Top 100 Contractors in NAICS 81131: Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance, FY2024

Name: Top 100 Contractors in NAICS 81131: Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance, FY2024
Creator: GovTribe

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

The top 10 won 34% of FY2024 NAICS 81131 contract dollars

Contract obligations: $772,439,352 Net of deobligations, by contracts coded NAICS 81131 or a code under it
Contractors: 2,572 Parent companies with an obligation
Largest contractor: KBR Wyle Services LLC $77.3 million, 9.2% 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	KBR Wyle Services LLC 2 awardees, including KBR Services, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$77,254,009	9.2%	Rank history: not on the FY2021–FY2023 lists and #1 in FY2025; new.
2	Welin Lambie Limited 2 awardees, including Cooper Machinery Services LLC and Fairbanks Morse, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$53,181,480	6.3%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2025; new.
3	Atec Inc. Through Vital Link, Inc. Top agencies USAF (Department of the Air Force)	$28,660,053	3.4%	Rank history: #3 in FY2021, #2 in FY2022, #2 in FY2023 and not on the FY2025 list; down 1 since FY2023.
4	General Electric Company 9 awardees, including GE Aviation Systems LLC and GE Precision Healthcare LLC Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force) DOJ (Department of Justice)	$27,832,955	3.3%	Rank history: #2 in FY2021, #4 in FY2022, #4 in FY2023 and #6 in FY2025; unchanged since FY2023.
5	Vital Link, Inc. Top agencies USAF (Department of the Air Force)	$25,725,305	3.1%	Rank history: not on the FY2021–FY2023 lists and #2 in FY2025; new.
6	Sandhills Utility Services, LLC Top agencies Army (Department of the Army)	$23,914,824	2.9%	Rank history: #4 in FY2021, #5 in FY2022, #5 in FY2023 and #4 in FY2025; down 1 since FY2023.
7	General Dynamics Corporation 3 awardees, including General Dynamics Mission Systems, Inc. and General Dynamics Information Technology, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$14,996,015	1.8%	Rank history: #18 in FY2021, #17 in FY2022, #17 in FY2023 and #10 in FY2025; up 10 since FY2023.
8	Cherokee Nation Through Cherokee Nation Aerospace and Defense, L.L.C. Top agencies Army (Department of the Army)	$12,080,840	1.4%	Rank history: not on the FY2021–FY2023 lists and #51 in FY2025; new.
9	American Engineering Corporation 2 awardees Top agencies DODEA (Department of Defense Education Activity) Army (Department of the Army) Navy (Department of the Navy)	$11,437,752	1.4%	Rank history: #10 in FY2021, #8 in FY2022, #8 in FY2023 and #22 in FY2025; down 1 since FY2023.
10	Phillips Corporation 2 awardees Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$10,607,320	1.3%	Rank history: #48 in FY2021, #43 in FY2022, #13 in FY2023 and #5 in FY2025; up 3 since FY2023.
11	Lakota Solutions LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$8,931,467	1.1%	Rank history: #31 in FY2021, #20 in FY2022, #11 in FY2023 and #45 in FY2025; unchanged since FY2023.
12	Hatalom Corp Top agencies Navy (Department of the Navy)	$8,619,613	1.0%	Rank history: #14 in FY2021, #11 in FY2022, #14 in FY2023 and #19 in FY2025; up 2 since FY2023.
13	Northrop Grumman Systems Corporation Top agencies Navy (Department of the Navy)	$7,954,053	0.9%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
14	PC Mechanical, Inc. Top agencies Navy (Department of the Navy)	$7,258,511	0.9%	Rank history: #69 in FY2021, #40 in FY2022, #10 in FY2023 and #8 in FY2025; down 4 since FY2023.
15	Mechanical Resources Incorporated Top agencies Navy (Department of the Navy)	$6,985,122	0.8%	Rank history: #16 in FY2021, #14 in FY2022, not on the FY2023 list and #14 in FY2025; up 381 since FY2023.
16	Tepco Energy Partner, Incorporated Top agencies Navy (Department of the Navy)	$6,733,933	0.8%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
17	Tusas Motor Sanayii A.S. Top agencies Navy (Department of the Navy)	$6,685,868	0.8%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2025; new.
18	Al Rawabet Commercial Services & Contracting Co. W.L.L. Top agencies Army (Department of the Army)	$6,359,807	0.8%	Rank history: not on the FY2021 list, #21 in FY2022, #31 in FY2023 and #12 in FY2025; up 13 since FY2023.
19	Greenlight Group JV, LLC Top agencies Navy (Department of the Navy)	$6,281,931	0.7%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2025; new.
20	Energy Systems Group, LLC Top agencies Army (Department of the Army)	$6,274,639	0.7%	Rank history: not on the FY2021–FY2023 lists and #21 in FY2025; new.
21	Bell and Howell, LLC Top agencies Treasury (Department of the Treasury)	$5,856,358	0.7%	Rank history: not on the FY2021–FY2023 lists and #13 in FY2025; new.
22	QED Systems, Inc. Top agencies Navy (Department of the Navy)	$5,679,969	0.7%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2025; new.
23	M.c. Dean, Inc. Top agencies WHS (DOD Washington Headquarters Service)	$5,652,505	0.7%	Rank history: #26 in FY2021, #25 in FY2022, #46 in FY2023 and #24 in FY2025; up 23 since FY2023.
24	KBR Services LLC Top agencies Navy (Department of the Navy)	$5,525,181	0.7%	Rank history: not on the FY2021 list, #27 in FY2022, #1 in FY2023 and not on the FY2025 list; down 23 since FY2023.
25	Craneworks, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$5,429,434	0.6%	Rank history: #32 in FY2021, #24 in FY2022, #33 in FY2023 and #23 in FY2025; up 8 since FY2023.
26	MTU Maintenance Berlin- Brandenburg GMBH Top agencies Navy (Department of the Navy)	$5,235,634	0.6%	Rank history: not on the FY2021–FY2023 lists and #64 in FY2025; new.
27	Refcon Services Inc Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$5,207,576	0.6%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2023 and #30 in FY2025; up 2 since FY2023.
28	Defense Maritime Solutions, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$5,197,071	0.6%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2025; new.
29	Barragan Corp. International Top agencies Navy (Department of the Navy)	$5,033,106	0.6%	Rank history: not on the FY2021–FY2023 lists and #31 in FY2025; new.
30	Adolf Lupp GMBH + Co. KG Through Lupp Facility Management GMBH Top agencies Army (Department of the Army)	$5,015,798	0.6%	Rank history: #22 in FY2021, #12 in FY2022, #16 in FY2023 and #26 in FY2025; down 14 since FY2023.
31	Cummins Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$4,617,858	0.6%	Rank history: not on the FY2021–FY2023 lists and #28 in FY2025; new.
32	Epsilon C5I Inc. Through Epsilon Systems Solutions, Inc. Top agencies Navy (Department of the Navy)	$4,577,715	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
33	L3Harris Technologies, Inc. 5 awardees, including L3Harris Maritime Services Inc. and L3 Technologies, Inc. Top agencies Navy (Department of the Navy)	$4,304,515	0.5%	Rank history: #35 in FY2021, #41 in FY2022, #12 in FY2023 and #20 in FY2025; down 21 since FY2023.
34	Youone Engineering Co.,Ltd Top agencies Army (Department of the Army)	$4,288,500	0.5%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2023 and #37 in FY2025; down 4 since FY2023.
35	Huntington Ingalls Industries, Inc. Through HII Fleet Support Group LLC Top agencies Navy (Department of the Navy)	$3,654,996	0.4%	Rank history: not on the FY2021 list, #35 in FY2022, #39 in FY2023 and #40 in FY2025; up 4 since FY2023.
36	Cherokee Nation Aerospace and Defense, L.L.C. Top agencies Army (Department of the Army)	$3,602,016	0.4%	Rank history: #52 in FY2021, #23 in FY2022, #21 in FY2023 and not on the FY2025 list; down 15 since FY2023.
37	Korea Electric Power Jeonuhoe Through JW Business Company Top agencies Army (Department of the Army)	$3,535,136	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
38	TK Elevator Corporation 6 awardees, including Thyssenkrupp Elevator Corporation Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs) Army (Department of the Army)	$3,412,740	0.4%	Rank history: #60 in FY2021, #30 in FY2022, #35 in FY2023 and not on the FY2025 list; down 3 since FY2023.
39	Peak Facility Solutions LLC Top agencies Commerce (Department of Commerce)	$3,292,753	0.4%	Rank history: #44 in FY2021, not on the FY2022 list, #57 in FY2023 and #42 in FY2025; up 18 since FY2023.
40	Alliance Worldwide Distributing LLC Top agencies Navy (Department of the Navy) DECA (Defense Commissary Agency) SSA (Social Security Administration)	$3,238,206	0.4%	Rank history: #19 in FY2021, #28 in FY2022, #34 in FY2023 and #50 in FY2025; down 6 since FY2023.
41	Independent Rough Terrain Center LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$3,119,944	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
42	Arcticom, LLC Top agencies DOS (Department of State)	$3,092,438	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
43	S.t.s. - Servizi Tecnologie E Sviluppo S.R.L. Top agencies DECA (Defense Commissary Agency)	$3,036,059	0.4%	Rank history: not on the FY2021 list, #83 in FY2022, #60 in FY2023 and #35 in FY2025; up 17 since FY2023.
44	Bering Straits Professional Services, LLC Top agencies DOS (Department of State)	$3,016,722	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
45	MTU Aero Engines Holding AG Through Vericor Power Systems LLC Top agencies Navy (Department of the Navy)	$2,886,381	0.3%	Rank history: #54 in FY2021, #32 in FY2022, #47 in FY2023 and not on the FY2025 list; up 2 since FY2023.
46	C2G, Ltd Co. Top agencies DECA (Defense Commissary Agency) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$2,815,918	0.3%	Rank history: #43 in FY2021, #57 in FY2022, #49 in FY2023 and #54 in FY2025; up 3 since FY2023.
47	Native American Transformer Services Inc. Top agencies DOI (Department of the Interior)	$2,687,279	0.3%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2023 and #56 in FY2025; up 26 since FY2023.
48	Genstrong LLC Top agencies DHS (Department of Homeland Security)	$2,608,398	0.3%	Rank history: not on the FY2021 list, #55 in FY2022, #55 in FY2023 and #49 in FY2025; up 7 since FY2023.
49	Cherokee Nation System Solutions LLC Top agencies USAF (Department of the Air Force)	$2,601,329	0.3%	Rank history: #36 in FY2021, #54 in FY2022, #54 in FY2023 and #47 in FY2025; up 5 since FY2023.
50	Megawattage LLC Top agencies DHS (Department of Homeland Security) Commerce (Department of Commerce)	$2,590,605	0.3%	Rank history: #21 in FY2021, #39 in FY2022, #53 in FY2023 and #53 in FY2025; up 3 since FY2023.
51	Brown Point Facility Management Solutions, LLC Top agencies DECA (Defense Commissary Agency) VA (Department of Veterans Affairs) Commerce (Department of Commerce)	$2,402,852	0.3%	Rank history: #76 in FY2021, #71 in FY2022, not on the FY2023 list and #46 in FY2025; up 79 since FY2023.
52	RWG Repair & Overhauls USA Inc. Top agencies Navy (Department of the Navy)	$2,395,728	0.3%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2025; new.
53	Alloy Crane & Machinery LLC Top agencies Navy (Department of the Navy)	$2,380,339	0.3%	Rank history: #55 in FY2021, #53 in FY2022, #64 in FY2023 and #29 in FY2025; up 11 since FY2023.
54	Puckett Machinery Company Top agencies Army (Department of the Army) USDA (Department of Agriculture) VA (Department of Veterans Affairs)	$2,362,163	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
55	Alaska Boiler & Burner LLC Top agencies USAF (Department of the Air Force)	$2,340,748	0.3%	Rank history: not on the FY2021–FY2023 lists and #82 in FY2025; new.
56	Western Branch Diesel, LLC Top agencies DHS (Department of Homeland Security)	$2,315,685	0.3%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2025; new.
57	Southwest Research Institute Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$2,281,504	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
58	Mythics Inc. 5 awardees, including The W.w. Williams Company, LLC Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) DOJ (Department of Justice)	$2,247,324	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
59	SKE Support Services GMBH Top agencies Army (Department of the Army)	$2,195,801	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
60	Caterpillar Inc. 2 awardees, including Solar Turbines Incorporated Top agencies Navy (Department of the Navy) SSA (Social Security Administration) VA (Department of Veterans Affairs)	$2,053,105	0.2%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023 and not on the FY2025 list; up 38 since FY2023.
61	ABB Inc 3 awardees Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$2,051,825	0.2%	Rank history: #71 in FY2021, #47 in FY2022, #51 in FY2023 and #57 in FY2025; down 10 since FY2023.
62	Andritz AG Through Andritz Schuler Incorporated Top agencies Treasury (Department of the Treasury)	$2,004,933	0.2%	Rank history: not on the FY2021–FY2022 lists, #61 in FY2023 and not on the FY2025 list; down 1 since FY2023.
63	Atlanta Gear Works, LLC Top agencies Army (Department of the Army)	$1,986,997	0.2%	Rank history: not on the FY2021–FY2022 lists, #36 in FY2023 and #52 in FY2025; down 27 since FY2023.
64	Rolls-Royce Solutions America Inc. 2 awardees Top agencies Navy (Department of the Navy)	$1,986,458	0.2%	Rank history: not on the FY2021–FY2023 lists and #70 in FY2025; new.
65	C & S Services, Inc. 2 awardees Top agencies Navy (Department of the Navy)	$1,914,721	0.2%	Rank history: #86 in FY2021, #51 in FY2022, #65 in FY2023 and #58 in FY2025; unchanged since FY2023.
66	TECH Systems Inc. Top agencies USTRANSCOM (Department of Defense United States Transportation Command) Army (Department of the Army)	$1,859,371	0.2%	Rank history: not on the FY2021 list, #73 in FY2022, #32 in FY2023 and #72 in FY2025; down 34 since FY2023.
67	Sanford Federal, Inc. Top agencies DECA (Defense Commissary Agency) USAF (Department of the Air Force) Army (Department of the Army)	$1,830,099	0.2%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2023 and not on the FY2025 list; up 7 since FY2023.
68	Kion Group AG Through Dematic Corp Top agencies Army (Department of the Army)	$1,785,175	0.2%	Rank history: not on the FY2021–FY2023 lists and #73 in FY2025; up 40 since FY2023.
69	High Performance Solutions L.L.C. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$1,737,440	0.2%	Rank history: #33 in FY2021, #62 in FY2022, #77 in FY2023 and #55 in FY2025; up 8 since FY2023.
70	Ahtna, Incorporated Through Ahtna Logistics, LLC Top agencies Navy (Department of the Navy)	$1,677,404	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 136 since FY2023.
71	Rolls-Royce Military Aero Engines Ltd 3 awardees, including Rolls-Royce Solutions America Inc. and Rolls-Royce Marine North America Inc. Top agencies Navy (Department of the Navy)	$1,597,023	0.2%	Rank history: #15 in FY2021, #34 in FY2022, #22 in FY2023 and not on the FY2025 list; down 49 since FY2023.
72	Lakey Inc. Top agencies Army (Department of the Army)	$1,585,145	0.2%	Rank history: not on the FY2021 list, #36 in FY2022, not on the FY2023 list and not on the FY2025 list; up 256 since FY2023.
73	V.j. Technologies, Inc. Top agencies Army (Department of the Army)	$1,536,601	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
74	Firelake Construction Inc Top agencies USDA (Department of Agriculture)	$1,497,196	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
75	RJY Group LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$1,490,408	0.2%	Rank history: #93 in FY2021, #78 in FY2022, #59 in FY2023 and #78 in FY2025; down 16 since FY2023.
76	Canadian Commercial Corporation Top agencies Navy (Department of the Navy)	$1,472,798	0.2%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2025; new.
77	Royal Arc Welding Company, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$1,457,366	0.2%	Rank history: #50 in FY2021, #85 in FY2022, not on the FY2023 list and #87 in FY2025; up 30 since FY2023.
78	Eaton Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) SSA (Social Security Administration)	$1,453,289	0.2%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2025; new.
79	Penobscot Support Services, LLC Top agencies Army (Department of the Army)	$1,403,297	0.2%	Rank history: not on the FY2021 list, #67 in FY2022, #70 in FY2023 and #93 in FY2025; down 9 since FY2023.
80	Archway Service Inc. Top agencies DECA (Defense Commissary Agency)	$1,399,030	0.2%	Rank history: not on the FY2021–FY2023 lists and #99 in FY2025; up 245 since FY2023.
81	Assured Plant Services Inc. Top agencies Navy (Department of the Navy)	$1,373,382	0.2%	Rank history: #70 in FY2021, #72 in FY2022, not on the FY2023 list and #75 in FY2025; up 30 since FY2023.
82	Tatra Solutions Inc. Top agencies Army (Department of the Army)	$1,355,440	0.2%	Rank history: not on the FY2021–FY2023 lists and #80 in FY2025; new.
83	Fuduric GMBH & Co. KG Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$1,343,707	0.2%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023 and not on the FY2025 list; up 3 since FY2023.
84	Mitsui E&S Holdings Co., Ltd. Through MES Tokki & Engineering Co., Ltd. Top agencies Navy (Department of the Navy)	$1,333,928	0.2%	Rank history: #51 in FY2021, not on the FY2022–FY2023 lists and #48 in FY2025; up 34 since FY2023.
85	Stephenson Equipment Inc. Top agencies Army (Department of the Army)	$1,331,817	0.2%	Rank history: #72 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 69 since FY2023.
86	RIX Industries Top agencies Navy (Department of the Navy)	$1,327,359	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 170 since FY2023.
87	Mitomo Denki Service Co. Ltd. Through Mitomo Co., Ltd. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$1,279,969	0.2%	Rank history: #56 in FY2021, #61 in FY2022, #40 in FY2023 and not on the FY2025 list; down 47 since FY2023.
88	Mitomo Co., Ltd. Top agencies Army (Department of the Army)	$1,256,626	0.2%	Rank history: not on the FY2021–FY2023 lists and #18 in FY2025; new.
89	Greenway-Nei JV LLC Top agencies Navy (Department of the Navy)	$1,234,417	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
90	Greenway Global Corp Top agencies Army (Department of the Army)	$1,167,824	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
91	R.w. Martin and Sons Inc. Top agencies VA (Department of Veterans Affairs)	$1,163,812	0.1%	Rank history: not on the FY2021 list, #74 in FY2022, #79 in FY2023 and #67 in FY2025; down 12 since FY2023.
92	DAP Construction Management LLC Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$1,160,518	0.1%	Rank history: not on the FY2021–FY2023 lists and #100 in FY2025; up 17 since FY2023.
93	Magadia Consulting Inc. Top agencies Army (Department of the Army)	$1,142,017	0.1%	Rank history: #82 in FY2021, #80 in FY2022, #87 in FY2023 and not on the FY2025 list; down 6 since FY2023.
94	Aerobotix Inc. Top agencies USAF (Department of the Air Force)	$1,102,078	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 134 since FY2023.
95	Tom Hammonds Enterprises, LLC Top agencies USAF (Department of the Air Force)	$1,095,376	0.1%	Rank history: #97 in FY2021, #96 in FY2022, #93 in FY2023 and not on the FY2025 list; down 2 since FY2023.
96	Fairbanks Morse, LLC Top agencies DHS (Department of Homeland Security)	$1,093,557	0.1%	Rank history: not on the FY2021–FY2023 lists and #79 in FY2025; new.
97	Schmitt + Sohn Aufzuege GMBH & Co. KG Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$1,074,008	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 172 since FY2023.
98	F3Ea Inc. Top agencies Navy (Department of the Navy)	$1,045,045	0.1%	Rank history: not on the FY2021–FY2022 lists, #37 in FY2023 and not on the FY2025 list; down 61 since FY2023.
99	Micron Air & Mechanical Solutions Inc. Top agencies Army (Department of the Army)	$1,037,294	0.1%	Rank history: not on the FY2021 list, #81 in FY2022, #90 in FY2023 and not on the FY2025 list; down 9 since FY2023.
100	Centerpoint Energy, Inc. Through Energy Systems Group, LLC Top agencies Army (Department of the Army)	$984,116	0.1%	Rank history: #9 in FY2021, #18 in FY2022, #26 in FY2023 and not on the FY2025 list; down 74 since FY2023.

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100 of 2,572 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 81131

Code	Net obligations	Largest contractor
811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$772,439,352	KBR Wyle Services LLC

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 $838 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 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 81131 contractors in FY2024?

1. KBR Wyle Services LLC ($77.3M), 2. Welin Lambie Limited ($53.2M), 3. Atec Inc. ($28.7M), 4. General Electric Company ($27.8M), 5. Vital Link, Inc. ($25.7M), 6. Sandhills Utility Services, LLC ($23.9M), 7. General Dynamics Corporation ($15M), 8. Cherokee Nation ($12.1M), 9. American Engineering Corporation ($11.4M), 10. Phillips Corporation ($10.6M).

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