Top 100 Contractors in NAICS 33231: Plate Work and Fabricated Structural Product Manufacturing, FY2021

Name: Top 100 Contractors in NAICS 33231: Plate Work and Fabricated Structural Product Manufacturing, FY2021
Creator: GovTribe

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

The top 10 won 57% of FY2021 NAICS 33231 contract dollars

Contract obligations: $494,379,805 Net of deobligations, by contracts coded NAICS 33231 or a code under it
Contractors: 795 Parent companies with an obligation
Largest contractor: Acrow Corporation of America $69.4 million, 13.8% 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	13.8%	Rank history: #3 in FY2022, #90 in FY2023, #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)	$52,945,324	10.6%	Rank history: #1 in FY2022, #1 in FY2023, #16 in FY2024 and not on the FY2025 list; up 22 since FY2020.
3	Alfab Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$44,598,851	8.9%	Rank history: #17 in FY2022, #48 in FY2023, #3 in FY2024 and #61 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	6.0%	Rank history: not on the FY2022 list, #63 in FY2023, not on the FY2024 list and #80 in FY2025; down 2 since FY2020.
5	Acrow Global Limited Top agencies Army (Department of the Army)	$21,221,966	4.2%	Rank history: #4 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	3.3%	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	2.7%	Rank history: #10 in FY2022, #11 in FY2023, #11 in FY2024 and #14 in FY2025; up 32 since FY2020.
8	Miami Technology Solutions, LLC Top agencies Army (Department of the Army)	$13,177,652	2.6%	Rank history: not on the FY2022–FY2024 lists and #90 in FY2025; 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	2.5%	Rank history: #45 in FY2022, #49 in FY2023, #39 in FY2024 and #73 in FY2025; up 186 since FY2020.
10	Cass Holdings, LLC Top agencies Navy (Department of the Navy)	$12,327,252	2.5%	Rank history: #9 in FY2022, #10 in FY2023, #20 in FY2024 and #19 in FY2025; up 8 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	2.4%	Rank history: #19 in FY2022, #23 in FY2023, #66 in FY2024 and #35 in FY2025; up 18 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	2.2%	Rank history: #5 in FY2022, #2 in FY2023, #7 in FY2024 and #9 in FY2025; up 3 since FY2020.
13	Agate Steel Inc. Top agencies USAF (Department of the Air Force)	$7,120,466	1.4%	Rank history: #26 in FY2022 and not on the FY2023–FY2025 lists; up 19 since FY2020.
14	Fabritex, Inc. Top agencies Army (Department of the Army)	$6,889,746	1.4%	Rank history: #8 in FY2022, #9 in FY2023, #17 in FY2024 and #23 in FY2025; up 7 since FY2020.
15	Sanitz Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$6,620,692	1.3%	Rank history: #12 in FY2022, #6 in FY2023, #32 in FY2024 and #43 in FY2025; up 46 since FY2020.
16	Intelligent Waves LLC Top agencies USAF (Department of the Air Force)	$6,438,461	1.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
17	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	1.3%	Rank history: not on the FY2022–FY2025 lists; down 1 since FY2020.
18	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)	$6,090,686	1.2%	Rank history: #63 in FY2022, #28 in FY2023 and not on the FY2024–FY2025 lists; up 105 since FY2020.
19	Steward Machine Co Inc. Top agencies Army (Department of the Army)	$5,767,514	1.2%	Rank history: #14 in FY2022, #4 in FY2023, #24 in FY2024 and #22 in FY2025; up 1 since FY2020.
20	The Entwistle Trust Through The Entwistle Company LLC Top agencies Army (Department of the Army)	$5,502,560	1.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
21	Tawreek Dimensions Establishment (Tde) Top agencies OSD (Office of the Secretary of Defense)	$5,328,755	1.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
22	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	1.0%	Rank history: #13 in FY2022, #12 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2020.
23	K & T Construction and Supply, Inc. Top agencies DISA (Defense Information Systems Agency)	$4,886,028	1.0%	Rank history: not on the FY2022–FY2025 lists; up 3 since FY2020.
24	H & G Marine Service Inc. Top agencies DHS (Department of Homeland Security)	$4,474,528	0.9%	Rank history: #11 in FY2022 and not on the FY2023–FY2025 lists; up 10 since FY2020.
25	Big Top Manufacturing LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DOT (Department of Transportation)	$3,935,942	0.8%	Rank history: #41 in FY2022, #36 in FY2023, #29 in FY2024 and #51 in FY2025; up 2 since FY2020.
26	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	0.8%	Rank history: #15 in FY2022, #51 in FY2023, #61 in FY2024 and #56 in FY2025; down 21 since FY2020.
27	Strategic Solutions Unlimited, Inc. Top agencies Army (Department of the Army)	$3,037,037	0.6%	Rank history: not on the FY2022–FY2025 lists; down 5 since FY2020.
28	Transco Industries, Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$3,027,437	0.6%	Rank history: #98 in FY2022, #70 in FY2023, #100 in FY2024 and #57 in FY2025; up 43 since FY2020.
29	Arctic Slope Regional Corporation Through Asrc Federal Facilities Logistics, LLC Top agencies DLA (Defense Logistics Agency)	$2,938,111	0.6%	Rank history: #61 in FY2022, not on the FY2023 list, #6 in FY2024 and not on the FY2025 list; up 133 since FY2020.
30	Sea Box, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$2,646,883	0.5%	Rank history: #43 in FY2022, #32 in FY2023 and not on the FY2024–FY2025 lists; up 44 since FY2020.
31	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.
32	Tarpan Construction, LLC Top agencies Army (Department of the Army)	$2,465,709	0.5%	Rank history: #32 in FY2022 and not on the FY2023–FY2025 lists; up 46 since FY2020.
33	Cremer Global Services, Incorporated Top agencies Army (Department of the Army)	$2,341,387	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
34	Great Plains Communications LLC Through Strantech LLC Top agencies DISA (Defense Information Systems Agency)	$2,300,683	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
35	Ricardo Perez S.a. Through Greenberry Industrial LLC Top agencies DOI (Department of the Interior)	$2,237,762	0.4%	Rank history: #20 in FY2022, #5 in FY2023, #40 in FY2024 and not on the FY2025 list; up 110 since FY2020.
36	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, #67 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
37	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 27 since FY2020.
38	Ralstar Distribution S.R.L. Top agencies USAF (Department of the Air Force)	$1,867,756	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
39	Northbank Civil and Marine, LLC Top agencies Army (Department of the Army)	$1,795,000	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
40	Panel Built PTY Ltd Top agencies Army (Department of the Army)	$1,769,808	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
41	Fedsource Inc. Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security)	$1,730,302	0.3%	Rank history: #42 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
42	Long Wave Inc. Top agencies Navy (Department of the Navy)	$1,658,382	0.3%	Rank history: #40 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
43	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: #86 in FY2022 and not on the FY2023–FY2025 lists; down 12 since FY2020.
44	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–FY2024 lists and #85 in FY2025; up 47 since FY2020.
45	EDL Construction Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$1,374,461	0.3%	Rank history: #51 in FY2022, #16 in FY2023, #8 in FY2024 and not on the FY2025 list; up 106 since FY2020.
46	Prime One Group General Trading and Contracting Company WLL Top agencies USAF (Department of the Air Force)	$1,355,778	0.3%	Rank history: not on the FY2022–FY2025 lists; up 56 since FY2020.
47	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.
48	BHI Energy I Power Services LLC Top agencies Navy (Department of the Navy)	$1,109,224	0.2%	Rank history: #72 in FY2022 and not on the FY2023–FY2025 lists; up 28 since FY2020.
49	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 37 since FY2020.
50	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 78 since FY2020.
51	Pharmix USA LLC Top agencies Army (Department of the Army)	$1,011,426	0.2%	Rank history: not on the FY2022–FY2025 lists; up 115 since FY2020.
52	Squadron Defense Group LLC Top agencies Army (Department of the Army)	$915,250	0.2%	Rank history: #33 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
53	Hydro Partners Joint Venture Top agencies Army (Department of the Army)	$900,000	0.2%	Rank history: #21 in FY2022, #43 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
54	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.
55	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.
56	Scif Solutions, Inc. Top agencies USAF (Department of the Air Force)	$832,454	0.2%	Rank history: #37 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
57	Action Target Inc. Top agencies Army (Department of the Army)	$797,436	0.2%	Rank history: #31 in FY2022 and not on the FY2023–FY2025 lists; down 32 since FY2020.
58	Batir Partners JV Top agencies Army (Department of the Army)	$762,622	0.2%	Rank history: #6 in FY2022 and not on the FY2023–FY2025 lists; down 30 since FY2020.
59	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.
60	Fabrication Products Inc. Top agencies Army (Department of the Army)	$710,354	0.1%	Rank history: not on the FY2022 list, #50 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
61	Ceco Environmental Corp Through Peerless MFG Co Top agencies Navy (Department of the Navy)	$709,312	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
62	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, #34 in FY2023, #60 in FY2024 and not on the FY2025 list; down 14 since FY2020.
63	Universal Marine Services Inc. Through UMS Metal Fabricators Inc. Top agencies DHS (Department of Homeland Security)	$655,579	0.1%	Rank history: #52 in FY2022, #92 in FY2023, #64 in FY2024 and not on the FY2025 list; down 56 since FY2020.
64	B & H International LLC Top agencies DOE (Department of Energy) DOI (Department of the Interior) Navy (Department of the Navy)	$649,116	0.1%	Rank history: not on the FY2022–FY2025 lists; up 187 since FY2020.
65	Wingate Alloys Inc. Top agencies Army (Department of the Army)	$646,451	0.1%	Rank history: #23 in FY2022, #65 in FY2023, #83 in FY2024 and #16 in FY2025; up 14 since FY2020.
66	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.
67	Kwikspace Guam Inc. Top agencies USAF (Department of the Air Force)	$600,000	0.1%	Rank history: #44 in FY2022, #96 in FY2023 and not on the FY2024–FY2025 lists; up 15 since FY2020.
68	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.
69	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.
70	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.
71	PVB Fabrications, Inc. Top agencies USAF (Department of the Air Force)	$542,432	0.1%	Rank history: #53 in FY2022, #89 in FY2023 and not on the FY2024–FY2025 lists; down 15 since FY2020.
72	Choctaw Nation of Oklahoma Through Choctaw Defense Manufacturing LLC Top agencies Navy (Department of the Navy)	$529,342	0.1%	Rank history: #30 in FY2022, #20 in FY2023, #34 in FY2024 and not on the FY2025 list; up 1 since FY2020.
73	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 171 since FY2020.
74	Boone Steel LLC Top agencies Army (Department of the Army)	$508,577	0.1%	Rank history: #82 in FY2022, #95 in FY2023 and not on the FY2024–FY2025 lists; up 41 since FY2020.
75	GAW Associates Inc. Top agencies DOT (Department of Transportation)	$497,976	0.1%	Rank history: #46 in FY2022 and not on the FY2023–FY2025 lists; up 37 since FY2020.
76	Knight Const. & Supply, Inc. Top agencies Army (Department of the Army)	$488,000	0.1%	Rank history: #91 in FY2022 and not on the FY2023–FY2025 lists; up 51 since FY2020.
77	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.
78	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.
79	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 130 since FY2020.
80	Solar Mod Systems, Inc. Top agencies Army (Department of the Army)	$465,228	0.1%	Rank history: not on the FY2022–FY2025 lists; up 87 since FY2020.
81	Merlin Industries, Inc. Top agencies DLA (Defense Logistics Agency)	$464,835	0.1%	Rank history: not on the FY2022–FY2024 lists and #78 in FY2025; up 23 since FY2020.
82	Astrea General Trading Top agencies USAF (Department of the Air Force)	$439,083	0.1%	Rank history: not on the FY2022–FY2025 lists; up 66 since FY2020.
83	NDL Group Inc. Top agencies USAF (Department of the Air Force)	$437,173	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
84	Theodor Wille Intertrade GMBH Through Atlantic Diving Supply, Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$429,013	0.1%	Rank history: not on the FY2022–FY2025 lists; down 73 since FY2020.
85	Argo Turboserve Corporation Top agencies DLA (Defense Logistics Agency)	$420,065	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
86	Appleton Marine Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$408,454	0.1%	Rank history: not on the FY2022–FY2025 lists; up 130 since FY2020.
87	T & T Materials Inc. Top agencies Army (Department of the Army)	$407,895	0.1%	Rank history: not on the FY2022–FY2025 lists; up 57 since FY2020.
88	AQ Global for General Trading & Contracting Co. W.L.L. Top agencies USAF (Department of the Air Force)	$403,735	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
89	Continental Electronics Corporation Through Safety Storage, Inc. Top agencies Navy (Department of the Navy)	$401,606	0.1%	Rank history: not on the FY2022–FY2025 lists; down 47 since FY2020.
90	Romtec Inc. Top agencies DOI (Department of the Interior) Navy (Department of the Navy)	$398,919	0.1%	Rank history: #93 in FY2022 and not on the FY2023–FY2025 lists; up 48 since FY2020.
91	Ramim Engineering Works Ltd Top agencies Army (Department of the Army)	$389,753	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
92	Aantilia LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$388,571	0.1%	Rank history: not on the FY2022–FY2025 lists; up 247 since FY2020.
93	Main Robert a & Sons Holding Company Inc Through Aluma Tower Company, Inc. Top agencies USAF (Department of the Air Force) Commerce (Department of Commerce)	$384,824	0.1%	Rank history: not on the FY2022–FY2025 lists; up 245 since FY2020.
94	Schwartz Boiler Shop Inc. Top agencies DHS (Department of Homeland Security)	$383,532	0.1%	Rank history: not on the FY2022–FY2025 lists; up 20 since FY2020.
95	Folsom, LLC Top agencies USAF (Department of the Air Force)	$372,338	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
96	Brooks & Perkins, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$363,674	0.1%	Rank history: not on the FY2022–FY2025 lists; up 61 since FY2020.
97	Apex Modular Group LLC Top agencies USAF (Department of the Air Force)	$346,455	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
98	Logis-Tech, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$337,094	0.1%	Rank history: not on the FY2022–FY2025 lists; up 122 since FY2020.
99	Newpark Resources Inc. Through Newpark Mats & Integrated Services LLC Top agencies DLA (Defense Logistics Agency)	$327,827	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	Panel Built Inc. Top agencies DOJ (Department of Justice) USAF (Department of the Air Force)	$324,665	0.1%	Rank history: not on the FY2022–FY2025 lists; down 16 since FY2020.

Show 75 more

100 of 795 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 33231

Code	Net obligations	Largest contractor
332312 Fabricated Structural Metal Manufacturing	$272,653,512	Acrow Corporation of America
332311 Prefabricated Metal Building and Component Manufacturing	$203,744,525	Elite Aluminum Corp
332313 Plate Work Manufacturing	$17,981,767	The Entwistle Trust

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 $501 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 33231 contractors in FY2021?

1. Acrow Corporation of America ($69.4M), 2. Science Applications International Corporation ($52.9M), 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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