Top 48 Contractors in PSC 4470: Nuclear Reactors, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Bechtel Corp Through Bechtel Plant Machinery, Inc. Top agencies Navy (Department of the Navy)	$2,000,472,737	57.2%	Rank history: #1 in FY2022, #2 in FY2023, #2 in FY2024 and #5 in FY2025; up 2 since FY2020.
2	Fluor Corporation Through Fluor Marine Propulsion, LLC Top agencies Navy (Department of the Navy)	$1,437,730,961	41.1%	Rank history: #2 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since FY2020.
3	Westinghouse Electric Company LLC Through Westinghouse Government Services LLC Top agencies DOE (Department of Energy)	$16,846,555	0.5%	Rank history: #4 in FY2022, #5 in FY2023, #8 in FY2024 and not on the FY2025 list; up 4 since FY2020.
4	General Dynamics Corporation Through Electric Boat Corporation Top agencies Navy (Department of the Navy)	$15,673,557	0.4%	Rank history: #3 in FY2022, #3 in FY2023, #4 in FY2024 and #3 in FY2025; up 2 since FY2020.
5	Huntington Ingalls Industries, Inc. Through Huntington Ingalls Inc. Top agencies Navy (Department of the Navy)	$9,935,777	0.3%	Rank history: #5 in FY2022, #6 in FY2023, #7 in FY2024 and #6 in FY2025; up 3 since FY2020.
6	Curtiss-Wright Corporation Through Peerless Instrument Co., Inc. Top agencies Navy (Department of the Navy)	$1,704,146	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 31 since FY2020.
7	Lancs Industries Operating LLC Top agencies Navy (Department of the Navy)	$1,652,007	<0.1%	Rank history: #24 in FY2022, not on the FY2023 list, #16 in FY2024 and not on the FY2025 list; up 13 since FY2020.
8	Esco Technologies Inc. Through Vacco Industries Top agencies Navy (Department of the Navy)	$1,155,490	<0.1%	Rank history: not on the FY2022 list, #8 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
9	Kearny Steel Container Corp Top agencies Navy (Department of the Navy)	$1,119,300	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 7 since FY2020.
10	Dibert Valve and Fitting Company, Incorporated 2 awardees Top agencies Navy (Department of the Navy)	$934,507	<0.1%	Rank history: #10 in FY2022, #11 in FY2023, #28 in FY2024 and #18 in FY2025; unchanged since FY2020.
11	Painter Tool Incorporated Top agencies Navy (Department of the Navy)	$704,548	<0.1%	Rank history: #11 in FY2022, #12 in FY2023, #20 in FY2024 and #24 in FY2025; up 11 since FY2020.
12	Genuine Parts Company Through Motion Industries, Inc. Top agencies Navy (Department of the Navy)	$687,106	<0.1%	Rank history: #8 in FY2022, #9 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
13	Thomas-Guy Limited Through Waltron Bull & Roberts, LLC Top agencies Navy (Department of the Navy)	$445,575	<0.1%	Rank history: #6 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
14	Adirondack Electronics Inc. Top agencies Navy (Department of the Navy)	$225,997	<0.1%	Rank history: #19 in FY2022, #25 in FY2023, #17 in FY2024 and #25 in FY2025; up 13 since FY2020.
15	General Nuclear Corp Top agencies Navy (Department of the Navy)	$221,910	<0.1%	Rank history: #21 in FY2022, #13 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2020.
16	Nasco Aerospace and Electronics LLC Top agencies Navy (Department of the Navy)	$219,423	<0.1%	Rank history: #27 in FY2022, #26 in FY2023, #19 in FY2024 and not on the FY2025 list; up 12 since FY2020.
17	Fluidyne Corporation Top agencies Navy (Department of the Navy)	$177,173	<0.1%	Rank history: #17 in FY2022, #28 in FY2023, #15 in FY2024 and #19 in FY2025; up 18 since FY2020.
18	Marine Electric Systems Inc. Top agencies Navy (Department of the Navy)	$171,108	<0.1%	Rank history: #9 in FY2022, #22 in FY2023, #27 in FY2024 and #29 in FY2025; up 1 since FY2020.
19	U.s.a. Spares Inc. Top agencies Navy (Department of the Navy)	$161,615	<0.1%	Rank history: #22 in FY2022, #18 in FY2023, #26 in FY2024 and #21 in FY2025; up 5 since FY2020.
20	In Speck Corp Top agencies Navy (Department of the Navy)	$130,956	<0.1%	Rank history: #32 in FY2022, #23 in FY2023, #33 in FY2024 and #23 in FY2025; down 3 since FY2020.
21	ISA (Wyoming) Corp Top agencies Navy (Department of the Navy)	$105,970	<0.1%	Rank history: #14 in FY2022, #36 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2020.
22	Kampi Components Co Inc. Top agencies Navy (Department of the Navy)	$92,618	<0.1%	Rank history: not on the FY2022 list, #27 in FY2023, #18 in FY2024 and #26 in FY2025; new, not ranked in FY2020.
23	Corestar International Corporation 2 awardees Top agencies Navy (Department of the Navy)	$89,008	<0.1%	Rank history: #29 in FY2022, not on the FY2023 list, #21 in FY2024 and #13 in FY2025; up 8 since FY2020.
24	A.m.s. Network, LLC Top agencies Navy (Department of the Navy)	$77,209	<0.1%	Rank history: #36 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
25	Rich Industries Inc. Top agencies Navy (Department of the Navy)	$72,264	<0.1%	Rank history: #25 in FY2022, #19 in FY2023, #13 in FY2024 and #16 in FY2025; up 7 since FY2020.
26	L.r.g. Corporation Top agencies Navy (Department of the Navy)	$60,750	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
27	Warren Pumps LLC Through Circor Naval Solutions LLC Top agencies Navy (Department of the Navy)	$55,680	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
28	Skovira Machine Co Top agencies Navy (Department of the Navy)	$53,726	<0.1%	Rank history: #20 in FY2022, #21 in FY2023, #23 in FY2024 and #10 in FY2025; down 15 since FY2020.
29	Homewood Products Corp Top agencies Navy (Department of the Navy)	$49,500	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
30	Dresser-Argus, Inc. Top agencies Navy (Department of the Navy)	$44,250	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
31	Linmarr Associates, Inc. Top agencies Navy (Department of the Navy)	$40,035	<0.1%	Rank history: #37 in FY2022, #20 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
32	Weckworth Manufacturing, Inc. Top agencies Navy (Department of the Navy)	$34,542	<0.1%	Rank history: #47 in FY2022, not on the FY2023 list, #32 in FY2024 and #43 in FY2025; up 6 since FY2020.
33	Orlotronics Corp Top agencies Navy (Department of the Navy)	$16,645	<0.1%	Rank history: #40 in FY2022 and not on the FY2023–FY2025 lists; down 10 since FY2020.
34	Greater Maryland Tool & Mfg. Corp. Top agencies Navy (Department of the Navy)	$14,771	<0.1%	Rank history: #26 in FY2022, #16 in FY2023, #44 in FY2024 and #32 in FY2025; up 2 since FY2020.
35	Larkos Packing and Distribution Inc. Top agencies Navy (Department of the Navy)	$13,025	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
36	Beach Electronics & Manufacturing, Inc. Top agencies Navy (Department of the Navy)	$12,737	<0.1%	Rank history: #53 in FY2022, #32 in FY2023 and not on the FY2024–FY2025 lists; down 24 since FY2020.
37	BEC Systems LLC Top agencies Navy (Department of the Navy)	$10,483	<0.1%	Rank history: #23 in FY2022, not on the FY2023–FY2024 lists and #33 in FY2025; up 10 since FY2020.
38	MDF Technologies Inc. Top agencies Navy (Department of the Navy)	$10,074	<0.1%	Rank history: not on the FY2022 list, #29 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
39	Derbyshire Machine & Tool Co Top agencies Navy (Department of the Navy)	$7,816	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
40	Leonardo S.p.A. Through DRS Naval Power Systems Inc. Top agencies Navy (Department of the Navy)	$7,550	<0.1%	Rank history: #35 in FY2022, not on the FY2023 list, #36 in FY2024 and #20 in FY2025; new, not ranked in FY2020.
41	Peerless Instrument Co., Inc. Top agencies Navy (Department of the Navy)	$6,162	<0.1%	Rank history: not on the FY2022–FY2023 lists, #10 in FY2024 and #11 in FY2025; up 14 since FY2020.
42	Gaffel Equipment Top agencies Navy (Department of the Navy)	$2,475	<0.1%	Rank history: #38 in FY2022, #38 in FY2023, #35 in FY2024 and #42 in FY2025; down 1 since FY2020.
43	Basic Rubber and Plastics Co. Top agencies Navy (Department of the Navy)	$963	<0.1%	Rank history: not on the FY2022–FY2023 lists, #43 in FY2024 and #48 in FY2025; up 2 since FY2020.
44	Griswold Industries Top agencies Navy (Department of the Navy)	$632	<0.1%	Rank history: #57 in FY2022, #40 in FY2023, not on the FY2024 list and #44 in FY2025; up 13 since FY2020.
45	Daniels Manufacturing Corporation Top agencies Navy (Department of the Navy)	$421	<0.1%	Rank history: #50 in FY2022, #31 in FY2023, #40 in FY2024 and #47 in FY2025; up 11 since FY2020.
46	III Williams LLC Top agencies Navy (Department of the Navy)	$410	<0.1%	Rank history: not on the FY2022 list, #44 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
47	Sealing Specialists & Service Co Top agencies Navy (Department of the Navy)	$338	<0.1%	Rank history: #51 in FY2022, #45 in FY2023, #41 in FY2024 and #45 in FY2025; new, not ranked in FY2020.
48	Era Industrial Sales Corp Top agencies DLA (Defense Logistics Agency)	$61	<0.1%	Rank history: not on the FY2022–FY2024 lists and #50 in FY2025; new, not ranked in FY2020.

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 $3.5 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 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