Top 100 Contractors in NAICS 3331: Agriculture, Construction, and Mining Machinery Manufacturing, FY2024

Name: Top 100 Contractors in NAICS 3331: Agriculture, Construction, and Mining Machinery Manufacturing, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 68% of FY2024 NAICS 3331 contract dollars

Contract obligations: $1,100,180,779 Net of deobligations, by contracts coded NAICS 3331 or a code under it
Contractors: 602 Parent companies with an obligation
Largest contractor: Caterpillar Inc. $369 million, 32.6% 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	Caterpillar Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) DOI (Department of the Interior)	$369,265,537	32.6%	Rank history: #1 in FY2021, #1 in FY2022, #2 in FY2023 and #1 in FY2025; up 1 since FY2023.
2	American Material Handling, Inc. Top agencies DLA (Defense Logistics Agency) GSA (General Services Administration) Army (Department of the Army)	$73,073,746	6.5%	Rank history: #3 in FY2021, #3 in FY2022, #3 in FY2023 and #3 in FY2025; up 1 since FY2023.
3	Taylor Defense Products, LLC Top agencies Army (Department of the Army)	$71,188,268	6.3%	Rank history: not on the FY2021 list, #2 in FY2022, #4 in FY2023 and #11 in FY2025; up 1 since FY2023.
4	Oshkosh Corporation 4 awardees, including Pierce Manufacturing Inc. and JLG Industries, Inc. Top agencies DLA (Defense Logistics Agency) DOS (Department of State)	$62,402,646	5.5%	Rank history: #9 in FY2021, #13 in FY2022, #13 in FY2023 and #4 in FY2025; up 9 since FY2023.
5	Mack Defense LLC Top agencies DLA (Defense Logistics Agency)	$37,666,351	3.3%	Rank history: not on the FY2021–FY2023 lists and #8 in FY2025; new.
6	JCB Inc. 2 awardees Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$37,325,036	3.3%	Rank history: #2 in FY2021, #4 in FY2022, #5 in FY2023 and #2 in FY2025; down 1 since FY2023.
7	AB Volvo 2 awardees, including Mack Defense LLC Top agencies DLA (Defense Logistics Agency)	$32,940,277	2.9%	Rank history: #10 in FY2021, #6 in FY2022, #1 in FY2023 and not on the FY2025 list; down 6 since FY2023.
8	Hyster-Yale Group, Inc. 2 awardees Top agencies DLA (Defense Logistics Agency)	$32,675,902	2.9%	Rank history: not on the FY2021–FY2022 lists, #9 in FY2023 and #5 in FY2025; up 1 since FY2023.
9	Garsite Progress, LLC Top agencies DLA (Defense Logistics Agency)	$27,135,376	2.4%	Rank history: not on the FY2021 list, #17 in FY2022, #30 in FY2023 and #28 in FY2025; up 21 since FY2023.
10	Navistar International Corporation Through ND Defense LLC Top agencies DLA (Defense Logistics Agency)	$25,846,080	2.3%	Rank history: #27 in FY2021, #16 in FY2022, #11 in FY2023 and not on the FY2025 list; up 1 since FY2023.
11	Skymark Refuelers LLC Top agencies DLA (Defense Logistics Agency)	$19,194,001	1.7%	Rank history: #28 in FY2021, #30 in FY2022, #27 in FY2023 and #61 in FY2025; up 16 since FY2023.
12	REV Group Inc. Through E-One, Inc. Top agencies DLA (Defense Logistics Agency)	$18,138,055	1.6%	Rank history: not on the FY2021–FY2023 lists and #26 in FY2025; new.
13	Seatrax Inc. Top agencies Army (Department of the Army)	$16,643,275	1.5%	Rank history: not on the FY2021–FY2023 lists and #77 in FY2025; new.
14	Certified Stainless Service Inc. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$12,917,839	1.1%	Rank history: #5 in FY2021, #9 in FY2022, #6 in FY2023 and #19 in FY2025; down 8 since FY2023.
15	Deere & Company 3 awardees, including John Deere Shared Services, LLC Top agencies DLA (Defense Logistics Agency) DOI (Department of the Interior) USDA (Department of Agriculture)	$12,863,045	1.1%	Rank history: #8 in FY2021, #5 in FY2022, #8 in FY2023 and #18 in FY2025; down 7 since FY2023.
16	Bagela Usa, LLC Top agencies GSA (General Services Administration)	$12,490,805	1.1%	Rank history: not on the FY2021 list, #21 in FY2022, not on the FY2023 list and #52 in FY2025; returned.
17	Link-Belt Cranes, L.p., LLLP Top agencies DLA (Defense Logistics Agency)	$12,459,753	1.1%	Rank history: #21 in FY2021, not on the FY2022–FY2023 lists and #15 in FY2025; returned.
18	Duco, LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$12,263,937	1.1%	Rank history: not on the FY2021 list, #58 in FY2022, #14 in FY2023 and #13 in FY2025; down 4 since FY2023.
19	Altec Industries, Inc. 2 awardees Top agencies DLA (Defense Logistics Agency) DOJ (Department of Justice)	$12,131,852	1.1%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2025; new.
20	Polaris Inc. Through Polaris Sales Inc. Top agencies DLA (Defense Logistics Agency)	$11,613,297	1.0%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2025; new.
21	John Deere Shared Services, LLC Top agencies DLA (Defense Logistics Agency) DOI (Department of the Interior) Army (Department of the Army)	$10,410,303	0.9%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2025; new.
22	Federal Contracts LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) DOI (Department of the Interior)	$10,328,759	0.9%	Rank history: #11 in FY2021, #15 in FY2022, #16 in FY2023 and #22 in FY2025; down 6 since FY2023.
23	Grove U.S. LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) GSA (General Services Administration)	$10,051,769	0.9%	Rank history: not on the FY2021–FY2023 lists and #12 in FY2025; new.
24	The Manitowoc Company. Inc. Through Grove U.s. LLC Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency) Army (Department of the Army)	$9,800,561	0.9%	Rank history: #6 in FY2021, #7 in FY2022, #7 in FY2023 and not on the FY2025 list; down 17 since FY2023.
25	Bravo, Inc. 2 awardees Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) DOI (Department of the Interior)	$9,589,615	0.8%	Rank history: #13 in FY2021, #10 in FY2022, #15 in FY2023 and #20 in FY2025; down 10 since FY2023.
26	Canadian Commercial Corporation Top agencies DLA (Defense Logistics Agency)	$8,783,574	0.8%	Rank history: not on the FY2021–FY2023 lists and #6 in FY2025; new.
27	Enrgies Inc. Top agencies USAF (Department of the Air Force)	$7,818,880	0.7%	Rank history: #39 in FY2021, #27 in FY2022, #28 in FY2023 and #25 in FY2025; up 1 since FY2023.
28	Advanced Material Handling LLC Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$7,329,499	0.6%	Rank history: #26 in FY2021, #19 in FY2022, #17 in FY2023 and #17 in FY2025; down 11 since FY2023.
29	Aviate Enterprises, Inc. Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) USAF (Department of the Air Force)	$5,182,233	0.5%	Rank history: #19 in FY2021, #23 in FY2022, #22 in FY2023 and #29 in FY2025; down 7 since FY2023.
30	The Akana Group Inc. Top agencies DOI (Department of the Interior) HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$4,968,414	0.4%	Rank history: #25 in FY2021, #24 in FY2022, #19 in FY2023 and #96 in FY2025; down 11 since FY2023.
31	Government of Canada Through Canadian Commercial Corporation Top agencies DLA (Defense Logistics Agency)	$4,373,847	0.4%	Rank history: #15 in FY2021, #18 in FY2022, #26 in FY2023 and not on the FY2025 list; down 5 since FY2023.
32	Volkswagen Aktiengesellschaft Through ND Defense LLC Top agencies DLA (Defense Logistics Agency)	$4,046,091	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
33	JLG Industries, Inc. Top agencies DLA (Defense Logistics Agency)	$3,847,347	0.3%	Rank history: not on the FY2021 list, #35 in FY2022, not on the FY2023 list and #21 in FY2025; returned.
34	Huntsville Tractor & Equipment Inc. Top agencies USAF (Department of the Air Force) DOI (Department of the Interior) VA (Department of Veterans Affairs)	$3,482,986	0.3%	Rank history: #30 in FY2021, #25 in FY2022, #21 in FY2023 and #27 in FY2025; down 13 since FY2023.
35	Transcentury Associates Inc. Top agencies USAID (US Agency for International Development)	$3,198,523	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
36	Maryland Industrial Trucks, Incorporated Top agencies DLA (Defense Logistics Agency)	$3,117,827	0.3%	Rank history: #31 in FY2021, #40 in FY2022, #82 in FY2023 and #46 in FY2025; up 46 since FY2023.
37	Worldwide Enterprises Inc. Through Worldwide Enterprise, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$3,007,924	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 177 since FY2023.
38	Allied Systems Company Top agencies DHS (Department of Homeland Security)	$2,634,000	0.2%	Rank history: not on the FY2021–FY2023 lists and #45 in FY2025; up 448 since FY2023.
39	Kaufman Trailers, LLC Top agencies DLA (Defense Logistics Agency)	$2,451,743	0.2%	Rank history: not on the FY2021–FY2023 lists and #53 in FY2025; new.
40	Proall International Mfg. Inc. Top agencies GSA (General Services Administration)	$2,286,600	0.2%	Rank history: #20 in FY2021, #22 in FY2022, #38 in FY2023 and #35 in FY2025; down 2 since FY2023.
41	Independent Rough Terrain Center LLC Top agencies DLA (Defense Logistics Agency)	$2,174,097	0.2%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2025; new.
42	Mooweep LLC Top agencies DOI (Department of the Interior) HHS (Department of Health and Human Services)	$2,159,157	0.2%	Rank history: #47 in FY2021, #64 in FY2022, #40 in FY2023 and not on the FY2025 list; down 2 since FY2023.
43	Tucker Sno-Cat Corporation Top agencies DLA (Defense Logistics Agency)	$2,095,019	0.2%	Rank history: not on the FY2021–FY2023 lists and #48 in FY2025; new.
44	M-B Companies, Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$2,046,381	0.2%	Rank history: #64 in FY2021, not on the FY2022–FY2023 lists and #9 in FY2025; returned.
45	Alden Equipment, Inc. Top agencies DLA (Defense Logistics Agency)	$1,961,342	0.2%	Rank history: not on the FY2021–FY2022 lists, #34 in FY2023 and #73 in FY2025; down 11 since FY2023.
46	Plasser & Theurer Beteiligungs- UND Verwaltungsgesellschaft M.B.H. Through Plasser American Corporation Top agencies DOT (Department of Transportation)	$1,689,654	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
47	Gaithersburg Farmers Supply, Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$1,650,005	0.1%	Rank history: #52 in FY2021, #48 in FY2022, #36 in FY2023 and #23 in FY2025; down 11 since FY2023.
48	Landoll Company, LLC Top agencies DLA (Defense Logistics Agency)	$1,598,237	0.1%	Rank history: #76 in FY2021, not on the FY2022–FY2023 lists and #31 in FY2025; up 76 since FY2023.
49	Amigo Implement Company, Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) DOI (Department of the Interior)	$1,331,555	0.1%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2023 and #62 in FY2025; up 23 since FY2023.
50	Wilco Manufacturing L.L.C. Top agencies DOI (Department of the Interior)	$1,289,500	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
51	Globex Corp Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$1,240,015	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
52	Aantilia LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USDA (Department of Agriculture)	$1,217,687	0.1%	Rank history: #94 in FY2021, #41 in FY2022, #42 in FY2023 and #39 in FY2025; down 10 since FY2023.
53	TSR Solutions LLC Top agencies DOI (Department of the Interior)	$1,071,999	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
54	Dabb & Co Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior) USDA (Department of Agriculture)	$963,393	0.1%	Rank history: not on the FY2021 list, #53 in FY2022, #87 in FY2023 and not on the FY2025 list; up 33 since FY2023.
55	C-Lock, Inc. Top agencies USDA (Department of Agriculture)	$933,830	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
56	San Diego Seal Inc. Top agencies DLA (Defense Logistics Agency)	$891,267	0.1%	Rank history: not on the FY2021–FY2022 lists, #31 in FY2023 and #79 in FY2025; down 25 since FY2023.
57	Altec Inc. Through Altec Industries, Inc. Top agencies DLA (Defense Logistics Agency)	$864,916	0.1%	Rank history: not on the FY2021 list, #49 in FY2022, #64 in FY2023 and not on the FY2025 list; up 7 since FY2023.
58	Wagner Equipment Co Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$853,135	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
59	Air Burners, Inc. Top agencies USDA (Department of Agriculture) DOE (Department of Energy) Army (Department of the Army)	$773,373	0.1%	Rank history: #83 in FY2021, not on the FY2022 list, #51 in FY2023 and not on the FY2025 list; down 8 since FY2023.
60	Volker Wetzel Wetzel Land- UND Gartentechnik Top agencies USAF (Department of the Air Force)	$760,269	0.1%	Rank history: not on the FY2021–FY2023 lists and #84 in FY2025; up 306 since FY2023.
61	Clay Contracting LLC Top agencies Army (Department of the Army)	$758,856	0.1%	Rank history: not on the FY2021–FY2023 lists and #67 in FY2025; new.
62	Eagle Safe Surfaces Colorado Inc. Top agencies USAF (Department of the Air Force)	$717,006	0.1%	Rank history: not on the FY2021 list, #45 in FY2022, #44 in FY2023 and #47 in FY2025; down 18 since FY2023.
63	Mil Serve International Inc. Top agencies Army (Department of the Army)	$697,266	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 133 since FY2023.
64	Marotta Controls Inc. Top agencies DLA (Defense Logistics Agency)	$687,497	0.1%	Rank history: not on the FY2021 list, #94 in FY2022, #57 in FY2023 and #85 in FY2025; down 7 since FY2023.
65	Tymco, Inc. Top agencies Army (Department of the Army)	$660,611	0.1%	Rank history: #46 in FY2021, #31 in FY2022, not on the FY2023 list and #74 in FY2025; returned.
66	Sawtooth Industrial LLC Top agencies DOI (Department of the Interior)	$632,168	0.1%	Rank history: not on the FY2021–FY2023 lists and #41 in FY2025; up 211 since FY2023.
67	North Pole Equipment Rentals LLC Top agencies DOI (Department of the Interior)	$604,271	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
68	Kincaid Equipment Manufacturing, Inc. Top agencies USDA (Department of Agriculture)	$535,295	<0.1%	Rank history: not on the FY2021 list, #57 in FY2022, #90 in FY2023 and not on the FY2025 list; up 22 since FY2023.
69	Central Mine Equipment Company Top agencies Army (Department of the Army)	$534,685	<0.1%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2023 and not on the FY2025 list; down 9 since FY2023.
70	Kingline Equipment Inc. Top agencies USDA (Department of Agriculture) Army (Department of the Army) USAF (Department of the Air Force)	$529,466	<0.1%	Rank history: not on the FY2021–FY2022 lists, #85 in FY2023 and not on the FY2025 list; up 15 since FY2023.
71	Wintersteiger Inc. Top agencies USDA (Department of Agriculture)	$505,020	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
72	Boulware Equipment, LLC Top agencies Army (Department of the Army)	$498,340	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
73	Gary W Clem Inc. Top agencies USDA (Department of Agriculture)	$485,111	<0.1%	Rank history: #48 in FY2021, #43 in FY2022, #39 in FY2023 and #69 in FY2025; down 34 since FY2023.
74	Cargotec OYJ Through Independent Rough Terrain Center LLC Top agencies DLA (Defense Logistics Agency)	$482,007	<0.1%	Rank history: #40 in FY2021, #26 in FY2022, #29 in FY2023 and not on the FY2025 list; down 45 since FY2023.
75	Consorcio Gasolinero Plus Top agencies DOS (Department of State)	$476,120	<0.1%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023 and not on the FY2025 list; up 6 since FY2023.
76	FSR Consulting LLC Top agencies USAF (Department of the Air Force) USDA (Department of Agriculture)	$474,080	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 117 since FY2023.
77	Zelpha LLC Top agencies Army (Department of the Army)	$455,308	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
78	Earle Kinlaw & Associates, Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior) USDA (Department of Agriculture)	$445,658	<0.1%	Rank history: #22 in FY2021, #29 in FY2022, #46 in FY2023 and #78 in FY2025; down 32 since FY2023.
79	Alfred Pillokat AP Bau-Und Industrieausruestung Top agencies Army (Department of the Army)	$435,557	<0.1%	Rank history: not on the FY2021 list, #61 in FY2022, #71 in FY2023 and not on the FY2025 list; down 8 since FY2023.
80	Crown Equipment Corp Top agencies DLA (Defense Logistics Agency)	$429,141	<0.1%	Rank history: not on the FY2021–FY2023 lists and #63 in FY2025; new.
81	Rkj, LLC Top agencies USDA (Department of Agriculture)	$426,795	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	Globe Trailer Manufacturing, Inc. Top agencies DLA (Defense Logistics Agency)	$409,506	<0.1%	Rank history: #7 in FY2021, #12 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
83	Aebi Schmidt Deutschland GMBH Through M-B Companies, Inc. Top agencies DLA (Defense Logistics Agency)	$404,363	<0.1%	Rank history: #17 in FY2021, #39 in FY2022, #18 in FY2023 and not on the FY2025 list; down 65 since FY2023.
84	Alltrack Inc. Top agencies DOI (Department of the Interior)	$387,376	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
85	Paula F Price Enterprises LLC Top agencies VA (Department of Veterans Affairs)	$386,677	<0.1%	Rank history: not on the FY2021 list, #47 in FY2022, not on the FY2023 list and #57 in FY2025; returned.
86	BIV Bau- UND Industriegeraete Vertriebs-Gmbh Top agencies Army (Department of the Army)	$385,679	<0.1%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2023 and not on the FY2025 list; down 9 since FY2023.
87	Nilfisk Inc. Top agencies DLA (Defense Logistics Agency)	$374,077	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 63 since FY2023.
88	Hocoka Holdings LLC Top agencies HHS (Department of Health and Human Services) DOI (Department of the Interior)	$371,445	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 15 since FY2023.
89	Somero Enterprises Inc. Top agencies Army (Department of the Army)	$371,245	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
90	Woodland Equipment Inc. Top agencies USDA (Department of Agriculture)	$369,890	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
91	Asphalt Zipper Inc. Top agencies Navy (Department of the Navy)	$348,447	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
92	Guardian Systems LLC Top agencies Army (Department of the Army)	$338,832	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
93	Greenline Service Corp. Top agencies Army (Department of the Army)	$330,630	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 49 since FY2023.
94	Key Equipment & Supply Co. Top agencies Army (Department of the Army)	$330,424	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
95	William Phelan Top agencies Army (Department of the Army)	$304,750	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 51 since FY2023.
96	Steen Enterprises Inc. Top agencies Army (Department of the Army) USDA (Department of Agriculture) DHS (Department of Homeland Security)	$304,480	<0.1%	Rank history: #57 in FY2021, not on the FY2022 list, #74 in FY2023 and not on the FY2025 list; down 22 since FY2023.
97	3D Blooms, LLC Top agencies Army (Department of the Army) DOI (Department of the Interior)	$299,507	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 267 since FY2023.
98	T J Painting & Contracting LLC Top agencies Army (Department of the Army)	$293,972	<0.1%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2023 and #88 in FY2025; down 57 since FY2023.
99	Atmax Equipment Co. Top agencies DOI (Department of the Interior)	$291,137	<0.1%	Rank history: #34 in FY2021, not on the FY2022 list, #79 in FY2023 and #94 in FY2025; down 20 since FY2023.
100	LMH Trading LLC Top agencies Army (Department of the Army)	$289,171	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 226 since FY2023.

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100 of 602 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 3331

Code	Net obligations	Largest contractor
33312 Construction Machinery Manufacturing	$1,054,315,314	Caterpillar Inc.
33311 Agricultural Implement Manufacturing	$42,513,911	Deere & Company
33313 Mining and Oil and Gas Field Machinery Manufacturing	$3,351,554	Central Mine Equipment Company

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 $1.13 billion 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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 3331 contractors in FY2024?

1. Caterpillar Inc. ($369M), 2. American Material Handling, Inc. ($73.1M), 3. Taylor Defense Products, LLC ($71.2M), 4. Oshkosh Corporation ($62.4M), 5. Mack Defense LLC ($37.7M), 6. JCB Inc. ($37.3M), 7. AB Volvo ($32.9M), 8. Hyster-Yale Group, Inc. ($32.7M), 9. Garsite Progress, LLC ($27.1M), 10. Navistar International Corporation ($25.8M).

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