Top 100 Contractors in NAICS 3336: Engine, Turbine, and Power Transmission Equipment Manufacturing, FY2021

Name: Top 100 Contractors in NAICS 3336: Engine, Turbine, and Power Transmission 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 51% of FY2021 NAICS 3336 contract dollars

Contract obligations: $789,099,793 Net of deobligations, by contracts coded NAICS 3336 or a code under it
Contractors: 1,383 Parent companies with an obligation
Largest contractor: Allison Transmission Inc. $123 million, 14.8% 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	Allison Transmission Inc. Top agencies Army (Department of the Army)	$122,547,843	14.8%	Rank history: #5 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
2	The Timken Company 6 awardees, including Timken Gears & Services Inc. and Cone Drive Operations Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$79,161,485	9.5%	Rank history: #3 in FY2022, #3 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
3	Oshkosh Corp 2 awardees, including Oshkosh Defense LLC and JLG Industries, Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$55,310,018	6.7%	Rank history: #19 in FY2022, #22 in FY2023, #17 in FY2024 and #7 in FY2025; up 2 since FY2020.
4	Cummins Inc. 8 awardees Top agencies Army (Department of the Army) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$43,761,405	5.3%	Rank history: #4 in FY2022, #4 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since FY2020.
5	Textron Inc. 3 awardees, including Bell Textron Inc. and Textron Ground Support Equipment Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$26,116,659	3.1%	Rank history: not on the FY2022–FY2025 lists; up 10 since FY2020.
6	Fairbanks Morse LLC 6 awardees, including Breco International, LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$25,900,240	3.1%	Rank history: #2 in FY2022, #2 in FY2023, #5 in FY2024 and #36 in FY2025; up 13 since FY2020.
7	Caterpillar Inc. 5 awardees, including Carter Machinery Company, Incorporated, Solar Turbines Incorporated and Nippon Caterpillar Llc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$22,222,536	2.7%	Rank history: #14 in FY2022, #16 in FY2023, #8 in FY2024 and #15 in FY2025; up 4 since FY2020.
8	Transdigm Group Incorporated 11 awardees, including Aerocontrolex Group, Inc., Transdigm Inc. and Arkwin Industries, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$16,318,232	2.0%	Rank history: #9 in FY2022, #8 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2020.
9	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$14,906,822	1.8%	Rank history: #13 in FY2022, #23 in FY2023, #18 in FY2024 and #19 in FY2025; up 19 since FY2020.
10	Air New Zealand Engineering Services Top agencies Navy (Department of the Navy)	$13,889,065	1.7%	Rank history: not on the FY2022–FY2025 lists; up 11 since FY2020.
11	Bollinger Shipyards Inc Through Chand, L.L.C. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security) Navy (Department of the Navy)	$12,827,613	1.5%	Rank history: #15 in FY2022, #11 in FY2023 and not on the FY2024–FY2025 lists; up 16 since FY2020.
12	General Electric Company 8 awardees, including GE Renewables US LLC, GE Aviation Systems LLC and Alstom Power Inc. Top agencies DLA (Defense Logistics Agency) DOI (Department of the Interior) Army (Department of the Army)	$12,006,616	1.4%	Rank history: #25 in FY2022, #12 in FY2023, #6 in FY2024 and #48 in FY2025; up 47 since FY2020.
13	Fincantieri Marine Systems North America Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$11,499,424	1.4%	Rank history: #21 in FY2022, #21 in FY2023, #63 in FY2024 and not on the FY2025 list; up 45 since FY2020.
14	Am General LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$11,022,461	1.3%	Rank history: #6 in FY2022, #17 in FY2023, #12 in FY2024 and #9 in FY2025; new, not ranked in FY2020.
15	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) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$9,873,575	1.2%	Rank history: #34 in FY2022, #5 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
16	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$9,302,006	1.1%	Rank history: #40 in FY2022, #19 in FY2023, #20 in FY2024 and #13 in FY2025; up 8 since FY2020.
17	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$7,940,390	1.0%	Rank history: #31 in FY2022, #43 in FY2023, #47 in FY2024 and #41 in FY2025; up 9 since FY2020.
18	Volkswagen AG 5 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)	$7,628,005	0.9%	Rank history: #7 in FY2022, #77 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2020.
19	Transaero, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$7,515,059	0.9%	Rank history: #33 in FY2022, #29 in FY2023, #13 in FY2024 and #54 in FY2025; up 6 since FY2020.
20	Aero Precision Industries LLC 2 awardees, including Allclear Aerospace & Defense, Inc. Top agencies DLA (Defense Logistics Agency)	$6,981,499	0.8%	Rank history: not on the FY2022 list, #78 in FY2023 and not on the FY2024–FY2025 lists; up 199 since FY2020.
21	EOS Inc. 2 awardees, including Sidecar Enterprises Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$6,656,451	0.8%	Rank history: not on the FY2022 list, #27 in FY2023, #31 in FY2024 and #5 in FY2025; down 7 since FY2020.
22	Aarcorp 2 awardees, including AAR Supply Chain, Inc. and AAR Allen Services, Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) USAF (Department of the Air Force)	$6,266,299	0.8%	Rank history: #1 in FY2022, #26 in FY2023, #9 in FY2024 and not on the FY2025 list; down 12 since FY2020.
23	Bravo, Inc. Top agencies VA (Department of Veterans Affairs)	$6,211,279	0.7%	Rank history: #20 in FY2022, not on the FY2023 list, #27 in FY2024 and #21 in FY2025; up 53 since FY2020.
24	Power Rental Asset Co LLC Through APR Energy Usa, LLC Top agencies Navy (Department of the Navy)	$5,718,178	0.7%	Rank history: #32 in FY2022 and not on the FY2023–FY2025 lists; up 10 since FY2020.
25	Government of Canada Through Canadian Commercial Corporation Top agencies Navy (Department of the Navy)	$5,613,505	0.7%	Rank history: #27 in FY2022, #20 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
26	MTU Aero Engines Holding AG 2 awardees, including Vericor Power Systems LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$5,330,660	0.6%	Rank history: #86 in FY2022 and not on the FY2023–FY2025 lists; up 265 since FY2020.
27	Honeywell International Inc. 5 awardees Top agencies DLA (Defense Logistics Agency)	$5,148,353	0.6%	Rank history: #22 in FY2022, #14 in FY2023, #10 in FY2024 and #8 in FY2025; down 18 since FY2020.
28	Wartsila Defense Inc. 2 awardees, including Defense Maritime Solutions, Inc. and American Hydro LLC Top agencies Navy (Department of the Navy) DOI (Department of the Interior)	$4,952,050	0.6%	Rank history: #12 in FY2022, #13 in FY2023, #75 in FY2024 and not on the FY2025 list; up 2 since FY2020.
29	Johnson Controls Security Solutions LLC Through Johnson Controls Navy Systems, LLC Top agencies DLA (Defense Logistics Agency)	$4,359,328	0.5%	Rank history: #16 in FY2022, #53 in FY2023 and not on the FY2024–FY2025 lists; up 28 since FY2020.
30	Melton Sales & Service Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$4,274,152	0.5%	Rank history: #28 in FY2022, #31 in FY2023, #40 in FY2024 and #28 in FY2025; up 1 since FY2020.
31	Rolls Wood Group (Repair & Overhauls) Ltd Through RWG Repair & Overhauls USA Inc. Top agencies Navy (Department of the Navy)	$4,169,077	0.5%	Rank history: #26 in FY2022, #38 in FY2023, #44 in FY2024 and not on the FY2025 list; up 4 since FY2020.
32	Pacific Power Group LLC Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) Army (Department of the Army)	$4,035,202	0.5%	Rank history: #8 in FY2022, #32 in FY2023, #22 in FY2024 and #37 in FY2025; up 11 since FY2020.
33	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency)	$4,025,271	0.5%	Rank history: not on the FY2022 list, #81 in FY2023, not on the FY2024 list and #35 in FY2025; up 4 since FY2020.
34	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)	$3,836,536	0.5%	Rank history: #17 in FY2022, not on the FY2023 list, #59 in FY2024 and not on the FY2025 list; up 6 since FY2020.
35	Tecmotiv Corporation Through Tecmotiv (Usa), Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$3,306,633	0.4%	Rank history: #76 in FY2022 and not on the FY2023–FY2025 lists; down 19 since FY2020.
36	Hackforth Holding GMBH & Co. KG Through American Vulkan Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$3,182,492	0.4%	Rank history: not on the FY2022–FY2025 lists; up 44 since FY2020.
37	U.s.a. Spares Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$3,167,318	0.4%	Rank history: not on the FY2022 list, #99 in FY2023, not on the FY2024 list and #45 in FY2025; up 96 since FY2020.
38	Management Solutions, L.C. Top agencies DLA (Defense Logistics Agency)	$2,895,669	0.3%	Rank history: not on the FY2022–FY2025 lists; up 22 since FY2020.
39	Woodward Governor Company 4 awardees, including Woodward HRT Inc. and Woodward, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,757,064	0.3%	Rank history: not on the FY2022 list, #35 in FY2023, #55 in FY2024 and not on the FY2025 list; up 34 since FY2020.
40	Kongsberg Gruppen ASA 2 awardees, including Kongsberg Maritime Inc. and Kongsberg Defence & Aerospace AS Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$2,642,425	0.3%	Rank history: #47 in FY2022, #69 in FY2023 and not on the FY2024–FY2025 lists; up 48 since FY2020.
41	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)	$2,631,732	0.3%	Rank history: #39 in FY2022, #37 in FY2023 and not on the FY2024–FY2025 lists; up 53 since FY2020.
42	Brighton Cromwell LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$2,620,527	0.3%	Rank history: not on the FY2022–FY2025 lists; down 24 since FY2020.
43	Thomas Instrument, Incorporated Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$2,200,829	0.3%	Rank history: #59 in FY2022, #67 in FY2023 and not on the FY2024–FY2025 lists; up 127 since FY2020.
44	Voith Hydro Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior)	$2,043,833	0.2%	Rank history: #60 in FY2022 and not on the FY2023–FY2025 lists; down 24 since FY2020.
45	Hydraulics International, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,020,688	0.2%	Rank history: #56 in FY2022, #68 in FY2023, not on the FY2024 list and #52 in FY2025; unchanged since FY2020.
46	Jamaica Bearings Co., Inc. 2 awardees Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,003,917	0.2%	Rank history: #52 in FY2022, #55 in FY2023, #42 in FY2024 and #23 in FY2025; up 37 since FY2020.
47	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,000,695	0.2%	Rank history: #41 in FY2022, #34 in FY2023, #37 in FY2024 and #26 in FY2025; up 7 since FY2020.
48	Knight Const. & Supply, Inc. Top agencies Army (Department of the Army)	$1,993,783	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
49	Thrustmaster of Texas, Inc. Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$1,950,262	0.2%	Rank history: #75 in FY2022, #60 in FY2023, #66 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
50	The Charles Schillinger Co., Inc. Top agencies Army (Department of the Army)	$1,937,883	0.2%	Rank history: #55 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
51	Renk Systems Corporation Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$1,935,849	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
52	Ohio Machinery Co Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$1,883,497	0.2%	Rank history: #50 in FY2022, #48 in FY2023, #61 in FY2024 and not on the FY2025 list; up 22 since FY2020.
53	G.s.e. Dynamics, Inc. Top agencies DLA (Defense Logistics Agency)	$1,843,700	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
54	Argo Turboserve Corporation 2 awardees Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,837,451	0.2%	Rank history: #63 in FY2022, #64 in FY2023, #48 in FY2024 and not on the FY2025 list; down 4 since FY2020.
55	W and G Machine Company, Incorporated Top agencies DLA (Defense Logistics Agency)	$1,834,490	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
56	Janels Industries Inc. Top agencies DLA (Defense Logistics Agency)	$1,811,399	0.2%	Rank history: #46 in FY2022, #47 in FY2023, #52 in FY2024 and #83 in FY2025; up 89 since FY2020.
57	Federal Contracts LLC Top agencies VA (Department of Veterans Affairs) DOE (Department of Energy)	$1,774,011	0.2%	Rank history: #72 in FY2022, #49 in FY2023, #78 in FY2024 and #61 in FY2025; down 18 since FY2020.
58	Clarke Power Services, Inc. Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency) Army (Department of the Army)	$1,749,565	0.2%	Rank history: not on the FY2022–FY2025 lists; down 10 since FY2020.
59	VSE Corporation 3 awardees, including Wheeler Fleet Solutions, Co. and VSE Aviation, Inc. Top agencies DLA (Defense Logistics Agency)	$1,697,917	0.2%	Rank history: not on the FY2022–FY2025 lists; up 63 since FY2020.
60	Northrop Grumman Corporation 5 awardees, including Northrop Grumman Systems Corporation and Alliant Techsystems Operations LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,691,815	0.2%	Rank history: not on the FY2022–FY2023 lists, #68 in FY2024 and not on the FY2025 list; down 22 since FY2020.
61	Statz Corp Top agencies DLA (Defense Logistics Agency)	$1,690,081	0.2%	Rank history: #65 in FY2022 and not on the FY2023–FY2025 lists; up 14 since FY2020.
62	Andritz AG Through Andritz Hydro Corp Top agencies DOI (Department of the Interior) Army (Department of the Army)	$1,638,386	0.2%	Rank history: #30 in FY2022, #66 in FY2023 and not on the FY2024–FY2025 lists; up 244 since FY2020.
63	Oceaneering International Inc. Top agencies Navy (Department of the Navy)	$1,574,364	0.2%	Rank history: not on the FY2022–FY2025 lists; up 112 since FY2020.
64	Puckett Machinery Company Top agencies Commerce (Department of Commerce) DHS (Department of Homeland Security)	$1,562,889	0.2%	Rank history: not on the FY2022–FY2025 lists; up 38 since FY2020.
65	Penn Detroit Diesel Allison LLC Through Penn Power Group LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,525,700	0.2%	Rank history: #54 in FY2022, #72 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2020.
66	Advance Development & Manufacturing Corporation Top agencies DLA (Defense Logistics Agency)	$1,484,480	0.2%	Rank history: #42 in FY2022, #39 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2020.
67	Jered LLC Top agencies DLA (Defense Logistics Agency)	$1,477,089	0.2%	Rank history: not on the FY2022 list, #62 in FY2023 and not on the FY2024–FY2025 lists; up 184 since FY2020.
68	Central Florida Yamaha Inc. Top agencies Navy (Department of the Navy) DOI (Department of the Interior) Army (Department of the Army)	$1,474,154	0.2%	Rank history: #61 in FY2022 and not on the FY2023–FY2025 lists; down 3 since FY2020.
69	Graham Corp Through Barber-Nichols, LLC Top agencies Navy (Department of the Navy)	$1,365,292	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
70	Moog Inc. 5 awardees Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$1,337,889	0.2%	Rank history: #38 in FY2022 and not on the FY2023–FY2025 lists; up 46 since FY2020.
71	S I T Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$1,336,864	0.2%	Rank history: #49 in FY2022, #51 in FY2023, #72 in FY2024 and #57 in FY2025; down 10 since FY2020.
72	Toromont Industries Ltd Top agencies DOT (Department of Transportation)	$1,331,653	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
73	Fluid Mechanics LLC Top agencies DLA (Defense Logistics Agency)	$1,220,932	0.1%	Rank history: not on the FY2022–FY2025 lists; up 221 since FY2020.
74	The Boeing Company 7 awardees, including Boeing Distribution Services Defense LLC, Boeing Distribution Services X, Inc. and Boeing Distribution, Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$1,220,579	0.1%	Rank history: not on the FY2022–FY2025 lists; down 38 since FY2020.
75	General Dynamics Corporation 6 awardees, including General Dynamics-Ots, Inc., Electric Boat Corporation and General Dynamics Land Systems - Canada Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,138,173	0.1%	Rank history: #36 in FY2022, #44 in FY2023, #99 in FY2024 and #75 in FY2025; down 19 since FY2020.
76	PCX Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,096,625	0.1%	Rank history: not on the FY2022–FY2025 lists; up 67 since FY2020.
77	Freightliner of Savannah, Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$1,031,155	0.1%	Rank history: not on the FY2022–FY2023 lists, #76 in FY2024 and not on the FY2025 list; down 35 since FY2020.
78	W S Darley & Co Top agencies DLA (Defense Logistics Agency)	$1,016,231	0.1%	Rank history: #68 in FY2022, #96 in FY2023 and not on the FY2024–FY2025 lists; up 27 since FY2020.
79	Environmental Alternatives Inc. Top agencies Navy (Department of the Navy)	$1,010,533	0.1%	Rank history: not on the FY2022–FY2025 lists; up 89 since FY2020.
80	Lake Shore Systems, Inc. 2 awardees Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,004,123	0.1%	Rank history: not on the FY2022–FY2025 lists; up 16 since FY2020.
81	Donovan Marine, Inc. Top agencies DOS (Department of State)	$980,982	0.1%	Rank history: not on the FY2022–FY2025 lists; up 288 since FY2020.
82	Phoenix Trading Inc. Top agencies DLA (Defense Logistics Agency)	$977,743	0.1%	Rank history: #98 in FY2022, #80 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2020.
83	Stauffer Diesel, Inc. Top agencies USAF (Department of the Air Force)	$966,240	0.1%	Rank history: not on the FY2022–FY2025 lists; up 167 since FY2020.
84	Control Products Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$955,743	0.1%	Rank history: not on the FY2022–FY2025 lists; up 233 since FY2020.
85	Dutch Valley Supply Co. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$950,801	0.1%	Rank history: not on the FY2022–FY2024 lists and #79 in FY2025; up 53 since FY2020.
86	Norcatec LLC 2 awardees Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$899,271	0.1%	Rank history: #77 in FY2022, #56 in FY2023, #87 in FY2024 and #60 in FY2025; up 178 since FY2020.
87	Dover Corporation Through Waukesha Bearings Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$876,023	0.1%	Rank history: not on the FY2022–FY2025 lists; up 106 since FY2020.
88	Aero-Glen International LLC Top agencies Army (Department of the Army)	$865,917	0.1%	Rank history: not on the FY2022–FY2025 lists; up 35 since FY2020.
89	Jo-Kell Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$865,179	0.1%	Rank history: #71 in FY2022, not on the FY2023–FY2024 lists and #55 in FY2025; up 181 since FY2020.
90	Signal Engineering Inc. Top agencies DLA (Defense Logistics Agency)	$863,099	0.1%	Rank history: not on the FY2022–FY2025 lists; up 41 since FY2020.
91	MDF Technologies Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$856,685	0.1%	Rank history: not on the FY2022–FY2025 lists; up 106 since FY2020.
92	SAFRAN 5 awardees, including Curtiss-Wright Flow Control Service, LLC, Woodward Canada, Inc. and Safran Power Usa, LLC Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$840,268	0.1%	Rank history: #79 in FY2022 and not on the FY2023–FY2025 lists; up 118 since FY2020.
93	Shapes Group Ltd Co. Top agencies DLA (Defense Logistics Agency)	$824,727	0.1%	Rank history: #97 in FY2022, #83 in FY2023 and not on the FY2024–FY2025 lists; down 26 since FY2020.
94	Essex Electro Engineers Inc. Top agencies USAF (Department of the Air Force)	$817,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
95	PSI Holding Co Through Peaker Services Inc. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$801,961	0.1%	Rank history: not on the FY2022–FY2025 lists; up 322 since FY2020.
96	Echelon Supply and Service, Inc. Top agencies DLA (Defense Logistics Agency)	$763,027	0.1%	Rank history: #66 in FY2022 and not on the FY2023–FY2025 lists; down 28 since FY2020.
97	JA Moody LLC 2 awardees, including ESI Acquisition Corp Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$746,204	0.1%	Rank history: #83 in FY2022 and not on the FY2023–FY2025 lists; up 60 since FY2020.
98	Ruta Supplies Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$744,357	0.1%	Rank history: #44 in FY2022, #65 in FY2023, #73 in FY2024 and #70 in FY2025; up 48 since FY2020.
99	Technology Fabricators, Inc. Top agencies DLA (Defense Logistics Agency)	$741,029	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	Wisconsin Ordnance Works Ltd Top agencies DLA (Defense Logistics Agency)	$739,385	0.1%	Rank history: not on the FY2022–FY2023 lists, #60 in FY2024 and #58 in FY2025; down 38 since FY2020.

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100 of 1,383 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 3336

Code	Net obligations	Largest contractor
33361 Engine, Turbine, and Power Transmission Equipment Manufacturing	$789,099,793	Allison Transmission Inc.

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 $830 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 3336 contractors in FY2021?

1. Allison Transmission Inc. ($123M), 2. The Timken Company ($79.2M), 3. Oshkosh Corp ($55.3M), 4. Cummins Inc. ($43.8M), 5. Textron Inc. ($26.1M), 6. Fairbanks Morse LLC ($25.9M), 7. Caterpillar Inc. ($22.2M), 8. Transdigm Group Incorporated ($16.3M), 9. Kampi Components Co Inc. ($14.9M), 10. Air New Zealand Engineering Services ($13.9M).

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