Top 100 Contractors in NAICS 33351: Metalworking Machinery Manufacturing, FY2021

Name: Top 100 Contractors in NAICS 33351: Metalworking Machinery Manufacturing, FY2021
Creator: GovTribe

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

The top 10 won 48% of FY2021 NAICS 33351 contract dollars

Contract obligations: $266,570,230 Net of deobligations, by contracts coded NAICS 33351 or a code under it
Contractors: 694 Parent companies with an obligation
Largest contractor: Machine Tool Research, Inc. $28 million, 10.3% 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	Machine Tool Research, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$28,015,880	10.3%	Rank history: not on the FY2022–FY2023 lists, #2 in FY2024 and #3 in FY2025; up 93 since FY2020.
2	Hartech Group LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$20,310,182	7.5%	Rank history: #4 in FY2022, #2 in FY2023, #1 in FY2024 and #1 in FY2025; up 38 since FY2020.
3	Pietro Carnaghi USA Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$17,226,855	6.3%	Rank history: #24 in FY2022, #21 in FY2023, #24 in FY2024 and #66 in FY2025; unchanged since FY2020.
4	Phillips Corporation 2 awardees Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$16,655,399	6.1%	Rank history: #3 in FY2022, #7 in FY2023, #4 in FY2024 and #4 in FY2025; down 2 since FY2020.
5	Andritz AG 2 awardees, including Andritz Schuler Incorporated and Graebener Press Systems, Inc. Top agencies Treasury (Department of the Treasury)	$14,360,813	5.3%	Rank history: #1 in FY2022, #4 in FY2023, #5 in FY2024 and not on the FY2025 list; up 2 since FY2020.
6	Lapmaster US Holdings Inc. Through Lapmaster International LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$7,044,262	2.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
7	Mori Seiki Co. Ltd. Through DMG Mori Usa, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$7,003,621	2.6%	Rank history: #52 in FY2022 and not on the FY2023–FY2025 lists; down 6 since FY2020.
8	Starragheckert Holding AG Through Starrag USA Inc. Top agencies USAF (Department of the Air Force)	$6,723,957	2.5%	Rank history: #2 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
9	KDY Automation Solutions, Inc. Top agencies Navy (Department of the Navy)	$6,012,552	2.2%	Rank history: #23 in FY2022 and not on the FY2023–FY2025 lists; up 9 since FY2020.
10	Hartwig, Inc. Top agencies Treasury (Department of the Treasury)	$5,764,349	2.1%	Rank history: not on the FY2022–FY2025 lists; up 10 since FY2020.
11	Burlington Engineering Corporation Top agencies Army (Department of the Army)	$4,310,911	1.6%	Rank history: #8 in FY2022, #5 in FY2023, #22 in FY2024 and not on the FY2025 list; down 3 since FY2020.
12	Integrated Government Solutions LLC Top agencies Army (Department of the Army)	$4,239,978	1.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
13	Panda Machine Tools Inc. Top agencies DLA (Defense Logistics Agency)	$3,686,713	1.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
14	Lasco Engineering Services, LLC Top agencies Army (Department of the Army)	$3,452,100	1.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
15	GBI Cincinnati Inc. Top agencies Army (Department of the Army)	$3,199,540	1.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
16	DMG Mori Usa, Inc. Top agencies Army (Department of the Army)	$3,159,174	1.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
17	VRC Metal Systems, LLC Top agencies Navy (Department of the Navy)	$2,743,595	1.0%	Rank history: #15 in FY2022, #8 in FY2023, #79 in FY2024 and #37 in FY2025; new, not ranked in FY2020.
18	Koenig & Bauer AG Through Koenig & Bauer Banknote Solutions SA Top agencies Treasury (Department of the Treasury)	$2,675,129	1.0%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
19	Universal Stainless & Alloy Products Inc. Through Dunkirk Specialty Steel LLC Top agencies Treasury (Department of the Treasury)	$2,637,900	1.0%	Rank history: #18 in FY2022, #44 in FY2023, #38 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
20	Intergraph Corporation Through Hexagon Manufacturing Intelligence, LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$2,598,748	1.0%	Rank history: #44 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
21	Pauley Rodine Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,532,701	0.9%	Rank history: not on the FY2022 list, #91 in FY2023, #3 in FY2024 and not on the FY2025 list; up 79 since FY2020.
22	Entrust Manufacturing Technologies, Inc. Top agencies Army (Department of the Army)	$2,452,961	0.9%	Rank history: #36 in FY2022, #3 in FY2023, #52 in FY2024 and #53 in FY2025; down 12 since FY2020.
23	Byers and Associates, LLC Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$2,323,110	0.9%	Rank history: #12 in FY2022 and not on the FY2023–FY2025 lists; down 17 since FY2020.
24	Bauer, Inc. Top agencies Navy (Department of the Navy)	$2,089,334	0.8%	Rank history: #55 in FY2022, #36 in FY2023 and not on the FY2024–FY2025 lists; down 12 since FY2020.
25	Universal Technical Resource Services Inc. Top agencies Army (Department of the Army)	$2,060,212	0.8%	Rank history: not on the FY2022–FY2025 lists; up 9 since FY2020.
26	Theodor Wille Intertrade GMBH Through Atlantic Diving Supply, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$2,018,941	0.7%	Rank history: not on the FY2022 list, #99 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2020.
27	Testek LLC Top agencies Navy (Department of the Navy)	$2,016,116	0.7%	Rank history: #11 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
28	Honeycomb Company of America Inc. Top agencies DLA (Defense Logistics Agency)	$1,989,760	0.7%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
29	Epilog Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$1,856,912	0.7%	Rank history: #57 in FY2022, #41 in FY2023, #65 in FY2024 and not on the FY2025 list; down 13 since FY2020.
30	JD Hamlett Inc. Top agencies DLA (Defense Logistics Agency)	$1,833,150	0.7%	Rank history: not on the FY2022–FY2025 lists; up 157 since FY2020.
31	Tornquist Machinery Company Top agencies DLA (Defense Logistics Agency)	$1,762,088	0.6%	Rank history: not on the FY2022–FY2025 lists; up 95 since FY2020.
32	Acsys Lasertechnik US Inc. Top agencies Treasury (Department of the Treasury)	$1,725,923	0.6%	Rank history: #64 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
33	Machine Tools Usa, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,671,695	0.6%	Rank history: #5 in FY2022, not on the FY2023 list, #9 in FY2024 and #15 in FY2025; down 22 since FY2020.
34	Euro Machinery Specialists, Inc. Top agencies DLA (Defense Logistics Agency)	$1,671,525	0.6%	Rank history: not on the FY2022 list, #51 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
35	Zistos Corporation Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$1,659,125	0.6%	Rank history: #63 in FY2022, #65 in FY2023, #34 in FY2024 and #35 in FY2025; up 37 since FY2020.
36	Here Be Dragons, LLC Top agencies DOJ (Department of Justice)	$1,640,240	0.6%	Rank history: #30 in FY2022, #22 in FY2023, #30 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
37	Takachiho Sangyo Co.,Ltd. Top agencies DLA (Defense Logistics Agency)	$1,618,349	0.6%	Rank history: not on the FY2022–FY2023 lists, #53 in FY2024 and not on the FY2025 list; up 1 since FY2020.
38	CR Onsrud Inc. Top agencies DLA (Defense Logistics Agency)	$1,570,106	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
39	West Coast CNC Inc. Top agencies Navy (Department of the Navy)	$1,535,316	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
40	GFS Supply & Services Company, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$1,512,709	0.6%	Rank history: not on the FY2022–FY2024 lists and #87 in FY2025; up 9 since FY2020.
41	Jalbert and Associates, Inc. Top agencies DLA (Defense Logistics Agency)	$1,436,427	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
42	Gasbarre Products Inc. Top agencies DLA (Defense Logistics Agency)	$1,399,000	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
43	Pacific IC Source Top agencies Navy (Department of the Navy)	$1,362,888	0.5%	Rank history: #25 in FY2022, not on the FY2023–FY2024 lists and #25 in FY2025; up 143 since FY2020.
44	Reinen Machine Sales, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$1,329,608	0.5%	Rank history: #53 in FY2022, not on the FY2023 list, #37 in FY2024 and #72 in FY2025; down 12 since FY2020.
45	Rexel Usa, Inc. Top agencies Army (Department of the Army)	$1,328,870	0.5%	Rank history: #38 in FY2022, #67 in FY2023 and not on the FY2024–FY2025 lists; down 17 since FY2020.
46	Industrial Vacuum Equipment Corporation (Ivec) Top agencies DLA (Defense Logistics Agency)	$1,300,000	0.5%	Rank history: not on the FY2022–FY2025 lists; down 27 since FY2020.
47	Matsys Incorporated Top agencies Army (Department of the Army)	$1,298,663	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
48	Jhawar Industries, LLC Top agencies DLA (Defense Logistics Agency)	$1,282,946	0.5%	Rank history: #41 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
49	Machine Tool Marketing Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$1,200,745	0.4%	Rank history: #17 in FY2022, #11 in FY2023, #16 in FY2024 and #6 in FY2025; up 44 since FY2020.
50	Tuckahoe Trading Inc. Top agencies Treasury (Department of the Treasury)	$1,181,031	0.4%	Rank history: #34 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
51	Anca PTY Ltd Through Anca, Inc. Top agencies DLA (Defense Logistics Agency)	$1,098,045	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
52	3D Hybrid Top agencies Army (Department of the Army)	$1,097,850	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
53	4D Systems LLC Top agencies DLA (Defense Logistics Agency)	$1,089,406	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
54	Abrasive-Tool Company LLC Top agencies Army (Department of the Army)	$938,921	0.3%	Rank history: #59 in FY2022, #56 in FY2023, #51 in FY2024 and #78 in FY2025; down 10 since FY2020.
55	Thielenhaus Microfinish Corp Top agencies Treasury (Department of the Treasury)	$903,865	0.3%	Rank history: not on the FY2022–FY2023 lists, #89 in FY2024 and not on the FY2025 list; up 284 since FY2020.
56	Grimco Pneumatic Corp Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$869,438	0.3%	Rank history: not on the FY2022–FY2025 lists; up 25 since FY2020.
57	Bourn & Koch, Inc. Top agencies DLA (Defense Logistics Agency)	$818,844	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
58	Alta Enterprises, Inc. Top agencies Army (Department of the Army) Commerce (Department of Commerce)	$784,396	0.3%	Rank history: #50 in FY2022, #37 in FY2023 and not on the FY2024–FY2025 lists; up 54 since FY2020.
59	FBT Inc. Top agencies Treasury (Department of the Treasury)	$736,336	0.3%	Rank history: #31 in FY2022, #46 in FY2023, #57 in FY2024 and #71 in FY2025; down 24 since FY2020.
60	Equipment Resource Center, Inc. Top agencies Commerce (Department of Commerce) USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$714,541	0.3%	Rank history: #65 in FY2022 and not on the FY2023–FY2025 lists; up 42 since FY2020.
61	Cavanaugh Government Group, LLC Top agencies DLA (Defense Logistics Agency)	$700,924	0.3%	Rank history: #48 in FY2022, #45 in FY2023, #76 in FY2024 and #86 in FY2025; down 9 since FY2020.
62	Newturn Solutions, Inc. Top agencies Navy (Department of the Navy)	$692,439	0.3%	Rank history: not on the FY2022 list, #13 in FY2023 and not on the FY2024–FY2025 lists; up 83 since FY2020.
63	H & C Tool Supply Corp. Top agencies Army (Department of the Army)	$682,432	0.3%	Rank history: #58 in FY2022, #47 in FY2023, #60 in FY2024 and #55 in FY2025; down 15 since FY2020.
64	3T Federal Solutions LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$654,762	0.2%	Rank history: not on the FY2022–FY2025 lists; up 255 since FY2020.
65	Republic Machinery Co Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$652,600	0.2%	Rank history: not on the FY2022–FY2023 lists, #40 in FY2024 and not on the FY2025 list; up 78 since FY2020.
66	Buhler US Holding Inc. Through Buhler Inc. Top agencies Treasury (Department of the Treasury)	$642,500	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
67	Blanchard Industrial Supplies, Inc. Top agencies Army (Department of the Army)	$631,443	0.2%	Rank history: #73 in FY2022, #66 in FY2023, #63 in FY2024 and #47 in FY2025; down 20 since FY2020.
68	G.o. Carlson, Inc. Top agencies Army (Department of the Army)	$600,000	0.2%	Rank history: #83 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
69	Machines & Methods Inc. Top agencies Navy (Department of the Navy)	$596,195	0.2%	Rank history: not on the FY2022–FY2025 lists; up 42 since FY2020.
70	United Grinding North America Inc. Top agencies Treasury (Department of the Treasury)	$589,625	0.2%	Rank history: not on the FY2022–FY2025 lists; down 9 since FY2020.
71	B & H International LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DOJ (Department of Justice)	$573,009	0.2%	Rank history: #100 in FY2022 and not on the FY2023–FY2025 lists; up 30 since FY2020.
72	Aantilia LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$553,596	0.2%	Rank history: not on the FY2022 list, #48 in FY2023, #75 in FY2024 and not on the FY2025 list; up 111 since FY2020.
73	Maehr Machinery Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$552,766	0.2%	Rank history: #85 in FY2022, #43 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
74	Illinois Tool Works Inc. Top agencies Navy (Department of the Navy)	$532,420	0.2%	Rank history: #66 in FY2022, #69 in FY2023 and not on the FY2024–FY2025 lists; down 53 since FY2020.
75	Harbor Machine Tool Co Inc. Top agencies Navy (Department of the Navy)	$524,575	0.2%	Rank history: not on the FY2022–FY2025 lists; up 274 since FY2020.
76	Mactech Incorporated Top agencies Navy (Department of the Navy)	$517,453	0.2%	Rank history: not on the FY2022–FY2023 lists, #56 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
77	Crotts and Saunders, LLC Top agencies Navy (Department of the Navy)	$504,276	0.2%	Rank history: #51 in FY2022 and not on the FY2023–FY2025 lists; up 26 since FY2020.
78	Maryland Industrial Trucks, Incorporated Top agencies Army (Department of the Army)	$473,040	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
79	Monaco Property Investments Corp Top agencies Navy (Department of the Navy) Treasury (Department of the Treasury)	$472,109	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
80	Phi Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$454,786	0.2%	Rank history: #61 in FY2022, #70 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
81	Mazak Corporation Top agencies Army (Department of the Army)	$450,000	0.2%	Rank history: #16 in FY2022 and not on the FY2023–FY2025 lists; down 36 since FY2020.
82	Climax Portable Machine Tools, Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$449,873	0.2%	Rank history: #29 in FY2022, not on the FY2023–FY2024 lists and #61 in FY2025; down 29 since FY2020.
83	MDF Technologies Inc. Top agencies DLA (Defense Logistics Agency)	$438,406	0.2%	Rank history: #72 in FY2022, #68 in FY2023, not on the FY2024 list and #94 in FY2025; down 17 since FY2020.
84	QMP Enterprises, Inc. Top agencies Army (Department of the Army)	$434,692	0.2%	Rank history: #76 in FY2022, #40 in FY2023, #69 in FY2024 and #77 in FY2025; down 54 since FY2020.
85	Interlog Corporation Top agencies DLA (Defense Logistics Agency)	$433,167	0.2%	Rank history: #75 in FY2022, #75 in FY2023 and not on the FY2024–FY2025 lists; up 153 since FY2020.
86	Pama, Inc. Top agencies Navy (Department of the Navy)	$431,405	0.2%	Rank history: #69 in FY2022, #30 in FY2023 and not on the FY2024–FY2025 lists; up 93 since FY2020.
87	Georg Fischer AG Through United Machining North America LLC Top agencies Army (Department of the Army) Treasury (Department of the Treasury)	$423,875	0.2%	Rank history: not on the FY2022–FY2025 lists; up 404 since FY2020.
88	Industrial Tooling & Supply LLC Top agencies Army (Department of the Army)	$420,744	0.2%	Rank history: not on the FY2022 list, #77 in FY2023, #97 in FY2024 and not on the FY2025 list; down 9 since FY2020.
89	Herc Rentals Inc. Top agencies GSA (General Services Administration) VA (Department of Veterans Affairs)	$415,641	0.2%	Rank history: not on the FY2022–FY2025 lists; up 156 since FY2020.
90	Berkshire Hathaway Inc. 2 awardees, including Fatigue Technology, Inc. and Orkal Industries LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$413,648	0.2%	Rank history: not on the FY2022–FY2025 lists; down 1 since FY2020.
91	Machinery Solutions Inc. Top agencies Navy (Department of the Navy)	$399,080	0.1%	Rank history: not on the FY2022–FY2025 lists; up 22 since FY2020.
92	Reactiv Laser Systems, LLC Top agencies Treasury (Department of the Treasury)	$392,855	0.1%	Rank history: not on the FY2022–FY2025 lists; up 286 since FY2020.
93	Johnson Gage Company The Top agencies Navy (Department of the Navy)	$392,067	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
94	Yamazen Inc. Top agencies DLA (Defense Logistics Agency)	$385,800	0.1%	Rank history: not on the FY2022 list, #78 in FY2023 and not on the FY2024–FY2025 lists; down 51 since FY2020.
95	Heico Aerospace Corporat Through Radiant Power Corp Top agencies DLA (Defense Logistics Agency)	$385,800	0.1%	Rank history: #70 in FY2022 and not on the FY2023–FY2025 lists; down 22 since FY2020.
96	A & M Industrial Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) Treasury (Department of the Treasury)	$382,332	0.1%	Rank history: not on the FY2022–FY2025 lists; up 80 since FY2020.
97	Baldwin Services Group Limited, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$377,620	0.1%	Rank history: not on the FY2022 list, #29 in FY2023, #73 in FY2024 and #45 in FY2025; up 112 since FY2020.
98	Giga, Inc. Top agencies Army (Department of the Army)	$345,106	0.1%	Rank history: #88 in FY2022, #63 in FY2023, #59 in FY2024 and #76 in FY2025; up 29 since FY2020.
99	SNK America Inc. Top agencies DLA (Defense Logistics Agency)	$341,709	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	EHB Supply Top agencies Navy (Department of the Navy)	$339,321	0.1%	Rank history: not on the FY2022–FY2023 lists, #81 in FY2024 and not on the FY2025 list; up 133 since FY2020.

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100 of 694 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 33351

Code	Net obligations	Largest contractor
333517 Machine Tool Manufacturing	$212,493,377	Machine Tool Research, Inc.
333515 Cutting Tool and Machine Tool Accessory Manufacturing	$25,665,306	VRC Metal Systems, LLC
333519 Rolling Mill and Other Metalworking Machinery Manufacturing	$17,155,453	Andritz AG
333514 Special Die and Tool, Die Set, Jig, and Fixture Manufacturing	$5,446,960	Universal Stainless & Alloy Products Inc.

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 $271 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 NAICS 33351 contractors in FY2021?

1. Machine Tool Research, Inc. ($28M), 2. Hartech Group LLC ($20.3M), 3. Pietro Carnaghi USA Inc. ($17.2M), 4. Phillips Corporation ($16.7M), 5. Andritz AG ($14.4M), 6. Lapmaster US Holdings Inc. ($7.04M), 7. Mori Seiki Co. Ltd. ($7M), 8. Starragheckert Holding AG ($6.72M), 9. KDY Automation Solutions, Inc. ($6.01M), 10. Hartwig, Inc. ($5.76M).

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