Top 100 Contractors in NAICS 33241: Power Boiler and Heat Exchanger Manufacturing, Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Bechtel Corp Through Bechtel Plant Machinery, Inc. Top agencies Navy (Department of the Navy)	$2,063,453,436	91.1%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Aug 2024–Jul 2025.
2	Huntington Ingalls Industries, Inc. Through Huntington Ingalls Inc. Top agencies Navy (Department of the Navy)	$11,368,110	0.5%	Rank history: #3 in FY2021, #3 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; unchanged since Aug 2024–Jul 2025.
3	ECI Defense Group, Inc. 2 awardees Top agencies DLA (Defense Logistics Agency)	$9,171,514	0.4%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2023, #11 in FY2024 and #3 in FY2025; up 4 since Aug 2024–Jul 2025.
4	Aqua-Chem, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$7,885,711	0.3%	Rank history: #9 in FY2021, #4 in FY2022, #4 in FY2023, #5 in FY2024 and #6 in FY2025; up 1 since Aug 2024–Jul 2025.
5	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$2,221,154	0.1%	Rank history: #10 in FY2021, #23 in FY2022, #7 in FY2023, #9 in FY2024 and #4 in FY2025; down 2 since Aug 2024–Jul 2025.
6	H C Merchandisers, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,340,801	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
7	Terry Service, Inc. Top agencies Army (Department of the Army)	$1,214,029	0.1%	Rank history: not on the FY2021–FY2024 lists and #8 in FY2025; up 3 since Aug 2024–Jul 2025.
8	S I T Corporation Top agencies DLA (Defense Logistics Agency)	$1,039,529	<0.1%	Rank history: #11 in FY2021, #41 in FY2022, #9 in FY2023, #12 in FY2024 and #35 in FY2025; up 27 since Aug 2024–Jul 2025.
9	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency)	$1,038,917	<0.1%	Rank history: #6 in FY2021, #58 in FY2022, not on the FY2023 list, #23 in FY2024 and #21 in FY2025; up 20 since Aug 2024–Jul 2025.
10	Argo Turboserve Corporation Top agencies DLA (Defense Logistics Agency)	$1,004,571	<0.1%	Rank history: #42 in FY2021, #18 in FY2022, #6 in FY2023, #10 in FY2024 and #14 in FY2025; up 6 since Aug 2024–Jul 2025.
11	Sogen Company, Inc. Top agencies DLA (Defense Logistics Agency)	$766,233	<0.1%	Rank history: not on the FY2021–FY2023 lists, #81 in FY2024 and #95 in FY2025; up 62 since Aug 2024–Jul 2025.
12	Eddy Pump Corporation Top agencies Navy (Department of the Navy)	$754,042	<0.1%	Rank history: not on the FY2021–FY2024 lists and #12 in FY2025; new, not ranked in Aug 2024–Jul 2025.
13	Renk Systems Corp Top agencies Navy (Department of the Navy)	$749,986	<0.1%	Rank history: not on the FY2021–FY2024 lists and #10 in FY2025; new, not ranked in Aug 2024–Jul 2025.
14	Heico Corp Through Pioneer Industries, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$719,086	<0.1%	Rank history: not on the FY2021–FY2024 lists and #24 in FY2025; new, not ranked in Aug 2024–Jul 2025.
15	RPS Holdings, Inc. Through Rantec Power Systems Inc. Top agencies Navy (Department of the Navy)	$661,500	<0.1%	Rank history: not on the FY2021–FY2024 lists and #13 in FY2025; new, not ranked in Aug 2024–Jul 2025.
16	Par Defense Industries, LLC Top agencies DLA (Defense Logistics Agency)	$642,784	<0.1%	Rank history: #61 in FY2021, #83 in FY2022, not on the FY2023–FY2024 lists and #28 in FY2025; up 6 since Aug 2024–Jul 2025.
17	Fluid Handling LLC 2 awardees, including Evoqua Water Technologies LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$610,895	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
18	Arhab LLC Top agencies Army (Department of the Army) DOI (Department of the Interior) DHS (Department of Homeland Security)	$564,867	<0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; new, not ranked in Aug 2024–Jul 2025.
19	Phoenix Trading Inc. Top agencies DLA (Defense Logistics Agency)	$563,134	<0.1%	Rank history: #13 in FY2021, #27 in FY2022, #21 in FY2023, #64 in FY2024 and #42 in FY2025; up 27 since Aug 2024–Jul 2025.
20	Separator Spares & Equipment LLC Top agencies DLA (Defense Logistics Agency)	$563,120	<0.1%	Rank history: not on the FY2021 list, #35 in FY2022, #52 in FY2023, #21 in FY2024 and #29 in FY2025; up 11 since Aug 2024–Jul 2025.
21	Peterson Machinery Co Top agencies DOJ (Department of Justice)	$485,494	<0.1%	Rank history: not on the FY2021–FY2024 lists and #27 in FY2025; up 38 since Aug 2024–Jul 2025.
22	Northrop Grumman Systems Corporation Top agencies Navy (Department of the Navy)	$442,310	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
23	Fincantieri Marine Systems North America, Inc. Top agencies DLA (Defense Logistics Agency)	$426,837	<0.1%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and not on the FY2025 list; up 105 since Aug 2024–Jul 2025.
24	Limco-Piedmont Inc. Through Limco Airepair Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$414,498	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
25	Derbyshire Machine & Tool Co Top agencies DLA (Defense Logistics Agency)	$387,870	<0.1%	Rank history: #98 in FY2021, not on the FY2022 list, #92 in FY2023, #87 in FY2024 and #63 in FY2025; up 36 since Aug 2024–Jul 2025.
26	Alfa Laval U.S. Holding Inc. 2 awardees, including Alfa Laval Inc. and Tranter Inc. Top agencies Navy (Department of the Navy)	$371,381	<0.1%	Rank history: not on the FY2021–FY2023 lists, #92 in FY2024 and #5 in FY2025; down 22 since Aug 2024–Jul 2025.
27	Delval Equipment Corporation Top agencies DOJ (Department of Justice) USAF (Department of the Air Force) Navy (Department of the Navy)	$359,857	<0.1%	Rank history: #99 in FY2021, not on the FY2022–FY2024 lists and #57 in FY2025; up 92 since Aug 2024–Jul 2025.
28	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency)	$355,071	<0.1%	Rank history: #22 in FY2021, not on the FY2022–FY2023 lists, #84 in FY2024 and #43 in FY2025; up 19 since Aug 2024–Jul 2025.
29	Evoqua Water Technologies LLC Through Fluid Handling LLC Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$324,436	<0.1%	Rank history: not on the FY2021–FY2023 lists, #16 in FY2024 and #9 in FY2025; down 21 since Aug 2024–Jul 2025.
30	Prime Mover Holdings LLC Through Motor Services Hugo Stamp Inc. Top agencies Navy (Department of the Navy)	$294,550	<0.1%	Rank history: not on the FY2021–FY2024 lists and #33 in FY2025; new, not ranked in Aug 2024–Jul 2025.
31	Howland Pump & Supply Co Inc. Top agencies Army (Department of the Army)	$292,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
32	Caldaia Controls LLC Top agencies VA (Department of Veterans Affairs)	$249,950	<0.1%	Rank history: #23 in FY2021, #37 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
33	Lynchburg Air Preheater Corporation Top agencies DOI (Department of the Interior) Commerce (Department of Commerce)	$227,438	<0.1%	Rank history: #37 in FY2021, #24 in FY2022, not on the FY2023 list, #7 in FY2024 and #23 in FY2025; down 21 since Aug 2024–Jul 2025.
34	Thrustmaster of Texas, Inc. Top agencies Navy (Department of the Navy)	$208,480	<0.1%	Rank history: not on the FY2021–FY2024 lists and #40 in FY2025; new, not ranked in Aug 2024–Jul 2025.
35	DC Fabricators Inc. Top agencies DLA (Defense Logistics Agency)	$201,480	<0.1%	Rank history: not on the FY2021–FY2022 lists, #89 in FY2023, #98 in FY2024 and #74 in FY2025; up 57 since Aug 2024–Jul 2025.
36	Valley Boiler & Mechanical, Inc. Top agencies DOJ (Department of Justice)	$193,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
37	Westchester Plastics LLC Top agencies Army (Department of the Army)	$191,696	<0.1%	Rank history: not on the FY2021–FY2023 lists, #30 in FY2024 and #44 in FY2025; new, not ranked in Aug 2024–Jul 2025.
38	MCO Solutions, Inc. Top agencies DLA (Defense Logistics Agency)	$188,945	<0.1%	Rank history: not on the FY2021 list, #33 in FY2022, #50 in FY2023, #25 in FY2024 and #30 in FY2025; up 1 since Aug 2024–Jul 2025.
39	Aantilia LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$178,482	<0.1%	Rank history: #53 in FY2021, #53 in FY2022, not on the FY2023 list, #34 in FY2024 and #99 in FY2025; up 37 since Aug 2024–Jul 2025.
40	Tomahawk Sourcing LLC Top agencies DLA (Defense Logistics Agency)	$175,133	<0.1%	Rank history: #32 in FY2021, not on the FY2022–FY2023 lists, #55 in FY2024 and #15 in FY2025; down 21 since Aug 2024–Jul 2025.
41	NGH Retail LLC Top agencies DLA (Defense Logistics Agency)	$173,088	<0.1%	Rank history: #38 in FY2021, #72 in FY2022, #48 in FY2023, #47 in FY2024 and #47 in FY2025; up 15 since Aug 2024–Jul 2025.
42	Larkos Packing and Distribution Inc. Top agencies DLA (Defense Logistics Agency)	$170,018	<0.1%	Rank history: not on the FY2021–FY2022 lists, #87 in FY2023, #53 in FY2024 and not on the FY2025 list; up 33 since Aug 2024–Jul 2025.
43	Wizard Technologies Inc. Top agencies DLA (Defense Logistics Agency)	$165,770	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 99 since Aug 2024–Jul 2025.
44	Robco Sales Inc. Top agencies VA (Department of Veterans Affairs)	$164,138	<0.1%	Rank history: not on the FY2021–FY2024 lists and #50 in FY2025; new, not ranked in Aug 2024–Jul 2025.
45	Formica Industries LLC Top agencies DLA (Defense Logistics Agency)	$143,600	<0.1%	Rank history: #45 in FY2021, #93 in FY2022 and not on the FY2023–FY2025 lists; up 48 since Aug 2024–Jul 2025.
46	RNK International, Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$136,046	<0.1%	Rank history: not on the FY2021 list, #80 in FY2022, not on the FY2023–FY2024 lists and #72 in FY2025; up 17 since Aug 2024–Jul 2025.
47	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency)	$135,187	<0.1%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2023, not on the FY2024 list and #81 in FY2025; up 43 since Aug 2024–Jul 2025.
48	Apex Pinnacle Corp Top agencies DLA (Defense Logistics Agency)	$135,035	<0.1%	Rank history: not on the FY2021–FY2024 lists and #55 in FY2025; new, not ranked in Aug 2024–Jul 2025.
49	FAD Pennsylvania Inc Top agencies Navy (Department of the Navy)	$132,623	<0.1%	Rank history: not on the FY2021–FY2023 lists, #8 in FY2024 and #66 in FY2025; down 26 since Aug 2024–Jul 2025.
50	Veterans Aerospace LLC Top agencies DLA (Defense Logistics Agency)	$130,095	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
51	Johnson Controls Federal Systems, LLC Through Johnson Controls Navy Systems, LLC Top agencies DLA (Defense Logistics Agency)	$129,935	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
52	Auxiliary Systems Inc. Top agencies Navy (Department of the Navy)	$121,976	<0.1%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
53	Percipient Manufacturing, LLC Top agencies DLA (Defense Logistics Agency)	$117,780	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
54	Dynalec Corporation Top agencies Navy (Department of the Navy)	$115,550	<0.1%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; new, not ranked in Aug 2024–Jul 2025.
55	KJU Maintenance Ltd Top agencies DOS (Department of State)	$111,117	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
56	TECH Nexuses, Inc. Top agencies DOJ (Department of Justice)	$110,481	<0.1%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; new, not ranked in Aug 2024–Jul 2025.
57	Seventh Genius LLC Top agencies DOI (Department of the Interior)	$108,600	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
58	Pride Electronics Inc. Top agencies DLA (Defense Logistics Agency)	$106,400	<0.1%	Rank history: not on the FY2021–FY2024 lists and #75 in FY2025; new, not ranked in Aug 2024–Jul 2025.
59	Mainstream Fluid & Air LLC Top agencies Treasury (Department of the Treasury)	$97,390	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
60	Irsa Umar Top agencies USAF (Department of the Air Force)	$96,536	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
61	Bollinger Shipyards Lockport, L.L.C. Through Chand, L.L.C. Top agencies DLA (Defense Logistics Agency)	$96,079	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
62	The Blackledge Group, Inc. Top agencies DHS (Department of Homeland Security)	$95,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; new, not ranked in Aug 2024–Jul 2025.
63	Warrior Dynamics LLC Top agencies VA (Department of Veterans Affairs)	$94,353	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
64	Industrial Heat Technologies, Inc. Top agencies DOJ (Department of Justice)	$87,789	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 36 since Aug 2024–Jul 2025.
65	Dt-Trak Consulting, Inc. Top agencies DOI (Department of the Interior)	$82,283	<0.1%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; new, not ranked in Aug 2024–Jul 2025.
66	Cornet Technology, Inc. Top agencies Navy (Department of the Navy)	$72,758	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
67	Marotta Controls Inc. Top agencies Navy (Department of the Navy)	$72,160	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
68	I-2-I Solutions, Inc. Top agencies USAF (Department of the Air Force)	$69,420	<0.1%	Rank history: not on the FY2021–FY2024 lists and #82 in FY2025; new, not ranked in Aug 2024–Jul 2025.
69	F.w. Webb Company Top agencies DOJ (Department of Justice)	$68,445	<0.1%	Rank history: not on the FY2021 list, #48 in FY2022, #46 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
70	Maxim Evaporators of America, LLC Top agencies DLA (Defense Logistics Agency)	$65,066	<0.1%	Rank history: not on the FY2021–FY2024 lists and #22 in FY2025; up 89 since Aug 2024–Jul 2025.
71	Aeromed Group, LLC Through Norcatec LLC Top agencies Navy (Department of the Navy)	$60,816	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
72	Metro Reliable Resources Corp. Top agencies DLA (Defense Logistics Agency)	$59,998	<0.1%	Rank history: #43 in FY2021, not on the FY2022–FY2023 lists, #51 in FY2024 and not on the FY2025 list; up 39 since Aug 2024–Jul 2025.
73	Results Sales & Service, L.L.C. Top agencies VA (Department of Veterans Affairs)	$58,325	<0.1%	Rank history: not on the FY2021–FY2024 lists and #65 in FY2025; up 11 since Aug 2024–Jul 2025.
74	Kay Kay LLC Top agencies VA (Department of Veterans Affairs)	$53,040	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 52 since Aug 2024–Jul 2025.
75	Campbell-Sevey Inc. Top agencies VA (Department of Veterans Affairs)	$50,733	<0.1%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; new, not ranked in Aug 2024–Jul 2025.
76	NCH Corporation Through Chem-Aqua Inc. Top agencies VA (Department of Veterans Affairs)	$50,139	<0.1%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; up 47 since Aug 2024–Jul 2025.
77	Hydraulics International, Inc. Top agencies DLA (Defense Logistics Agency)	$46,830	<0.1%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; down 5 since Aug 2024–Jul 2025.
78	Waddell Electric Motor Service LLC Top agencies DOJ (Department of Justice)	$43,365	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
79	Ray Blackman Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$42,604	<0.1%	Rank history: not on the FY2021 list, #44 in FY2022, not on the FY2023–FY2024 lists and #61 in FY2025; down 22 since Aug 2024–Jul 2025.
80	Leonardo S.p.A. 3 awardees, including Pivotal Power Inc. Top agencies Navy (Department of the Navy)	$39,587	<0.1%	Rank history: not on the FY2021–FY2024 lists and #16 in FY2025; down 56 since Aug 2024–Jul 2025.
81	Paul Mueller Company Top agencies Navy (Department of the Navy)	$39,207	<0.1%	Rank history: #58 in FY2021, not on the FY2022–FY2023 lists, #26 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
82	A. James Global Services, Inc. Top agencies DHS (Department of Homeland Security)	$38,478	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
83	The Timken Company Top agencies Navy (Department of the Navy)	$37,158	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
84	Integrated Procurement Technologies Top agencies DLA (Defense Logistics Agency)	$35,362	<0.1%	Rank history: #17 in FY2021, not on the FY2022–FY2024 lists and #83 in FY2025; new, not ranked in Aug 2024–Jul 2025.
85	Painter Tool Incorporated Top agencies Navy (Department of the Navy)	$34,860	<0.1%	Rank history: #25 in FY2021 and not on the FY2022–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
86	Unique Technology Systems LLC Top agencies DHS (Department of Homeland Security)	$34,795	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
87	GI Corporation Top agencies DLA (Defense Logistics Agency)	$34,396	<0.1%	Rank history: not on the FY2021–FY2023 lists, #76 in FY2024 and #86 in FY2025; down 9 since Aug 2024–Jul 2025.
88	Bernard J. Mulcahy Company, Inc. Top agencies VA (Department of Veterans Affairs)	$33,934	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
89	Piccolin Italo S.R.L. Top agencies Army (Department of the Army)	$33,485	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
90	Vetpowered LLC Top agencies Navy (Department of the Navy)	$33,032	<0.1%	Rank history: not on the FY2021–FY2023 lists, #17 in FY2024 and not on the FY2025 list; down 65 since Aug 2024–Jul 2025.
91	Govparts LLC Top agencies DLA (Defense Logistics Agency)	$32,736	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
92	SZY Holdings, LLC Top agencies DLA (Defense Logistics Agency)	$32,493	<0.1%	Rank history: not on the FY2021 list, #89 in FY2022, not on the FY2023–FY2024 lists and #60 in FY2025; down 37 since Aug 2024–Jul 2025.
93	Blackmer East Coast Repair Center Top agencies Navy (Department of the Navy)	$31,892	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
94	TIM Hildreth Company Top agencies USDA (Department of Agriculture)	$31,228	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
95	Z and K Services Inc. Top agencies DLA (Defense Logistics Agency)	$28,792	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
96	Advance Safety Equipment Co. Top agencies Navy (Department of the Navy)	$28,533	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
97	Fed Crew Inc. Top agencies DHS (Department of Homeland Security)	$28,153	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
98	Southern Refrigeration Corporation Top agencies Navy (Department of the Navy)	$28,000	<0.1%	Rank history: #87 in FY2021 and not on the FY2022–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
99	RTX Corporation Through Hamilton Sundstrand Corporation Top agencies Navy (Department of the Navy)	$27,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
100	Federal Signal Corp Through Jetstream of Houston, LLP Top agencies Navy (Department of the Navy)	$26,466	<0.1%	Rank history: not on the FY2021 list, #92 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.

Rankings for the codes under NAICS 33241

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 $2.26 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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.
• Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
• Rank changes compare with Aug 2024–Jul 2025. "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.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers