Top 100 Contractors in PSC 6680: Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments, FY2021

Name: Top 100 Contractors in PSC 6680: Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments, FY2021
Creator: GovTribe

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

The top 10 won 38% of FY2021 PSC 6680 contract dollars

Contract obligations: $65,226,365 Net of deobligations, by contracts coded PSC 6680
Contractors: 476 Parent companies with an obligation
Largest contractor: RTX Corporation $6.63 million, 9.8% 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	RTX Corporation 6 awardees, including Simmonds Precision Products Inc., Rosemount Aerospace Inc. and Hornet Acquisitionco, LLC Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$6,629,790	9.8%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #2 in FY2025; unchanged since FY2020.
2	Parker-Hannifin Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$4,773,262	7.1%	Rank history: #2 in FY2022, #3 in FY2023, #23 in FY2024 and not on the FY2025 list; unchanged since FY2020.
3	R. S. Means Company LLC 4 awardees, including Setra Systems, Inc., Fluke Electronics Corp and Industrial Scientific Corporation Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$3,327,605	4.9%	Rank history: #3 in FY2022, #6 in FY2023, #48 in FY2024 and not on the FY2025 list; up 10 since FY2020.
4	RIX Industries Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$2,000,153	3.0%	Rank history: not on the FY2022–FY2025 lists; up 152 since FY2020.
5	Jamaica Bearings Co., Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,891,589	2.8%	Rank history: #11 in FY2022, #12 in FY2023, #11 in FY2024 and #34 in FY2025; up 20 since FY2020.
6	Standard Calibrations Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,794,882	2.7%	Rank history: #5 in FY2022, #2 in FY2023, #2 in FY2024 and #1 in FY2025; up 8 since FY2020.
7	Martin Military Inc. Top agencies DLA (Defense Logistics Agency)	$1,533,339	2.3%	Rank history: #6 in FY2022, #4 in FY2023, #6 in FY2024 and #16 in FY2025; up 11 since FY2020.
8	H C Merchandisers, Inc. Top agencies DLA (Defense Logistics Agency)	$1,447,931	2.1%	Rank history: #10 in FY2022, #29 in FY2023, #18 in FY2024 and #14 in FY2025; up 12 since FY2020.
9	Strube Inc. Top agencies DLA (Defense Logistics Agency)	$1,320,797	2.0%	Rank history: #48 in FY2022 and not on the FY2023–FY2025 lists; up 22 since FY2020.
10	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,280,890	1.9%	Rank history: #7 in FY2022, #14 in FY2023, #19 in FY2024 and #12 in FY2025; up 1 since FY2020.
11	Aarcorp Through AAR Supply Chain, Inc. Top agencies DLA (Defense Logistics Agency)	$1,195,517	1.8%	Rank history: #13 in FY2022, #9 in FY2023, #21 in FY2024 and not on the FY2025 list; down 6 since FY2020.
12	Thermo Electron Corporation Through Thermo Electron North America LLC Top agencies DOI (Department of the Interior)	$1,183,730	1.8%	Rank history: not on the FY2022–FY2025 lists; up 115 since FY2020.
13	GMS International Corporation Top agencies DLA (Defense Logistics Agency)	$1,075,743	1.6%	Rank history: #12 in FY2022, #17 in FY2023, #17 in FY2024 and #13 in FY2025; up 79 since FY2020.
14	Pssc Holding Co. Through BEI Precision Systems & Space Company, Inc. Top agencies DLA (Defense Logistics Agency)	$1,032,048	1.5%	Rank history: #26 in FY2022, #10 in FY2023, #29 in FY2024 and not on the FY2025 list; up 9 since FY2020.
15	Airtronics, LLC Top agencies DLA (Defense Logistics Agency)	$899,680	1.3%	Rank history: #76 in FY2022, not on the FY2023 list, #26 in FY2024 and #89 in FY2025; up 143 since FY2020.
16	Mark Electronics Inc. Top agencies DLA (Defense Logistics Agency)	$869,905	1.3%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
17	Nag, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$834,578	1.2%	Rank history: #16 in FY2022, #16 in FY2023, #27 in FY2024 and #6 in FY2025; up 394 since FY2020.
18	Integrated Procurement Technologies Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$765,587	1.1%	Rank history: not on the FY2022–FY2025 lists; up 403 since FY2020.
19	S I T Corporation Top agencies DLA (Defense Logistics Agency)	$731,611	1.1%	Rank history: #19 in FY2022, #78 in FY2023, #36 in FY2024 and #28 in FY2025; up 16 since FY2020.
20	Transaero, Inc. Top agencies DLA (Defense Logistics Agency)	$692,736	1.0%	Rank history: #4 in FY2022, #7 in FY2023, #4 in FY2024 and #5 in FY2025; up 119 since FY2020.
21	TNL Sales LLC Top agencies DLA (Defense Logistics Agency)	$683,853	1.0%	Rank history: #18 in FY2022, #22 in FY2023, #8 in FY2024 and #17 in FY2025; up 39 since FY2020.
22	DSP Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$652,185	1.0%	Rank history: #47 in FY2022, #31 in FY2023, #44 in FY2024 and #99 in FY2025; up 10 since FY2020.
23	Aerolab LLC Top agencies Navy (Department of the Navy)	$632,955	0.9%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
24	Synercom Inc Through Spectrum Associates, Inc. Top agencies DLA (Defense Logistics Agency)	$620,598	0.9%	Rank history: #9 in FY2022, #33 in FY2023, #22 in FY2024 and not on the FY2025 list; down 5 since FY2020.
25	Compuflow Solutions LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$559,806	0.8%	Rank history: not on the FY2022–FY2023 lists, #65 in FY2024 and #26 in FY2025; new, not ranked in FY2020.
26	TE Connectivity Corporation 2 awardees, including Measurement Specialties Inc. Top agencies Navy (Department of the Navy) DOI (Department of the Interior)	$524,164	0.8%	Rank history: #34 in FY2022 and not on the FY2023–FY2025 lists; up 18 since FY2020.
27	SSI Technology Inc. Top agencies DLA (Defense Logistics Agency)	$510,800	0.8%	Rank history: #63 in FY2022, #15 in FY2023, #24 in FY2024 and #44 in FY2025; down 19 since FY2020.
28	Stag Enterprise, Inc. Top agencies Navy (Department of the Navy)	$488,980	0.7%	Rank history: not on the FY2022–FY2025 lists; up 191 since FY2020.
29	The Entwistle Trust Through The Entwistle Company LLC Top agencies DLA (Defense Logistics Agency)	$459,830	0.7%	Rank history: #14 in FY2022, #27 in FY2023 and not on the FY2024–FY2025 lists; up 78 since FY2020.
30	Northrop Grumman Corporation 2 awardees, including Northrop Grumman Systems Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$436,200	0.6%	Rank history: #67 in FY2022, not on the FY2023 list, #55 in FY2024 and #18 in FY2025; up 39 since FY2020.
31	Shiloh Industries Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$434,453	0.6%	Rank history: not on the FY2022–FY2023 lists, #54 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
32	A.G. Davis Gage & Engineering Co. Top agencies USAF (Department of the Air Force)	$416,820	0.6%	Rank history: #15 in FY2022 and not on the FY2023–FY2025 lists; down 26 since FY2020.
33	Marine Electric Systems Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$416,688	0.6%	Rank history: #28 in FY2022, #19 in FY2023, #38 in FY2024 and #19 in FY2025; down 21 since FY2020.
34	Global Logistics Strategies Inc. Top agencies DLA (Defense Logistics Agency)	$415,027	0.6%	Rank history: #100 in FY2022, #58 in FY2023, #7 in FY2024 and #20 in FY2025; down 10 since FY2020.
35	Phoenix Trading Inc. Top agencies DLA (Defense Logistics Agency)	$413,430	0.6%	Rank history: #38 in FY2022, #35 in FY2023 and not on the FY2024–FY2025 lists; up 37 since FY2020.
36	Howe Machine & Tool Corp. Top agencies DLA (Defense Logistics Agency)	$405,177	0.6%	Rank history: #31 in FY2022 and not on the FY2023–FY2025 lists; up 222 since FY2020.
37	Instrumart LLC Top agencies DLA (Defense Logistics Agency)	$393,577	0.6%	Rank history: not on the FY2022–FY2025 lists; up 295 since FY2020.
38	General Electric Company 3 awardees Top agencies DLA (Defense Logistics Agency)	$387,056	0.6%	Rank history: not on the FY2022 list, #75 in FY2023, #40 in FY2024 and #92 in FY2025; down 8 since FY2020.
39	Danaher Corporation 4 awardees, including Pall Aeropower Corporation, OTT Hydromet Corp and Hach Company Top agencies DOI (Department of the Interior) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$346,289	0.5%	Rank history: #62 in FY2022 and not on the FY2023–FY2025 lists; down 22 since FY2020.
40	L3Harris Technologies, Inc. 3 awardees, including L3 Technologies, Inc. and Electrodynamics Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$333,321	0.5%	Rank history: #24 in FY2022, #39 in FY2023, #73 in FY2024 and #49 in FY2025; new, not ranked in FY2020.
41	Statz Corp Top agencies DLA (Defense Logistics Agency)	$333,318	0.5%	Rank history: #61 in FY2022, #25 in FY2023, #84 in FY2024 and not on the FY2025 list; down 26 since FY2020.
42	Clark Brothers Instrument Co Top agencies DLA (Defense Logistics Agency)	$321,435	0.5%	Rank history: #85 in FY2022, #77 in FY2023, #85 in FY2024 and #50 in FY2025; up 24 since FY2020.
43	Dreamfind, Inc. Top agencies DLA (Defense Logistics Agency)	$313,289	0.5%	Rank history: not on the FY2022 list, #83 in FY2023 and not on the FY2024–FY2025 lists; up 52 since FY2020.
44	Spectris PLC 2 awardees, including Hottinger Bruel & Kjaer Inc. Top agencies Navy (Department of the Navy)	$307,400	0.5%	Rank history: #30 in FY2022, #30 in FY2023 and not on the FY2024–FY2025 lists; down 34 since FY2020.
45	Erdco Engineering Corporation Top agencies DLA (Defense Logistics Agency)	$305,317	0.5%	Rank history: #54 in FY2022, #87 in FY2023, #39 in FY2024 and not on the FY2025 list; up 116 since FY2020.
46	Westbase Inc Through Phaostron Instrument and Electronic Company Top agencies DLA (Defense Logistics Agency)	$304,251	0.5%	Rank history: #50 in FY2022, #23 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
47	Polytec Gesellschaft FUR Analysen- MES- & Regel-Technik MBH Through Polytec, Inc. Top agencies Navy (Department of the Navy)	$303,350	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
48	Federal Resources Supply Company Top agencies DLA (Defense Logistics Agency)	$299,287	0.4%	Rank history: not on the FY2022–FY2025 lists; up 101 since FY2020.
49	Bowmar LLC Top agencies DLA (Defense Logistics Agency)	$295,021	0.4%	Rank history: not on the FY2022 list, #32 in FY2023, not on the FY2024 list and #97 in FY2025; down 21 since FY2020.
50	Water Monitoring Solutions, Inc. Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$287,215	0.4%	Rank history: #73 in FY2022 and not on the FY2023–FY2025 lists; up 264 since FY2020.
51	RAS Enterprises LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$284,749	0.4%	Rank history: not on the FY2022–FY2025 lists; down 14 since FY2020.
52	Donaldson Company, Inc. Top agencies DLA (Defense Logistics Agency)	$278,400	0.4%	Rank history: not on the FY2022 list, #95 in FY2023 and not on the FY2024–FY2025 lists; up 90 since FY2020.
53	Jag Components, LLC Top agencies DLA (Defense Logistics Agency)	$269,435	0.4%	Rank history: not on the FY2022–FY2023 lists, #64 in FY2024 and #95 in FY2025; up 115 since FY2020.
54	Wbb, Inc. Top agencies DLA (Defense Logistics Agency)	$268,107	0.4%	Rank history: #83 in FY2022, #88 in FY2023 and not on the FY2024–FY2025 lists; down 25 since FY2020.
55	Stealth Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$258,259	0.4%	Rank history: not on the FY2022–FY2023 lists, #31 in FY2024 and #47 in FY2025; down 12 since FY2020.
56	Trevose Industrial Products Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$235,652	0.3%	Rank history: not on the FY2022 list, #92 in FY2023 and not on the FY2024–FY2025 lists; up 46 since FY2020.
57	Cameron Technologies US Inc. 2 awardees Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$222,457	0.3%	Rank history: not on the FY2022–FY2025 lists; down 53 since FY2020.
58	Isotopx Inc. Top agencies DOI (Department of the Interior)	$221,716	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
59	Granzow Holding APS Through Granzow, Inc. Top agencies DLA (Defense Logistics Agency)	$212,947	0.3%	Rank history: #69 in FY2022, #69 in FY2023 and not on the FY2024–FY2025 lists; up 59 since FY2020.
60	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency)	$207,750	0.3%	Rank history: #27 in FY2022, #84 in FY2023, #41 in FY2024 and #37 in FY2025; down 10 since FY2020.
61	The Boeing Company 4 awardees, including Boeing Distribution Services X, Inc. and Boeing Distribution, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$204,589	0.3%	Rank history: not on the FY2022–FY2025 lists; up 28 since FY2020.
62	Meggitt PLC 3 awardees, including Meggitt (Orange County), Inc., Meggitt Aerospace Limited and Pacific Scientific Company Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$202,153	0.3%	Rank history: #55 in FY2022 and not on the FY2023–FY2025 lists; down 29 since FY2020.
63	Habco Industries LLC Top agencies DLA (Defense Logistics Agency)	$201,500	0.3%	Rank history: not on the FY2022–FY2025 lists; up 84 since FY2020.
64	Ludwig Krohne GMBH & Co. KG Through Krohne, Inc. Top agencies Navy (Department of the Navy)	$200,252	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
65	Coast To Coast Aerospace, LLC Top agencies DLA (Defense Logistics Agency)	$199,554	0.3%	Rank history: #39 in FY2022 and not on the FY2023–FY2025 lists; down 9 since FY2020.
66	Advanced Products Services Inc. Top agencies DLA (Defense Logistics Agency)	$195,062	0.3%	Rank history: #44 in FY2022, #40 in FY2023, not on the FY2024 list and #86 in FY2025; down 25 since FY2020.
67	Vermont Photonics Technologies Corp Top agencies USAF (Department of the Air Force)	$189,408	0.3%	Rank history: not on the FY2022–FY2025 lists; up 121 since FY2020.
68	Westsim Engineering, Inc. Top agencies DLA (Defense Logistics Agency)	$186,730	0.3%	Rank history: #68 in FY2022, not on the FY2023–FY2024 lists and #57 in FY2025; up 32 since FY2020.
69	Brandamar, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$185,813	0.3%	Rank history: #80 in FY2022 and not on the FY2023–FY2025 lists; down 10 since FY2020.
70	Patriot3, Inc. Top agencies Navy (Department of the Navy)	$181,380	0.3%	Rank history: not on the FY2022–FY2025 lists; up 5 since FY2020.
71	Allient Inc. Through Globe Motors, Inc. Top agencies DLA (Defense Logistics Agency)	$180,528	0.3%	Rank history: #82 in FY2022, not on the FY2023 list, #87 in FY2024 and not on the FY2025 list; up 70 since FY2020.
72	Industrial Automation Inc. Top agencies Navy (Department of the Navy)	$179,017	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
73	Seiler Instrument and Manufacturing Company, Incorporated Top agencies DLA (Defense Logistics Agency)	$172,043	0.3%	Rank history: not on the FY2022–FY2025 lists; up 344 since FY2020.
74	Brighton Cromwell LLC Top agencies DLA (Defense Logistics Agency)	$163,453	0.2%	Rank history: not on the FY2022–FY2025 lists; up 24 since FY2020.
75	Janels Industries Inc. Top agencies DLA (Defense Logistics Agency)	$163,297	0.2%	Rank history: #35 in FY2022, #20 in FY2023, #50 in FY2024 and not on the FY2025 list; up 75 since FY2020.
76	Empire Avionics Corp. Top agencies DLA (Defense Logistics Agency)	$161,745	0.2%	Rank history: not on the FY2022 list, #91 in FY2023, #77 in FY2024 and not on the FY2025 list; up 132 since FY2020.
77	Science Applications International Corporation Through Asrc Federal Facilities Logistics, LLC Top agencies DLA (Defense Logistics Agency)	$159,427	0.2%	Rank history: not on the FY2022–FY2025 lists; down 22 since FY2020.
78	C-Lock, Inc. Top agencies USDA (Department of Agriculture)	$157,080	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
79	Worldwide Equipment Enterprises Inc. Through Worldwide Equipment Inc. Top agencies DLA (Defense Logistics Agency)	$154,350	0.2%	Rank history: #25 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
80	Fuel Systems Inc. Top agencies DLA (Defense Logistics Agency)	$152,701	0.2%	Rank history: not on the FY2022 list, #90 in FY2023, #82 in FY2024 and not on the FY2025 list; up 34 since FY2020.
81	Aerospace Control Products, Inc. Top agencies Navy (Department of the Navy)	$152,000	0.2%	Rank history: not on the FY2022–FY2025 lists; up 253 since FY2020.
82	Sogen Company, Inc. Top agencies DLA (Defense Logistics Agency)	$149,533	0.2%	Rank history: not on the FY2022–FY2025 lists; up 54 since FY2020.
83	Lynn Electronics LLC Top agencies DLA (Defense Logistics Agency)	$148,051	0.2%	Rank history: #41 in FY2022 and not on the FY2023–FY2025 lists; down 26 since FY2020.
84	Johnson Controls Security Solutions LLC Through Johnson Controls Navy Systems, LLC Top agencies DLA (Defense Logistics Agency)	$147,648	0.2%	Rank history: #53 in FY2022, #65 in FY2023 and not on the FY2024–FY2025 lists; down 13 since FY2020.
85	Eagle Home Medical Corp Top agencies VA (Department of Veterans Affairs)	$146,734	0.2%	Rank history: #33 in FY2022 and not on the FY2023–FY2025 lists; down 17 since FY2020.
86	Franklin Young International, Incorporated Top agencies DOI (Department of the Interior)	$145,895	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
87	General Dynamics Corporation 4 awardees, including Electric Boat Corporation, General Dynamics Mission Systems, Inc. and General Dynamics Land Systems - Canada Corporation Top agencies DLA (Defense Logistics Agency)	$142,152	0.2%	Rank history: #71 in FY2022, not on the FY2023–FY2024 lists and #96 in FY2025; up 67 since FY2020.
88	Hydraulics International, Inc. Top agencies DLA (Defense Logistics Agency)	$138,301	0.2%	Rank history: #81 in FY2022, #64 in FY2023, #59 in FY2024 and #60 in FY2025; down 15 since FY2020.
89	Nortekusa, Inc. Top agencies DOI (Department of the Interior)	$137,444	0.2%	Rank history: not on the FY2022–FY2025 lists; up 179 since FY2020.
90	The Technology Group, LLC Top agencies DLA (Defense Logistics Agency)	$135,717	0.2%	Rank history: #74 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
91	EHB Supply Top agencies Navy (Department of the Navy)	$134,174	0.2%	Rank history: not on the FY2022–FY2025 lists; up 273 since FY2020.
92	Rfcircuits, Inc. Top agencies DLA (Defense Logistics Agency)	$130,156	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
93	Larkos Packing and Distribution Inc. Top agencies DLA (Defense Logistics Agency)	$126,894	0.2%	Rank history: #57 in FY2022, #67 in FY2023, #32 in FY2024 and #23 in FY2025; up 3 since FY2020.
94	Powerjet Parts Inc. Top agencies DLA (Defense Logistics Agency)	$126,000	0.2%	Rank history: #86 in FY2022, #47 in FY2023, #35 in FY2024 and #72 in FY2025; new, not ranked in FY2020.
95	Parts Life Inc. Top agencies Navy (Department of the Navy)	$124,138	0.2%	Rank history: not on the FY2022–FY2024 lists and #80 in FY2025; new, not ranked in FY2020.
96	Advanced Control Technology Inc. Top agencies DLA (Defense Logistics Agency)	$122,709	0.2%	Rank history: not on the FY2022–FY2023 lists, #100 in FY2024 and not on the FY2025 list; down 44 since FY2020.
97	Crane Co Through Hydro-Aire Aerospace Corp Top agencies DLA (Defense Logistics Agency)	$122,031	0.2%	Rank history: #65 in FY2022, #59 in FY2023, #62 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
98	Firstmark Aerospace Corp Top agencies DLA (Defense Logistics Agency)	$121,710	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	Kelly Manufacturing Company Top agencies DLA (Defense Logistics Agency)	$121,335	0.2%	Rank history: not on the FY2022 list, #89 in FY2023, #83 in FY2024 and not on the FY2025 list; up 30 since FY2020.
100	Oshkosh Corp 2 awardees, including Oshkosh Defense LLC and JLG Industries, Inc. Top agencies DLA (Defense Logistics Agency)	$119,428	0.2%	Rank history: #58 in FY2022, #72 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.

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100 of 476 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 $67.6 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 6680 contractors in FY2021?

1. RTX Corporation ($6.63M), 2. Parker-Hannifin Corporation ($4.77M), 3. R. S. Means Company LLC ($3.33M), 4. RIX Industries ($2M), 5. Jamaica Bearings Co., Inc. ($1.89M), 6. Standard Calibrations Inc. ($1.79M), 7. Martin Military Inc. ($1.53M), 8. H C Merchandisers, Inc. ($1.45M), 9. Strube Inc. ($1.32M), 10. Kampi Components Co Inc. ($1.28M).

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