Top 100 Contractors in PSC 1730: Aircraft Ground Servicing Equipment, FY2021

Name: Top 100 Contractors in PSC 1730: Aircraft Ground Servicing Equipment, FY2021
Creator: GovTribe

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

The top 10 won 55% of FY2021 PSC 1730 contract dollars

Contract obligations: $109,906,077 Net of deobligations, by contracts coded PSC 1730
Contractors: 431 Parent companies with an obligation
Largest contractor: Northrop Grumman Corporation $15.5 million, 12.1% 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	Northrop Grumman Corporation 4 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$15,457,479	12.1%	Rank history: #20 in FY2022, #35 in FY2023, #30 in FY2024 and #19 in FY2025; up 3 since FY2020.
2	Vertex Aerospace LLC Through V2X Aerospace LLC Top agencies Navy (Department of the Navy)	$13,869,239	10.9%	Rank history: not on the FY2022–FY2025 lists; up 5 since FY2020.
3	ATI Engineering Services LLC Top agencies USAF (Department of the Air Force)	$9,690,087	7.6%	Rank history: #2 in FY2022, #15 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
4	Hydraulics International, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$7,491,028	5.9%	Rank history: #4 in FY2022, #4 in FY2023, #25 in FY2024 and #16 in FY2025; up 1 since FY2020.
5	Atap Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) DLA (Defense Logistics Agency)	$6,070,209	4.8%	Rank history: #25 in FY2022, #3 in FY2023, #2 in FY2024 and #9 in FY2025; up 14 since FY2020.
6	Bering Straits Native Corporation Through Bering Global Solutions, LLC Top agencies USAF (Department of the Air Force)	$5,198,246	4.1%	Rank history: #10 in FY2022, not on the FY2023 list, #68 in FY2024 and not on the FY2025 list; up 55 since FY2020.
7	Dutch Valley Supply Co. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$4,176,183	3.3%	Rank history: #7 in FY2022, #12 in FY2023, #9 in FY2024 and #12 in FY2025; down 1 since FY2020.
8	D. Gillette Industrial Service's Inc. Top agencies Navy (Department of the Navy)	$2,685,752	2.1%	Rank history: #34 in FY2022, #70 in FY2023 and not on the FY2024–FY2025 lists; up 28 since FY2020.
9	Peck & Hale, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,645,277	2.1%	Rank history: not on the FY2022 list, #18 in FY2023, #5 in FY2024 and #14 in FY2025; up 21 since FY2020.
10	MCT Industries, Inc. Top agencies USAF (Department of the Air Force)	$2,309,006	1.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
11	Seyer Industries, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,753,647	1.4%	Rank history: #54 in FY2022, #49 in FY2023, #33 in FY2024 and #60 in FY2025; up 11 since FY2020.
12	Diagnostic Solutions International LLC Top agencies DLA (Defense Logistics Agency)	$1,679,290	1.3%	Rank history: not on the FY2022–FY2023 lists, #24 in FY2024 and #17 in FY2025; up 2 since FY2020.
13	Sunbelt Design & Development, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$1,578,040	1.2%	Rank history: #22 in FY2022, #53 in FY2023, #60 in FY2024 and #24 in FY2025; down 5 since FY2020.
14	Parasanti Inc. Top agencies WHS (DOD Washington Headquarters Service)	$1,535,563	1.2%	Rank history: #6 in FY2022, #7 in FY2023, #14 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
15	Moog Inc. 2 awardees, including Moog Controls Limited Top agencies USAF (Department of the Air Force)	$1,252,452	1.0%	Rank history: #52 in FY2022, #17 in FY2023 and not on the FY2024–FY2025 lists; up 158 since FY2020.
16	The Boeing Company 8 awardees, including Boeing Distribution, Inc., Boeing Distribution Services X, Inc. and Insitu, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,220,315	1.0%	Rank history: #21 in FY2022, #43 in FY2023, #39 in FY2024 and #11 in FY2025; up 2 since FY2020.
17	Shield Technologies Corp Top agencies DLA (Defense Logistics Agency)	$1,206,437	0.9%	Rank history: #36 in FY2022, #46 in FY2023, #7 in FY2024 and #29 in FY2025; up 6 since FY2020.
18	Blue Moon Designs, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$1,061,672	0.8%	Rank history: not on the FY2022–FY2023 lists, #88 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
19	Avioss LLC Top agencies Navy (Department of the Navy)	$1,048,085	0.8%	Rank history: not on the FY2022 list, #19 in FY2023, #84 in FY2024 and #48 in FY2025; up 39 since FY2020.
20	X - Sight Systems Ltd Top agencies Navy (Department of the Navy)	$1,046,885	0.8%	Rank history: #30 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
21	General Dynamics Corporation Through General Dynamics-Ots, Inc. Top agencies DLA (Defense Logistics Agency)	$1,029,205	0.8%	Rank history: #19 in FY2022, #61 in FY2023, #11 in FY2024 and #25 in FY2025; up 89 since FY2020.
22	Greene Machine & Manufacturing Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$980,506	0.8%	Rank history: #60 in FY2022, #20 in FY2023 and not on the FY2024–FY2025 lists; up 48 since FY2020.
23	Testvonics Inc. Top agencies DHS (Department of Homeland Security)	$960,000	0.8%	Rank history: not on the FY2022–FY2025 lists; down 11 since FY2020.
24	Statz Corp Top agencies DLA (Defense Logistics Agency)	$925,484	0.7%	Rank history: #26 in FY2022, #22 in FY2023, #26 in FY2024 and #76 in FY2025; up 18 since FY2020.
25	Hunter Defense Technolog Through HDT Expeditionary Systems Inc. Top agencies USAF (Department of the Air Force)	$911,962	0.7%	Rank history: not on the FY2022–FY2025 lists; down 22 since FY2020.
26	Epsilon Systems Solutions, Inc. Top agencies Navy (Department of the Navy)	$830,318	0.7%	Rank history: #28 in FY2022 and not on the FY2023–FY2025 lists; up 7 since FY2020.
27	Oscar Deuce LLC Top agencies Army (Department of the Army)	$809,221	0.6%	Rank history: #24 in FY2022, #28 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
28	Nobles Worldwide, Inc. Top agencies DLA (Defense Logistics Agency)	$788,433	0.6%	Rank history: #42 in FY2022, #41 in FY2023 and not on the FY2024–FY2025 lists; up 81 since FY2020.
29	First State Manufacturing Inc. Top agencies DLA (Defense Logistics Agency)	$681,545	0.5%	Rank history: #47 in FY2022 and not on the FY2023–FY2025 lists; up 17 since FY2020.
30	Bell Boeing Joint Project Office Top agencies DLA (Defense Logistics Agency)	$619,274	0.5%	Rank history: #46 in FY2022, #97 in FY2023 and not on the FY2024–FY2025 lists; up 52 since FY2020.
31	Aircraft Covers, Inc. Top agencies DLA (Defense Logistics Agency)	$612,495	0.5%	Rank history: #35 in FY2022, #26 in FY2023, #22 in FY2024 and #30 in FY2025; up 13 since FY2020.
32	Incoimbra LDA Through Oreyeon, LDA Top agencies WHS (DOD Washington Headquarters Service)	$594,659	0.5%	Rank history: #32 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
33	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency)	$583,119	0.5%	Rank history: #76 in FY2022, #66 in FY2023, #91 in FY2024 and #47 in FY2025; up 22 since FY2020.
34	Choctaw Nation of Oklahoma Through Choctaw Defense Manufacturing LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$581,377	0.5%	Rank history: #11 in FY2022, #10 in FY2023, #6 in FY2024 and not on the FY2025 list; up 22 since FY2020.
35	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency)	$564,037	0.4%	Rank history: #99 in FY2022, not on the FY2023 list, #98 in FY2024 and not on the FY2025 list; up 236 since FY2020.
36	Davis Aircraft Products Co., Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$554,593	0.4%	Rank history: #33 in FY2022, #60 in FY2023, #15 in FY2024 and #41 in FY2025; up 7 since FY2020.
37	Kennon Products Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$549,933	0.4%	Rank history: #31 in FY2022, #39 in FY2023, #21 in FY2024 and #23 in FY2025; up 1 since FY2020.
38	Parts Life Inc. 2 awardees, including Deval Life Cycle Support LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$529,432	0.4%	Rank history: #13 in FY2022, not on the FY2023 list, #65 in FY2024 and not on the FY2025 list; up 50 since FY2020.
39	Rolin Industries Inc. Top agencies DLA (Defense Logistics Agency)	$516,708	0.4%	Rank history: not on the FY2022–FY2025 lists; down 14 since FY2020.
40	CV International, Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$512,446	0.4%	Rank history: #72 in FY2022, #48 in FY2023 and not on the FY2024–FY2025 lists; down 14 since FY2020.
41	Airbus Americas Inc. Through Airbus Helicopters, Inc. Top agencies DHS (Department of Homeland Security)	$502,754	0.4%	Rank history: #44 in FY2022, #68 in FY2023 and not on the FY2024–FY2025 lists; up 42 since FY2020.
42	Spika Design & Manufacturing, Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$485,474	0.4%	Rank history: #74 in FY2022, not on the FY2023 list, #42 in FY2024 and #51 in FY2025; down 3 since FY2020.
43	Newview Oklahoma, Inc. Top agencies DLA (Defense Logistics Agency)	$455,975	0.4%	Rank history: #27 in FY2022, #24 in FY2023, #35 in FY2024 and #27 in FY2025; down 6 since FY2020.
44	Simpson Alloy Services Inc. Top agencies USAF (Department of the Air Force)	$447,428	0.4%	Rank history: not on the FY2022–FY2025 lists; up 5 since FY2020.
45	FAST Global Solutions Inc. Top agencies DLA (Defense Logistics Agency)	$417,054	0.3%	Rank history: #41 in FY2022, #40 in FY2023 and not on the FY2024–FY2025 lists; up 82 since FY2020.
46	Mhd-Rockland Inc. Top agencies DLA (Defense Logistics Agency)	$397,860	0.3%	Rank history: not on the FY2022–FY2025 lists; up 132 since FY2020.
47	Brackett Aircraft Company, Inc. Top agencies DLA (Defense Logistics Agency)	$396,102	0.3%	Rank history: #64 in FY2022, #44 in FY2023, #57 in FY2024 and #42 in FY2025; up 12 since FY2020.
48	Weckworth Manufacturing, Inc. Top agencies DLA (Defense Logistics Agency)	$395,967	0.3%	Rank history: #49 in FY2022, #50 in FY2023, #34 in FY2024 and #50 in FY2025; up 28 since FY2020.
49	Garsite Progress, LLC Top agencies DOI (Department of the Interior) DHS (Department of Homeland Security)	$361,438	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
50	Griffon Corporation Through Telephonics Corporation Top agencies DOT (Department of Transportation)	$352,171	0.3%	Rank history: #56 in FY2022 and not on the FY2023–FY2025 lists; down 34 since FY2020.
51	Bestek Industries Inc. Top agencies DLA (Defense Logistics Agency)	$350,481	0.3%	Rank history: #51 in FY2022, #42 in FY2023, #56 in FY2024 and #31 in FY2025; down 10 since FY2020.
52	Apollo Metal Specialties, Inc. Top agencies DLA (Defense Logistics Agency)	$333,512	0.3%	Rank history: not on the FY2022–FY2025 lists; up 168 since FY2020.
53	Safe Structure Designs LLC Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$331,829	0.3%	Rank history: not on the FY2022–FY2025 lists; up 25 since FY2020.
54	R.e. Atckison Co., Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$322,538	0.3%	Rank history: not on the FY2022–FY2024 lists and #44 in FY2025; down 1 since FY2020.
55	Carolina Ground Service Equipment Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$304,843	0.2%	Rank history: not on the FY2022 list, #83 in FY2023 and not on the FY2024–FY2025 lists; up 213 since FY2020.
56	Coating Specialties, Inc. Top agencies DLA (Defense Logistics Agency)	$298,736	0.2%	Rank history: not on the FY2022 list, #77 in FY2023, not on the FY2024 list and #40 in FY2025; down 2 since FY2020.
57	Aero Specialties Inc. Top agencies GSA (General Services Administration) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$285,847	0.2%	Rank history: not on the FY2022–FY2024 lists and #81 in FY2025; down 48 since FY2020.
58	Kunz Corporation Top agencies USAF (Department of the Air Force)	$285,600	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
59	Transdigm Group Incorporated 3 awardees, including Aerocontrolex Group, Inc. and Pneudraulics, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$284,232	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
60	Yama Manufacturing Incorporated Top agencies DLA (Defense Logistics Agency)	$275,152	0.2%	Rank history: #45 in FY2022, #23 in FY2023, #29 in FY2024 and #67 in FY2025; down 29 since FY2020.
61	Twin Services Inc. Top agencies DLA (Defense Logistics Agency)	$246,660	0.2%	Rank history: not on the FY2022–FY2025 lists; up 262 since FY2020.
62	Triverus LLC Top agencies Navy (Department of the Navy)	$246,527	0.2%	Rank history: not on the FY2022–FY2025 lists; down 47 since FY2020.
63	S I T Corporation Top agencies DLA (Defense Logistics Agency)	$239,393	0.2%	Rank history: not on the FY2022–FY2023 lists, #86 in FY2024 and not on the FY2025 list; up 17 since FY2020.
64	Boneal, Incorporated Top agencies USAF (Department of the Air Force)	$237,815	0.2%	Rank history: #43 in FY2022, #14 in FY2023, #10 in FY2024 and #46 in FY2025; up 35 since FY2020.
65	Sssn LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$236,600	0.2%	Rank history: not on the FY2022–FY2025 lists; down 45 since FY2020.
66	KWD Aircraft Support Equipment LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$232,835	0.2%	Rank history: not on the FY2022–FY2024 lists and #78 in FY2025; up 84 since FY2020.
67	Industrial Automation Inc. Top agencies Navy (Department of the Navy)	$231,740	0.2%	Rank history: not on the FY2022–FY2025 lists; down 27 since FY2020.
68	Mobile Technical Systems Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$228,339	0.2%	Rank history: not on the FY2022–FY2025 lists; up 202 since FY2020.
69	RTX Corporation 4 awardees, including Ami Industries, Inc., Goodrich Corporation and Raytheon Company Top agencies DLA (Defense Logistics Agency)	$225,837	0.2%	Rank history: #48 in FY2022 and not on the FY2023–FY2025 lists; down 52 since FY2020.
70	Unimex Corporation Through Paragon Defense Solutions Inc. Top agencies DLA (Defense Logistics Agency)	$225,770	0.2%	Rank history: not on the FY2022–FY2025 lists; down 3 since FY2020.
71	Syn-Tech System, Inc. Top agencies DLA (Defense Logistics Agency)	$223,997	0.2%	Rank history: #16 in FY2022, #52 in FY2023, #23 in FY2024 and #21 in FY2025; down 42 since FY2020.
72	Endicott Precision, Inc. Top agencies DLA (Defense Logistics Agency)	$221,250	0.2%	Rank history: #38 in FY2022, #85 in FY2023, #28 in FY2024 and not on the FY2025 list; up 5 since FY2020.
73	HHI Corporation Top agencies USAF (Department of the Air Force)	$218,885	0.2%	Rank history: not on the FY2022–FY2025 lists; up 11 since FY2020.
74	LSE Associates, Inc. Top agencies DLA (Defense Logistics Agency)	$217,627	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
75	Ruotanen Associates Inc. Top agencies DLA (Defense Logistics Agency)	$210,524	0.2%	Rank history: #58 in FY2022, not on the FY2023 list, #53 in FY2024 and #57 in FY2025; up 185 since FY2020.
76	Spec Tool Company Top agencies DLA (Defense Logistics Agency)	$204,427	0.2%	Rank history: #69 in FY2022 and not on the FY2023–FY2025 lists; down 12 since FY2020.
77	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency)	$198,658	0.2%	Rank history: #29 in FY2022, #81 in FY2023 and not on the FY2024–FY2025 lists; down 50 since FY2020.
78	Tyonek Native Corporatio 4 awardees, including Tfab Defense Systems LLC and Tyonek Fabrication Corporation Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$196,688	0.2%	Rank history: not on the FY2022–FY2025 lists; down 43 since FY2020.
79	Dreamfind, Inc. Top agencies DLA (Defense Logistics Agency)	$180,921	0.1%	Rank history: not on the FY2022–FY2025 lists; up 69 since FY2020.
80	Kit Pack, LLC Top agencies DLA (Defense Logistics Agency)	$176,126	0.1%	Rank history: #55 in FY2022, #56 in FY2023, #72 in FY2024 and #62 in FY2025; down 23 since FY2020.
81	Dms-South / Bailey Tool LLC Top agencies DLA (Defense Logistics Agency)	$161,574	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
82	Survival Innovations, LLC Top agencies USAF (Department of the Air Force)	$160,978	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
83	Bauer, Inc. Top agencies USAF (Department of the Air Force)	$159,146	0.1%	Rank history: not on the FY2022–FY2023 lists, #93 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
84	Jetechnology Solutions Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$158,721	0.1%	Rank history: #83 in FY2022 and not on the FY2023–FY2025 lists; down 19 since FY2020.
85	Military Airlift Experts LLC (Milairx Llc) Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security)	$158,024	0.1%	Rank history: not on the FY2022–FY2025 lists; up 45 since FY2020.
86	Wright Source Inc. Top agencies DLA (Defense Logistics Agency)	$156,655	0.1%	Rank history: not on the FY2022–FY2025 lists; up 130 since FY2020.
87	Aero Manufacturing, L.l.c Top agencies DLA (Defense Logistics Agency)	$155,712	0.1%	Rank history: not on the FY2022–FY2023 lists, #46 in FY2024 and not on the FY2025 list; up 90 since FY2020.
88	General Aviation Industries, Inc. Top agencies DLA (Defense Logistics Agency)	$153,167	0.1%	Rank history: #50 in FY2022, #71 in FY2023, #54 in FY2024 and #61 in FY2025; down 28 since FY2020.
89	Military Supply Company LLC Top agencies DLA (Defense Logistics Agency)	$151,331	0.1%	Rank history: #23 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
90	Lam TEX Composites Inc. Top agencies DLA (Defense Logistics Agency)	$147,840	0.1%	Rank history: not on the FY2022–FY2025 lists; up 141 since FY2020.
91	Manifold & Phalor Inc. Top agencies DLA (Defense Logistics Agency)	$147,638	0.1%	Rank history: not on the FY2022–FY2023 lists, #89 in FY2024 and #79 in FY2025; up 30 since FY2020.
92	Wright & Wright Machinery Co., Inc. Top agencies DOJ (Department of Justice)	$142,019	0.1%	Rank history: not on the FY2022–FY2023 lists, #38 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
93	Towflexx Incorporated Top agencies USAF (Department of the Air Force)	$135,890	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
94	Solair Group, Inc. Top agencies DHS (Department of Homeland Security)	$135,000	0.1%	Rank history: not on the FY2022–FY2025 lists; down 15 since FY2020.
95	Burhani Enterprises Inc. Top agencies DLA (Defense Logistics Agency)	$134,168	0.1%	Rank history: not on the FY2022–FY2025 lists; up 63 since FY2020.
96	Teya Technologies, LLC Top agencies DLA (Defense Logistics Agency)	$133,756	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
97	Honeywell International Inc. Top agencies USAF (Department of the Air Force)	$133,610	0.1%	Rank history: #84 in FY2022, #33 in FY2023, #12 in FY2024 and #69 in FY2025; up 96 since FY2020.
98	Deval Life Cycle Support LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$128,106	0.1%	Rank history: not on the FY2022–FY2023 lists, #19 in FY2024 and #49 in FY2025; new, not ranked in FY2020.
99	Thermodyne International, Ltd Top agencies DLA (Defense Logistics Agency)	$127,150	0.1%	Rank history: not on the FY2022–FY2025 lists; up 44 since FY2020.
100	Hydro Engineering Inc. Top agencies USAF (Department of the Air Force)	$125,354	0.1%	Rank history: #61 in FY2022, #51 in FY2023 and not on the FY2024–FY2025 lists; down 29 since FY2020.

Show 75 more

100 of 431 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 $128 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 1730 contractors in FY2021?

1. Northrop Grumman Corporation ($15.5M), 2. Vertex Aerospace LLC ($13.9M), 3. ATI Engineering Services LLC ($9.69M), 4. Hydraulics International, Inc. ($7.49M), 5. Atap Inc. ($6.07M), 6. Bering Straits Native Corporation ($5.2M), 7. Dutch Valley Supply Co. ($4.18M), 8. D. Gillette Industrial Service's Inc. ($2.69M), 9. Peck & Hale, LLC ($2.65M), 10. MCT Industries, Inc. ($2.31M).

On GovTribe

Research every contractor on this list

Every contract, task order and IDV they hold
Their subsidiaries, teammates and competitors
Open opportunities they're positioned for
Alerts when they win new work

Try for free Login