Top 100 Contractors in PSC J049: Maintenance, Repair and Rebuilding of Equipment: Maintenance and Repair Shop Equipment, FY2021

Name: Top 100 Contractors in PSC J049: Maintenance, Repair and Rebuilding of Equipment: Maintenance and Repair Shop Equipment, FY2021
Creator: GovTribe

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

The top 10 won 64% of FY2021 PSC J049 contract dollars

Contract obligations: $133,731,211 Net of deobligations, by contracts coded PSC J049
Contractors: 590 Parent companies with an obligation
Largest contractor: Atec Inc. $37.8 million, 25.0% 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	Atec Inc. Top agencies USAF (Department of the Air Force)	$37,828,123	25.0%	Rank history: #1 in FY2022, #2 in FY2023, #2 in FY2024 and #3 in FY2025; unchanged since FY2020.
2	ISS Facility Services Holding Inc. 2 awardees Top agencies DOT (Department of Transportation)	$14,802,658	9.8%	Rank history: #4 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
3	Agiliti Health Inc. 2 awardees Top agencies HHS (Department of Health and Human Services)	$12,258,285	8.1%	Rank history: #3 in FY2022 and not on the FY2023–FY2025 lists; up 4 since FY2020.
4	Teledyne Technologies Incorporated 2 awardees, including Teledyne Flir Defense, Inc. and Teledyne Defense Electronics, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$7,772,708	5.1%	Rank history: #19 in FY2022 and not on the FY2023–FY2025 lists; up 89 since FY2020.
5	Fastenal Company Top agencies USAF (Department of the Air Force)	$7,318,466	4.8%	Rank history: not on the FY2022–FY2025 lists; down 2 since FY2020.
6	National Capitol Contracting LLC 2 awardees Top agencies SSA (Social Security Administration)	$4,834,759	3.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
7	RTX Corporation 3 awardees, including Raytheon Company and Rockwell Collins, Inc. Top agencies USAF (Department of the Air Force)	$4,770,813	3.1%	Rank history: not on the FY2022–FY2025 lists; up 447 since FY2020.
8	BAE Systems Land & Armaments L.P. 2 awardees, including BAE Systems Information and Electronic Systems Integration Inc. Top agencies USAF (Department of the Air Force)	$2,674,391	1.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
9	Cherokee Nation System Solutions LLC Top agencies USAF (Department of the Air Force)	$2,450,794	1.6%	Rank history: #10 in FY2022, #7 in FY2023, #10 in FY2024 and #9 in FY2025; new, not ranked in FY2020.
10	Veterans Elite Inc. Top agencies VA (Department of Veterans Affairs)	$1,716,661	1.1%	Rank history: #18 in FY2022 and not on the FY2023–FY2025 lists; up 1 since FY2020.
11	A-Tech Systems, Inc. Top agencies DHS (Department of Homeland Security)	$1,595,527	1.1%	Rank history: #11 in FY2022 and not on the FY2023–FY2025 lists; down 3 since FY2020.
12	Quality Associates Inc. 2 awardees, including Konica Minolta Business Solutions U.s.a, Inc. and Meridian Imaging Solutions, Inc. Top agencies SSA (Social Security Administration) DOL (Department of Labor)	$1,533,320	1.0%	Rank history: #22 in FY2022 and not on the FY2023–FY2025 lists; up 363 since FY2020.
13	JTF Business Systems Corporation Top agencies SSA (Social Security Administration)	$1,479,120	1.0%	Rank history: #14 in FY2022, not on the FY2023 list, #24 in FY2024 and #27 in FY2025; new, not ranked in FY2020.
14	Mercer Technologies Inc. Top agencies USAF (Department of the Air Force)	$1,067,430	0.7%	Rank history: #43 in FY2022, #31 in FY2023, #77 in FY2024 and #40 in FY2025; up 13 since FY2020.
15	Centurum Information Technology Inc. Top agencies Navy (Department of the Navy)	$998,541	0.7%	Rank history: not on the FY2022–FY2023 lists, #4 in FY2024 and #2 in FY2025; new, not ranked in FY2020.
16	C & S Services, Inc. Top agencies Navy (Department of the Navy)	$980,839	0.6%	Rank history: #9 in FY2022, #8 in FY2023, #15 in FY2024 and #13 in FY2025; down 4 since FY2020.
17	Adolf Lupp GMBH + Co. KG Through Lupp Facility Management GMBH Top agencies Army (Department of the Army)	$879,961	0.6%	Rank history: #7 in FY2022, #6 in FY2023, #12 in FY2024 and #11 in FY2025; up 14 since FY2020.
18	The Timken Company 2 awardees, including Timken Gears & Services Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$820,236	0.5%	Rank history: not on the FY2022–FY2023 lists, #43 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
19	S & W Sales & Service, LLC Top agencies USAF (Department of the Air Force)	$777,293	0.5%	Rank history: not on the FY2022–FY2025 lists; down 5 since FY2020.
20	Pegasus Support Services LLC Top agencies Navy (Department of the Navy)	$759,186	0.5%	Rank history: #99 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
21	Eason Enterprises L.l.c Top agencies USAF (Department of the Air Force)	$694,509	0.5%	Rank history: #28 in FY2022, #14 in FY2023, #41 in FY2024 and not on the FY2025 list; down 5 since FY2020.
22	Texas Electrical & Testing Services LLC Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$677,892	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
23	Perkinelmer Inc. Through Revvity Health Sciences, Inc. Top agencies DOE (Department of Energy) USAF (Department of the Air Force) USDA (Department of Agriculture)	$671,700	0.4%	Rank history: not on the FY2022–FY2025 lists; up 34 since FY2020.
24	Dawson Enterprises, Inc. Top agencies Navy (Department of the Navy)	$599,837	0.4%	Rank history: #26 in FY2022 and not on the FY2023–FY2025 lists; down 5 since FY2020.
25	Cherokee Nation Aerospace and Defense, L.L.C. Top agencies Army (Department of the Army)	$588,500	0.4%	Rank history: #29 in FY2022, #5 in FY2023, #8 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
26	Radius Systems, LLC Top agencies Treasury (Department of the Treasury)	$561,865	0.4%	Rank history: not on the FY2022 list, #27 in FY2023, #28 in FY2024 and #42 in FY2025; up 7 since FY2020.
27	Johnsondanforth, Inc. Top agencies VA (Department of Veterans Affairs)	$531,454	0.4%	Rank history: #37 in FY2022, #23 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
28	Dutch Valley Supply Co. Top agencies USAF (Department of the Air Force)	$505,788	0.3%	Rank history: #30 in FY2022, not on the FY2023 list, #34 in FY2024 and not on the FY2025 list; up 147 since FY2020.
29	Hitec Power Protection Inc Top agencies HHS (Department of Health and Human Services)	$503,472	0.3%	Rank history: #68 in FY2022, #11 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
30	Phillips Corporation Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) USAF (Department of the Air Force)	$495,575	0.3%	Rank history: #40 in FY2022, #28 in FY2023, #29 in FY2024 and #25 in FY2025; down 12 since FY2020.
31	BAE Systems PLC 3 awardees, including BAE Systems Information & Electronic Systems Integration Inc. Top agencies USAF (Department of the Air Force)	$489,875	0.3%	Rank history: #6 in FY2022 and not on the FY2023–FY2025 lists; down 22 since FY2020.
32	Ricardo Perez S.a. Through Enprotech Industrial Technologies LLC Top agencies USAF (Department of the Air Force)	$459,902	0.3%	Rank history: #31 in FY2022, #50 in FY2023 and not on the FY2024–FY2025 lists; up 119 since FY2020.
33	Warfield & Sanford, Inc. Top agencies DOI (Department of the Interior)	$457,035	0.3%	Rank history: #34 in FY2022, #21 in FY2023, #25 in FY2024 and #32 in FY2025; down 10 since FY2020.
34	3 C S.R.L. - Sistemi & Tecnologie Top agencies Army (Department of the Army)	$441,451	0.3%	Rank history: #12 in FY2022, #39 in FY2023, #26 in FY2024 and #28 in FY2025; new, not ranked in FY2020.
35	Cesco, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$439,885	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
36	National Door Service, Inc. Top agencies USAF (Department of the Air Force)	$438,441	0.3%	Rank history: #41 in FY2022, #47 in FY2023, #70 in FY2024 and #74 in FY2025; new, not ranked in FY2020.
37	Textron Inc. Through Textron Systems Corporation Top agencies Navy (Department of the Navy)	$426,432	0.3%	Rank history: not on the FY2022–FY2025 lists; down 12 since FY2020.
38	Hologic, Inc. 2 awardees, including Hologic Sales and Service, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$422,848	0.3%	Rank history: #38 in FY2022, #72 in FY2023 and not on the FY2024–FY2025 lists; up 26 since FY2020.
39	Illumina, Inc. Top agencies HHS (Department of Health and Human Services)	$421,209	0.3%	Rank history: #55 in FY2022 and not on the FY2023–FY2025 lists; up 8 since FY2020.
40	Machine Tool Research, Inc. Top agencies Navy (Department of the Navy)	$399,765	0.3%	Rank history: #94 in FY2022, #86 in FY2023, #52 in FY2024 and #81 in FY2025; down 23 since FY2020.
41	Swish Data Corporation Top agencies HHS (Department of Health and Human Services)	$398,769	0.3%	Rank history: #45 in FY2022, #34 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2020.
42	Lockheed Martin Corporation Top agencies USAF (Department of the Air Force)	$396,754	0.3%	Rank history: not on the FY2022–FY2024 lists and #5 in FY2025; new, not ranked in FY2020.
43	Compagnie Merieux Alliance Through Biomerieux Inc. Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture) HHS (Department of Health and Human Services)	$382,305	0.3%	Rank history: #32 in FY2022, #32 in FY2023, #75 in FY2024 and not on the FY2025 list; up 16 since FY2020.
44	Thermo Electron Corporation 5 awardees, including FEI Company, Thermo Electron North America LLC and Remel Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) USAF (Department of the Air Force)	$374,947	0.2%	Rank history: #47 in FY2022, #81 in FY2023 and not on the FY2024–FY2025 lists; up 41 since FY2020.
45	Otis Elevator Company Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) DOT (Department of Transportation)	$374,724	0.2%	Rank history: #49 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
46	Aerobotix Inc. Top agencies USAF (Department of the Air Force)	$370,664	0.2%	Rank history: #46 in FY2022, #35 in FY2023, #17 in FY2024 and #35 in FY2025; down 11 since FY2020.
47	Agilent Technologies, Inc. 3 awardees, including Keysight Technologies, Inc. Top agencies USDA (Department of Agriculture) HHS (Department of Health and Human Services) Navy (Department of the Navy)	$352,244	0.2%	Rank history: #33 in FY2022, #30 in FY2023 and not on the FY2024–FY2025 lists; down 11 since FY2020.
48	Danaher Corporation 6 awardees, including Molecular Devices LLC, AB Sciex LLC and Beckman Coulter, Inc. Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) USAF (Department of the Air Force)	$343,066	0.2%	Rank history: #70 in FY2022, #37 in FY2023 and not on the FY2024–FY2025 lists; up 49 since FY2020.
49	RJY Group LLC Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy)	$330,014	0.2%	Rank history: #62 in FY2022 and not on the FY2023–FY2025 lists; down 11 since FY2020.
50	Luther Industries LLC Top agencies USAF (Department of the Air Force)	$317,830	0.2%	Rank history: #63 in FY2022, not on the FY2023 list, #33 in FY2024 and #30 in FY2025; down 28 since FY2020.
51	Sargent Aerospace & Defense LLC Top agencies USAF (Department of the Air Force)	$316,160	0.2%	Rank history: #25 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
52	Steris Corporation 2 awardees, including Controlled Environment Certification Services, Inc. Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture) DHA (Defense Health Agency)	$314,491	0.2%	Rank history: not on the FY2022 list, #90 in FY2023 and not on the FY2024–FY2025 lists; up 140 since FY2020.
53	Lu.mar. Impianti S.R.L. Top agencies Army (Department of the Army)	$308,431	0.2%	Rank history: #21 in FY2022, #49 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
54	Fedpoint Systems LLC Top agencies USDA (Department of Agriculture) HHS (Department of Health and Human Services)	$307,273	0.2%	Rank history: #61 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
55	Siemens Aktiengesellschaft 3 awardees, including Siemens Industry Inc. and Siemens Healthcare Diagnostics Inc. Top agencies USDA (Department of Agriculture) HHS (Department of Health and Human Services) Navy (Department of the Navy)	$299,786	0.2%	Rank history: #42 in FY2022, #19 in FY2023, #54 in FY2024 and not on the FY2025 list; up 23 since FY2020.
56	GMB Inc. Top agencies Navy (Department of the Navy)	$298,124	0.2%	Rank history: #24 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
57	Skope MR Inc. Top agencies HHS (Department of Health and Human Services)	$291,180	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
58	Alvarez LLC Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$286,365	0.2%	Rank history: #60 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
59	Craft Electrical Services Inc. Top agencies USDA (Department of Agriculture)	$285,536	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
60	Dunbar Mechanical Contractors, LLC Top agencies VA (Department of Veterans Affairs)	$284,241	0.2%	Rank history: #66 in FY2022, #56 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
61	Interwest Physics, LLC Top agencies USAF (Department of the Air Force)	$280,370	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
62	Ssai of Georgia, LLC Top agencies USAF (Department of the Air Force)	$271,404	0.2%	Rank history: #16 in FY2022, #16 in FY2023, #90 in FY2024 and not on the FY2025 list; down 42 since FY2020.
63	American Engineering Corporation Top agencies Navy (Department of the Navy)	$254,511	0.2%	Rank history: #67 in FY2022, #68 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
64	Patriot Mechanical, LLC Top agencies VA (Department of Veterans Affairs)	$249,422	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
65	Trandes Corp Top agencies Navy (Department of the Navy)	$242,188	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
66	ITL LLC Top agencies Navy (Department of the Navy)	$241,134	0.2%	Rank history: not on the FY2022–FY2025 lists; down 37 since FY2020.
67	Hartech Group LLC Top agencies Navy (Department of the Navy)	$240,805	0.2%	Rank history: not on the FY2022–FY2024 lists and #21 in FY2025; up 343 since FY2020.
68	Kueblbeck GMBH & Co. KG Top agencies Army (Department of the Army)	$240,524	0.2%	Rank history: not on the FY2022–FY2025 lists; down 17 since FY2020.
69	Clayton Associates Inc. Top agencies USAF (Department of the Air Force)	$239,254	0.2%	Rank history: #74 in FY2022, #25 in FY2023, #44 in FY2024 and #49 in FY2025; down 14 since FY2020.
70	F3 Solutions LLC Top agencies USAF (Department of the Air Force)	$236,082	0.2%	Rank history: #36 in FY2022, #88 in FY2023, #87 in FY2024 and not on the FY2025 list; down 20 since FY2020.
71	Logistics Management Institute Top agencies USAF (Department of the Air Force)	$231,370	0.2%	Rank history: not on the FY2022–FY2025 lists; down 61 since FY2020.
72	Getinge USA Sales, LLC Top agencies VA (Department of Veterans Affairs)	$227,660	0.2%	Rank history: not on the FY2022–FY2025 lists; down 6 since FY2020.
73	Fike Corporation Through Suppression Systems Inc. Top agencies Army (Department of the Army)	$220,000	0.1%	Rank history: #80 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
74	Becton, Dickinson and Co Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$211,246	0.1%	Rank history: #81 in FY2022 and not on the FY2023–FY2025 lists; up 393 since FY2020.
75	V.j. Technologies, Inc. Top agencies Army (Department of the Army)	$206,877	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
76	Satis Inc. Top agencies USAF (Department of the Air Force)	$199,518	0.1%	Rank history: #69 in FY2022 and not on the FY2023–FY2025 lists; up 7 since FY2020.
77	Vetpowered, LLC Top agencies USAF (Department of the Air Force)	$195,000	0.1%	Rank history: #78 in FY2022, #87 in FY2023 and not on the FY2024–FY2025 lists; down 36 since FY2020.
78	Mickan Generalbaugesellschaft Amberg MBH & Co. KG Top agencies Army (Department of the Army)	$192,953	0.1%	Rank history: #71 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
79	Venergy Group LLC Top agencies VA (Department of Veterans Affairs)	$190,958	0.1%	Rank history: not on the FY2022–FY2025 lists; down 39 since FY2020.
80	Machines & Methods Inc. Top agencies Navy (Department of the Navy)	$190,089	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
81	Spring Creek Environmental Services LLC Top agencies USAF (Department of the Air Force)	$184,496	0.1%	Rank history: #50 in FY2022, #13 in FY2023, not on the FY2024 list and #47 in FY2025; down 47 since FY2020.
82	Carl Zeiss X-RAY Microscopy Inc. 2 awardees, including Carl Zeiss Industrial Metrology, LLC and Carl Zeiss Microscopy, LLC Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) Navy (Department of the Navy)	$182,043	0.1%	Rank history: #72 in FY2022, #95 in FY2023 and not on the FY2024–FY2025 lists; up 12 since FY2020.
83	Ametek Inc. 4 awardees, including Advanced Measurement Technology Inc., Spectro Analytical Instruments, Inc. and Edax, LLC Top agencies DOE (Department of Energy) Army (Department of the Army) Navy (Department of the Navy)	$180,661	0.1%	Rank history: not on the FY2022 list, #58 in FY2023 and not on the FY2024–FY2025 lists; up 222 since FY2020.
84	Applied Ground Support Technical Services Inc. Top agencies USAF (Department of the Air Force)	$179,514	0.1%	Rank history: not on the FY2022 list, #91 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2020.
85	Honeywell International Inc. 2 awardees Top agencies USAF (Department of the Air Force)	$176,860	0.1%	Rank history: not on the FY2022–FY2023 lists, #47 in FY2024 and #55 in FY2025; down 57 since FY2020.
86	Spirent Communications PLC Through Spirent Federal Systems Inc. Top agencies Army (Department of the Army)	$175,440	0.1%	Rank history: #90 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
87	Komar Industries, LLC Top agencies Army (Department of the Army)	$170,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
88	Intuitive Surgical Inc. Top agencies HHS (Department of Health and Human Services)	$165,000	0.1%	Rank history: #52 in FY2022, #45 in FY2023, #49 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
89	Krätz GMBH Top agencies Army (Department of the Army)	$160,286	0.1%	Rank history: not on the FY2022 list, #40 in FY2023 and not on the FY2024–FY2025 lists; down 28 since FY2020.
90	Logistics and Generation Technology Services, LLC Top agencies DHS (Department of Homeland Security)	$157,636	0.1%	Rank history: not on the FY2022–FY2025 lists; up 79 since FY2020.
91	J2 Associates, LLC Top agencies SSA (Social Security Administration)	$157,516	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
92	Command Technical Services, Inc. Top agencies USAF (Department of the Air Force)	$154,301	0.1%	Rank history: not on the FY2022–FY2025 lists; down 17 since FY2020.
93	Ewing Machine Services, Inc. Top agencies USAF (Department of the Air Force)	$151,440	0.1%	Rank history: not on the FY2022 list, #77 in FY2023, not on the FY2024 list and #36 in FY2025; up 38 since FY2020.
94	General Dynamics Corporation Through General Dynamics Mission Systems, Inc. Top agencies Army (Department of the Army)	$150,453	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
95	Danobat Limited Top agencies USAF (Department of the Air Force)	$149,930	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
96	Pacific Coast Contracting Group Top agencies VA (Department of Veterans Affairs)	$149,293	0.1%	Rank history: not on the FY2022–FY2025 lists; up 7 since FY2020.
97	Testvonics Inc. Top agencies USAF (Department of the Air Force)	$148,416	0.1%	Rank history: not on the FY2022–FY2025 lists; up 181 since FY2020.
98	Bauer, Inc. Top agencies USAF (Department of the Air Force)	$146,441	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	King Scientific Services Inc. Top agencies HHS (Department of Health and Human Services)	$145,175	0.1%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
100	ST Engineering Halter Marine and Offshore Inc. 2 awardees, including Miltope Corporation and ST Engineering Aethon Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$143,675	0.1%	Rank history: not on the FY2022–FY2025 lists; up 4 since FY2020.

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100 of 590 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 $152 million obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2020. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2020 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 PSC J049 contractors in FY2021?

1. Atec Inc. ($37.8M), 2. ISS Facility Services Holding Inc. ($14.8M), 3. Agiliti Health Inc. ($12.3M), 4. Teledyne Technologies Incorporated ($7.77M), 5. Fastenal Company ($7.32M), 6. National Capitol Contracting LLC ($4.83M), 7. RTX Corporation ($4.77M), 8. BAE Systems Land & Armaments L.P. ($2.67M), 9. Cherokee Nation System Solutions LLC ($2.45M), 10. Veterans Elite Inc. ($1.72M).

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