3%	Rank history: not on the FY2022–FY2025 lists; up 145 since FY2020.
51	AKS Industries Inc. Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) USDA (Department of Agriculture)	$1,503,681	0.3%	Rank history: not on the FY2022–FY2025 lists; down 18 since FY2020.
52	Allied Modular Building Systems, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) VA (Department of Veterans Affairs)	$1,419,191	0.3%	Rank history: not on the FY2022–FY2025 lists; up 52 since FY2020.
53	EDL Construction Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$1,374,461	0.2%	Rank history: #64 in FY2022, #16 in FY2023, #8 in FY2024 and not on the FY2025 list; up 132 since FY2020.
54	Prime One Group General Trading and Contracting Company WLL Top agencies USAF (Department of the Air Force)	$1,355,778	0.2%	Rank history: not on the FY2022–FY2025 lists; up 62 since FY2020.
55	BHI Energy I Power Services LLC Top agencies Navy (Department of the Navy)	$1,332,737	0.2%	Rank history: #79 in FY2022 and not on the FY2023–FY2025 lists; up 33 since FY2020.
56	Supplied Industrial Solutions, Inc. Top agencies Army (Department of the Army)	$1,139,133	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
57	Hesco Bastion Inc. 2 awardees Top agencies DLA (Defense Logistics Agency)	$1,106,959	0.2%	Rank history: not on the FY2022–FY2025 lists; down 45 since FY2020.
58	3T Federal Solutions LLC Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency) Army (Department of the Army)	$1,094,936	0.2%	Rank history: not on the FY2022–FY2025 lists; up 94 since FY2020.
59	Kudzu International Incorporated Through Electromet Corporation Top agencies Navy (Department of the Navy)	$1,034,081	0.2%	Rank history: #45 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
60	Pharmix USA LLC Top agencies Army (Department of the Army)	$1,011,426	0.2%	Rank history: not on the FY2022–FY2025 lists; up 148 since FY2020.
61	Squadron Defense Group LLC Top agencies Army (Department of the Army)	$915,250	0.2%	Rank history: #38 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
62	B & H International LLC Top agencies DOE (Department of Energy) Navy (Department of the Navy) DOI (Department of the Interior)	$906,618	0.2%	Rank history: not on the FY2022–FY2025 lists; up 260 since FY2020.
63	Hydro Partners Joint Venture Top agencies Army (Department of the Army)	$900,000	0.2%	Rank history: #24 in FY2022, #51 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
64	Federal Resources Supply Company Top agencies DLA (Defense Logistics Agency)	$895,600	0.2%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
65	Winston-Salem Industries for the Blind Inc. Top agencies USAF (Department of the Air Force)	$887,691	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
66	Pier Side Supply Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$855,625	0.2%	Rank history: #99 in FY2022, #50 in FY2023, #97 in FY2024 and not on the FY2025 list; up 9 since FY2020.
67	Scif Solutions, Inc. Top agencies USAF (Department of the Air Force)	$832,454	0.2%	Rank history: #42 in FY2022 and not on the FY2023–FY2025 lists; down 6 since FY2020.
68	Action Target Inc. Top agencies Army (Department of the Army)	$797,436	0.1%	Rank history: #36 in FY2022 and not on the FY2023–FY2025 lists; down 42 since FY2020.
69	Oxley International Inc. Through Oxley,Inc. Top agencies DLA (Defense Logistics Agency)	$771,070	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
70	Batir Partners JV Top agencies Army (Department of the Army)	$762,622	0.1%	Rank history: #7 in FY2022 and not on the FY2023–FY2025 lists; down 41 since FY2020.
71	Ross Technology Company Top agencies DOS (Department of State)	$752,834	0.1%	Rank history: not on the FY2022–FY2025 lists; up 79 since FY2020.
72	Ceco Environmental Corp Through Peerless MFG Co Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$723,062	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
73	BMS Cat, LLC Top agencies VA (Department of Veterans Affairs)	$720,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
74	Fabrication Products Inc. Top agencies Army (Department of the Army)	$710,354	0.1%	Rank history: not on the FY2022 list, #59 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
75	Armorworks Enterprises Inc. Through Ravelin Defense, Inc. Top agencies DLA (Defense Logistics Agency)	$667,382	0.1%	Rank history: not on the FY2022–FY2025 lists; up 180 since FY2020.
76	California Industrial Facilities Resources, Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$664,977	0.1%	Rank history: not on the FY2022 list, #40 in FY2023, #72 in FY2024 and not on the FY2025 list; down 23 since FY2020.
77	Universal Marine Services Inc. Through UMS Metal Fabricators Inc. Top agencies DHS (Department of Homeland Security)	$655,579	0.1%	Rank history: #65 in FY2022, not on the FY2023 list, #77 in FY2024 and not on the FY2025 list; down 70 since FY2020.
78	Wingate Alloys Inc. Top agencies Army (Department of the Army)	$646,451	0.1%	Rank history: #26 in FY2022, #79 in FY2023, not on the FY2024 list and #16 in FY2025; up 13 since FY2020.
79	Jered LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$639,185	0.1%	Rank history: not on the FY2022–FY2023 lists, #44 in FY2024 and #100 in FY2025; up 161 since FY2020.
80	BAE Systems PLC 2 awardees, including BAE Systems Land & Armaments L.P. Top agencies DLA (Defense Logistics Agency)	$632,030	0.1%	Rank history: not on the FY2022–FY2025 lists; up 66 since FY2020.
81	Proto Labs, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$618,270	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
82	Kwikspace Guam Inc. Top agencies USAF (Department of the Air Force)	$600,000	0.1%	Rank history: #52 in FY2022 and not on the FY2023–FY2025 lists; up 12 since FY2020.
83	Houston-Starr Co Through Houston-Starr Doors, LLC Top agencies WHS (DOD Washington Headquarters Service)	$599,255	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
84	CV International, Inc. Top agencies USAF (Department of the Air Force)	$597,568	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
85	Troop Contracting Inc. Top agencies VA (Department of Veterans Affairs)	$573,100	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
86	Rubb, Inc. Top agencies USSOCOM (United States Special Operations Command) Navy (Department of the Navy) USAF (Department of the Air Force)	$558,580	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
87	PVB Fabrications, Inc. Top agencies USAF (Department of the Air Force)	$542,432	0.1%	Rank history: #66 in FY2022 and not on the FY2023–FY2025 lists; down 23 since FY2020.
88	Cornell-Carr Co., Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$533,362	0.1%	Rank history: #77 in FY2022, #67 in FY2023, #100 in FY2024 and #82 in FY2025; down 17 since FY2020.
89	Choctaw Nation of Oklahoma Through Choctaw Defense Manufacturing LLC Top agencies Navy (Department of the Navy)	$529,342	0.1%	Rank history: #34 in FY2022, #20 in FY2023, #35 in FY2024 and not on the FY2025 list; down 4 since FY2020.
90	Guardian Booth LLC Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$509,201	0.1%	Rank history: not on the FY2022–FY2025 lists; up 221 since FY2020.
91	Boone Steel LLC Top agencies Army (Department of the Army)	$508,577	0.1%	Rank history: not on the FY2022–FY2025 lists; up 43 since FY2020.
92	GAW Associates Inc. Top agencies DOT (Department of Transportation)	$497,976	0.1%	Rank history: #55 in FY2022 and not on the FY2023–FY2025 lists; up 38 since FY2020.
93	Knight Const. & Supply, Inc. Top agencies Army (Department of the Army)	$488,000	0.1%	Rank history: not on the FY2022–FY2025 lists; up 58 since FY2020.
94	Sturm Welding, Inc. Top agencies Army (Department of the Army)	$483,108	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
95	T & T Materials Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior) Navy (Department of the Navy)	$481,540	0.1%	Rank history: not on the FY2022–FY2025 lists; up 82 since FY2020.
96	Blackmon-Mooring Steamatic Cat Through BMS Cat, LLC Top agencies VA (Department of Veterans Affairs)	$479,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
97	Aantilia LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$474,474	0.1%	Rank history: not on the FY2022–FY2025 lists; up 303 since FY2020.
98	Advanced Modular Space Inc. Top agencies USAF (Department of the Air Force) DOI (Department of the Interior) Navy (Department of the Navy)	$470,770	0.1%	Rank history: not on the FY2022–FY2025 lists; up 168 since FY2020.
99	Chickasaw Nation Through CNI Manufacturing, LLC Top agencies DOT (Department of Transportation)	$467,582	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	Solar Mod Systems, Inc. Top agencies Army (Department of the Army)	$465,228	0.1%	Rank history: not on the FY2022–FY2025 lists; up 111 since FY2020.

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100 of 1,126 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 3323

Code	Net obligations	Largest contractor
33231 Plate Work and Fabricated Structural Product Manufacturing	$494,379,805	Acrow Corporation of America
33232 Ornamental and Architectural Metal Products Manufacturing	$51,645,502	Raco Steel Co

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 $554 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 NAICS 3323 contractors in FY2021?

1. Acrow Corporation of America ($69.4M), 2. Science Applications International Corporation ($53M), 3. Alfab Inc. ($44.6M), 4. Elite Aluminum Corp ($30.2M), 5. Acrow Global Limited ($21.2M), 6. General Southern Industries Inc ($16.7M), 7. Kratos Defense & Security Solutions, Inc. ($13.3M), 8. Miami Technology Solutions, LLC ($13.2M), 9. Modular Concepts, Inc. ($12.5M), 10. Cass Holdings, LLC ($12.3M).

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