Top 100 Contractors in NAICS 333618: Other Engine Equipment Manufacturing, FY2021

Name: Top 100 Contractors in NAICS 333618: Other Engine Equipment Manufacturing, FY2021
Creator: GovTribe

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

The top 10 won 62% of FY2021 NAICS 333618 contract dollars

Contract obligations: $338,841,155 Net of deobligations, by contracts coded NAICS 333618
Contractors: 642 Parent companies with an obligation
Largest contractor: Oshkosh Corp $54.1 million, 15.4% 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	Oshkosh Corp 2 awardees, including Oshkosh Defense LLC and JLG Industries, Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$54,132,143	15.4%	Rank history: #14 in FY2022, #12 in FY2023, #10 in FY2024 and #6 in FY2025; up 3 since FY2020.
2	Cummins Inc. 8 awardees Top agencies Army (Department of the Army) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$43,761,405	12.5%	Rank history: #2 in FY2022, #2 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since FY2020.
3	Fairbanks Morse LLC 7 awardees, including Breco International, LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$26,169,474	7.5%	Rank history: #1 in FY2022, #1 in FY2023, #5 in FY2024 and #19 in FY2025; up 9 since FY2020.
4	Textron Inc. 2 awardees, including Bell Textron Inc. and Textron Ground Support Equipment Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$26,069,497	7.4%	Rank history: #77 in FY2022 and not on the FY2023–FY2025 lists; up 6 since FY2020.
5	Caterpillar Inc. 3 awardees, including Carter Machinery Company, Incorporated Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$22,118,378	6.3%	Rank history: #7 in FY2022, #6 in FY2023, #7 in FY2024 and #12 in FY2025; up 1 since FY2020.
6	Fincantieri Marine Systems North America Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$11,395,117	3.2%	Rank history: #12 in FY2022, #10 in FY2023, #30 in FY2024 and not on the FY2025 list; up 27 since FY2020.
7	Am General LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$10,353,355	2.9%	Rank history: #3 in FY2022, #9 in FY2023, #9 in FY2024 and #7 in FY2025; new, not ranked in FY2020.
8	Bollinger Shipyards Inc Through Chand, L.L.C. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security) Navy (Department of the Navy)	$8,141,190	2.3%	Rank history: #8 in FY2022, #8 in FY2023, #45 in FY2024 and not on the FY2025 list; up 10 since FY2020.
9	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$7,928,157	2.3%	Rank history: #31 in FY2022, #11 in FY2023, #15 in FY2024 and #10 in FY2025; up 7 since FY2020.
10	Volkswagen AG 3 awardees, including Everllence Middle East and Africa L.l.c, Everllence Japan Ltd. and Everllence USA Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$7,474,325	2.1%	Rank history: #4 in FY2022, #29 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2020.
11	Rolls-Royce Military Aero Engines Ltd 4 awardees, including Rolls-Royce Solutions America Inc. and Rolls-Royce Marine North America Inc. Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$7,232,396	2.1%	Rank history: #15 in FY2022, #3 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
12	Aero Precision Industries LLC Through Allclear Aerospace & Defense, Inc. Top agencies DLA (Defense Logistics Agency)	$6,681,998	1.9%	Rank history: #45 in FY2022, #60 in FY2023 and not on the FY2024–FY2025 lists; up 89 since FY2020.
13	EOS Inc. 2 awardees, including Sidecar Enterprises Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$6,676,726	1.9%	Rank history: #49 in FY2022, #14 in FY2023, #17 in FY2024 and #4 in FY2025; down 5 since FY2020.
14	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency)	$6,516,741	1.9%	Rank history: #26 in FY2022, #45 in FY2023, #67 in FY2024 and #37 in FY2025; up 3 since FY2020.
15	Bravo, Inc. Top agencies VA (Department of Veterans Affairs)	$6,211,279	1.8%	Rank history: #11 in FY2022, not on the FY2023 list, #14 in FY2024 and #15 in FY2025; up 25 since FY2020.
16	Wartsila Defense Inc. Through Defense Maritime Solutions, Inc. Top agencies Navy (Department of the Navy)	$4,258,964	1.2%	Rank history: #9 in FY2022, #5 in FY2023, #35 in FY2024 and not on the FY2025 list; up 4 since FY2020.
17	Pacific Power Group LLC Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) Army (Department of the Army)	$3,959,865	1.1%	Rank history: #5 in FY2022, #16 in FY2023, #12 in FY2024 and #20 in FY2025; up 10 since FY2020.
18	W. W. Williams Company LLC the 6 awardees, including The W.w. Williams Company, LLC Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$3,778,439	1.1%	Rank history: #10 in FY2022, #51 in FY2023, #28 in FY2024 and not on the FY2025 list; up 5 since FY2020.
19	Melton Sales & Service Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$3,299,520	0.9%	Rank history: #16 in FY2022, #22 in FY2023, #25 in FY2024 and #25 in FY2025; up 2 since FY2020.
20	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency)	$2,813,863	0.8%	Rank history: #73 in FY2022, #40 in FY2023, #86 in FY2024 and #27 in FY2025; up 8 since FY2020.
21	Johnson & Towers Inc. 2 awardees, including Western Branch Diesel, LLC Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,519,028	0.7%	Rank history: #17 in FY2022, #18 in FY2023 and not on the FY2024–FY2025 lists; up 28 since FY2020.
22	Brighton Cromwell LLC Top agencies DLA (Defense Logistics Agency)	$2,259,999	0.6%	Rank history: not on the FY2022–FY2025 lists; down 9 since FY2020.
23	Thrustmaster of Texas, Inc. Top agencies DHS (Department of Homeland Security)	$1,863,324	0.5%	Rank history: #34 in FY2022, #27 in FY2023, #32 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
24	Clarke Power Services, Inc. Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency) Army (Department of the Army)	$1,721,993	0.5%	Rank history: not on the FY2022 list, #76 in FY2023, #91 in FY2024 and not on the FY2025 list; up 7 since FY2020.
25	Puckett Machinery Company Top agencies Commerce (Department of Commerce) DHS (Department of Homeland Security)	$1,562,889	0.4%	Rank history: not on the FY2022–FY2025 lists; up 28 since FY2020.
26	Central Florida Yamaha Inc. Top agencies Navy (Department of the Navy) DOI (Department of the Interior) Army (Department of the Army)	$1,474,154	0.4%	Rank history: #27 in FY2022, #62 in FY2023, #66 in FY2024 and #66 in FY2025; up 11 since FY2020.
27	Federal Contracts LLC Top agencies VA (Department of Veterans Affairs)	$1,350,575	0.4%	Rank history: #32 in FY2022, #24 in FY2023, #33 in FY2024 and #31 in FY2025; down 5 since FY2020.
28	Ohio Machinery Co Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$1,332,230	0.4%	Rank history: #21 in FY2022, #23 in FY2023, #31 in FY2024 and #75 in FY2025; up 14 since FY2020.
29	Toromont Industries Ltd Top agencies DOT (Department of Transportation)	$1,331,653	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
30	Penn Detroit Diesel Allison LLC Through Penn Power Group LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,286,486	0.4%	Rank history: #24 in FY2022, #39 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2020.
31	Fluid Mechanics LLC Top agencies DLA (Defense Logistics Agency)	$1,220,932	0.3%	Rank history: #100 in FY2022 and not on the FY2023–FY2025 lists; up 97 since FY2020.
32	Freightliner of Savannah, Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$1,031,155	0.3%	Rank history: #52 in FY2022, #63 in FY2023, #37 in FY2024 and #43 in FY2025; down 7 since FY2020.
33	Donovan Marine, Inc. Top agencies DOS (Department of State)	$980,982	0.3%	Rank history: not on the FY2022–FY2025 lists; up 118 since FY2020.
34	Stauffer Diesel, Inc. Top agencies USAF (Department of the Air Force)	$966,240	0.3%	Rank history: #72 in FY2022 and not on the FY2023–FY2025 lists; up 78 since FY2020.
35	Tecmotiv Corporation Through Tecmotiv (Usa), Inc. Top agencies DLA (Defense Logistics Agency)	$943,647	0.3%	Rank history: #42 in FY2022, #97 in FY2023 and not on the FY2024–FY2025 lists; down 24 since FY2020.
36	PCX Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$943,420	0.3%	Rank history: not on the FY2022–FY2025 lists; up 50 since FY2020.
37	Aero-Glen International LLC Top agencies Army (Department of the Army)	$865,917	0.2%	Rank history: #86 in FY2022 and not on the FY2023–FY2025 lists; up 29 since FY2020.
38	Essex Electro Engineers Inc. Top agencies USAF (Department of the Air Force)	$817,000	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
39	Northrop Grumman Corporation 2 awardees, including Northrop Grumman Systems Corporation Top agencies Navy (Department of the Navy)	$752,352	0.2%	Rank history: not on the FY2022–FY2023 lists, #85 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
40	Technology Fabricators, Inc. Top agencies DLA (Defense Logistics Agency)	$741,029	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
41	ABB Inc. 2 awardees Top agencies DOT (Department of Transportation) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$694,874	0.2%	Rank history: not on the FY2022–FY2025 lists; up 147 since FY2020.
42	Allied Marine Services LLC 2 awardees, including Environmental Systems LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$684,430	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
43	The Boeing Company 4 awardees, including Boeing Distribution Services Defense LLC, Boeing Distribution, Inc. and Boeing Distribution Services X, Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$675,982	0.2%	Rank history: #75 in FY2022 and not on the FY2023–FY2025 lists; up 54 since FY2020.
44	General Motors Company Top agencies DLA (Defense Logistics Agency)	$662,887	0.2%	Rank history: #53 in FY2022 and not on the FY2023–FY2025 lists; up 108 since FY2020.
45	Lynn Electronics LLC Top agencies DLA (Defense Logistics Agency)	$645,540	0.2%	Rank history: #40 in FY2022 and not on the FY2023–FY2025 lists; up 6 since FY2020.
46	Central Power Systems & Services, LLC Top agencies DLA (Defense Logistics Agency) HHS (Department of Health and Human Services) DOJ (Department of Justice)	$643,869	0.2%	Rank history: #33 in FY2022, #34 in FY2023, #44 in FY2024 and #23 in FY2025; up 1 since FY2020.
47	Westbase Inc Through Phaostron Instrument and Electronic Company Top agencies DLA (Defense Logistics Agency)	$612,555	0.2%	Rank history: #47 in FY2022, not on the FY2023 list, #61 in FY2024 and #85 in FY2025; up 5 since FY2020.
48	Southern Automotive Wholesalers, Inc. Top agencies DLA (Defense Logistics Agency)	$608,665	0.2%	Rank history: #36 in FY2022, #36 in FY2023, #50 in FY2024 and #70 in FY2025; up 34 since FY2020.
49	Ross Equipment Inc. Top agencies DLA (Defense Logistics Agency)	$599,795	0.2%	Rank history: #91 in FY2022 and not on the FY2023–FY2025 lists; up 41 since FY2020.
50	Ruta Supplies Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$579,844	0.2%	Rank history: #22 in FY2022, #54 in FY2023, #77 in FY2024 and #53 in FY2025; up 56 since FY2020.
51	Motor Services Hugo Stamp Inc. 2 awardees Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$579,663	0.2%	Rank history: #83 in FY2022, #20 in FY2023, #63 in FY2024 and #45 in FY2025; up 38 since FY2020.
52	Moog Inc. Top agencies Navy (Department of the Navy)	$567,000	0.2%	Rank history: not on the FY2022–FY2025 lists; up 223 since FY2020.
53	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$559,264	0.2%	Rank history: #67 in FY2022, #74 in FY2023, #89 in FY2024 and #50 in FY2025; up 9 since FY2020.
54	Lake Shore Systems, Inc. 2 awardees Top agencies Navy (Department of the Navy)	$543,125	0.2%	Rank history: not on the FY2022 list, #89 in FY2023 and not on the FY2024–FY2025 lists; up 286 since FY2020.
55	MDF Technologies Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$540,417	0.2%	Rank history: #81 in FY2022 and not on the FY2023–FY2025 lists; up 181 since FY2020.
56	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$528,070	0.2%	Rank history: #19 in FY2022, #37 in FY2023, #34 in FY2024 and #29 in FY2025; down 26 since FY2020.
57	Statz Corp Top agencies DLA (Defense Logistics Agency)	$476,502	0.1%	Rank history: #89 in FY2022 and not on the FY2023–FY2025 lists; up 15 since FY2020.
58	Seaserve LOS Angeles LLC Top agencies DHS (Department of Homeland Security)	$471,940	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
59	BRP US Inc. Top agencies USSOCOM (United States Special Operations Command)	$464,005	0.1%	Rank history: not on the FY2022–FY2025 lists; up 32 since FY2020.
60	The Dewey Electronics Corporation Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$455,133	0.1%	Rank history: not on the FY2022–FY2025 lists; up 75 since FY2020.
61	MTP Drivetrain Services L.L.C. Top agencies Army (Department of the Army)	$449,742	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
62	Quick Start Products & Solutions, Inc. Top agencies DLA (Defense Logistics Agency)	$442,775	0.1%	Rank history: not on the FY2022–FY2025 lists; up 289 since FY2020.
63	Teupen Maschinenbau GMBH Top agencies DOS (Department of State)	$411,879	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
64	Vector Controls Inc. Top agencies DHS (Department of Homeland Security)	$406,424	0.1%	Rank history: #71 in FY2022, #59 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2020.
65	Armfield Incorporated Top agencies Army (Department of the Army)	$386,517	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
66	WKF (Friedman) Enterprises, Inc. 2 awardees Top agencies DLA (Defense Logistics Agency)	$386,150	0.1%	Rank history: not on the FY2022–FY2025 lists; up 14 since FY2020.
67	Atlantic Marine, LLC Top agencies DHS (Department of Homeland Security)	$385,431	0.1%	Rank history: #35 in FY2022, not on the FY2023 list, #26 in FY2024 and #28 in FY2025; up 7 since FY2020.
68	Area Diesel Service Inc. Top agencies DLA (Defense Logistics Agency)	$383,252	0.1%	Rank history: #57 in FY2022, #85 in FY2023, not on the FY2024 list and #76 in FY2025; unchanged since FY2020.
69	Windward Enterprises, LLC Top agencies DLA (Defense Logistics Agency)	$374,097	0.1%	Rank history: #64 in FY2022, #30 in FY2023, #51 in FY2024 and #56 in FY2025; down 31 since FY2020.
70	Augusta Engine Parts, Inc. Top agencies DLA (Defense Logistics Agency)	$373,857	0.1%	Rank history: #94 in FY2022, #50 in FY2023, #64 in FY2024 and not on the FY2025 list; up 23 since FY2020.
71	Echelon Supply and Service, Inc. Top agencies DLA (Defense Logistics Agency)	$371,361	0.1%	Rank history: #44 in FY2022, #81 in FY2023 and not on the FY2024–FY2025 lists; down 8 since FY2020.
72	Talan Industries LLC Top agencies DLA (Defense Logistics Agency)	$370,666	0.1%	Rank history: not on the FY2022–FY2025 lists; up 102 since FY2020.
73	S I T Corporation Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security) Army (Department of the Army)	$355,320	0.1%	Rank history: #30 in FY2022, #43 in FY2023, #47 in FY2024 and #35 in FY2025; down 25 since FY2020.
74	B & H International LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$343,280	0.1%	Rank history: not on the FY2022–FY2025 lists; up 165 since FY2020.
75	Dynamic Air Engineering, Inc. Top agencies DLA (Defense Logistics Agency)	$341,250	0.1%	Rank history: #68 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
76	Industrial Painters Associates and Services Inc. Top agencies Army (Department of the Army) USSOCOM (United States Special Operations Command)	$337,480	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
77	Military Supply Company LLC Top agencies DLA (Defense Logistics Agency)	$333,555	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
78	Vanair Manufacturing Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$323,517	0.1%	Rank history: #78 in FY2022 and not on the FY2023–FY2025 lists; up 69 since FY2020.
79	Quality Refrigeration Company, Inc. 2 awardees Top agencies DLA (Defense Logistics Agency)	$323,390	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
80	Stewart & Stevenson Fdda LLC 5 awardees, including Marine Systems, Inc., Engine Systems, Inc. and Stewart & Stevenson Power Products LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$309,591	0.1%	Rank history: #92 in FY2022 and not on the FY2023–FY2025 lists; down 54 since FY2020.
81	Acme Products & Engineering Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$297,090	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
82	General Dynamics Corporation 3 awardees, including Electric Boat Corporation, General Dynamics Land Systems Inc. and General Dynamics Land Systems - Canada Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$294,836	0.1%	Rank history: #54 in FY2022, #84 in FY2023, #74 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
83	Adams Thermal Systems Inc. Top agencies DLA (Defense Logistics Agency)	$293,502	0.1%	Rank history: #70 in FY2022, not on the FY2023 list, #99 in FY2024 and not on the FY2025 list; up 42 since FY2020.
84	Olympic Controls Corp Top agencies DLA (Defense Logistics Agency)	$289,507	0.1%	Rank history: #59 in FY2022, #65 in FY2023, #54 in FY2024 and #47 in FY2025; up 71 since FY2020.
85	Seahorse Defense Supply, LLC Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$287,268	0.1%	Rank history: not on the FY2022 list, #21 in FY2023 and not on the FY2024–FY2025 lists; up 46 since FY2020.
86	Guardian Systems LLC Top agencies DHS (Department of Homeland Security) Army (Department of the Army) Navy (Department of the Navy)	$285,199	0.1%	Rank history: #51 in FY2022, #56 in FY2023, #71 in FY2024 and not on the FY2025 list; down 28 since FY2020.
87	Central Diesel, Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$283,841	0.1%	Rank history: #37 in FY2022, #79 in FY2023 and not on the FY2024–FY2025 lists; down 27 since FY2020.
88	P & R Trading Incorporated Top agencies DLA (Defense Logistics Agency)	$283,650	0.1%	Rank history: not on the FY2022–FY2025 lists; up 68 since FY2020.
89	Georgia State of Through Georgia Department of Human Services Top agencies DLA (Defense Logistics Agency)	$280,338	0.1%	Rank history: not on the FY2022–FY2025 lists; up 34 since FY2020.
90	Multi-Parts & Services, Inc. Top agencies DHS (Department of Homeland Security)	$270,000	0.1%	Rank history: not on the FY2022–FY2025 lists; up 126 since FY2020.
91	Worldwide Equipment Enterprises Inc. Through Worldwide Equipment Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$268,016	0.1%	Rank history: #74 in FY2022, #31 in FY2023, #57 in FY2024 and not on the FY2025 list; up 201 since FY2020.
92	Janels Industries Inc. Top agencies DLA (Defense Logistics Agency)	$265,334	0.1%	Rank history: #65 in FY2022, not on the FY2023 list, #72 in FY2024 and #88 in FY2025; up 274 since FY2020.
93	Oil States Industries Inc Top agencies Navy (Department of the Navy) Commerce (Department of Commerce)	$261,877	0.1%	Rank history: not on the FY2022 list, #95 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
94	Equipment Parts Sales Top agencies DLA (Defense Logistics Agency)	$260,921	0.1%	Rank history: not on the FY2022–FY2025 lists; up 140 since FY2020.
95	The Entwistle Trust Through The Entwistle Company LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$258,341	0.1%	Rank history: not on the FY2022–FY2025 lists; down 36 since FY2020.
96	Helmut's Marine Service Top agencies DOI (Department of the Interior)	$254,279	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
97	Askew Industrial Corporation Top agencies Navy (Department of the Navy)	$249,545	0.1%	Rank history: not on the FY2022–FY2025 lists; up 76 since FY2020.
98	Integrated Procurement Technologies Top agencies DLA (Defense Logistics Agency)	$243,221	0.1%	Rank history: not on the FY2022–FY2025 lists; up 4 since FY2020.
99	Marvin Engineering Co, Inc. Through Marvin Land Systems, Inc. Top agencies DLA (Defense Logistics Agency)	$239,605	0.1%	Rank history: not on the FY2022–FY2025 lists; up 168 since FY2020.
100	Qual-TEC Management Corp Through Carp Industries Corp Top agencies DLA (Defense Logistics Agency)	$235,129	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.

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100 of 642 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 $351 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 333618 contractors in FY2021?

1. Oshkosh Corp ($54.1M), 2. Cummins Inc. ($43.8M), 3. Fairbanks Morse LLC ($26.2M), 4. Textron Inc. ($26.1M), 5. Caterpillar Inc. ($22.1M), 6. Fincantieri Marine Systems North America Inc. ($11.4M), 7. Am General LLC ($10.4M), 8. Bollinger Shipyards Inc ($8.14M), 9. Jgils, LLC ($7.93M), 10. Volkswagen AG ($7.47M).

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