Top 100 Contractors in PSC 66: Instruments and Laboratory Equipment, Jul 2025–Jun 2026

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 24% of PSC 66 contract dollars from July 2025 through June 2026

Contract obligations
$3,865,743,632 Net of deobligations, by contracts coded PSC 66 or a code under it
Contractors
3,423 Parent companies with an obligation
Largest contractor
Leidos Holdings, Inc. $135 million, 3.4% of obligations
Data as of

Contract actions from FPDS (SAM.gov). How the rankings work · Download

Full ranking

Rank Contractor Net obligations Share Trend
1
Leidos Holdings, Inc. 5 awardees, including Leidos, Inc.
Top agencies
$134,871,051
2
Government Scientific Source Inc.
Top agencies
$117,537,190
3
Honeywell International Inc. 12 awardees, including Honeywell Aerospace International Inc.
Top agencies
$109,514,251
4
Lockheed Martin Corporation 13 awardees, including Sikorsky Aircraft Corporation and Lockheed Martin Sippican, Inc.
Top agencies
$106,418,614
5
Astronics Test Systems Inc.
Top agencies
$103,350,281
6
L3Harris Technologies, Inc. 17 awardees, including L3Harris Interstate Electronics Corporation, Acron Aviation, Inc. and L3 Technologies, Inc.
Top agencies
$86,443,480
7
Technical Communities, Inc.
Top agencies
$80,419,250
8
BAE Systems 10 awardees, including BAE Systems Information and Electronic Systems Integration Inc., BAE Systems Controls Inc. and BAE Systems Space & Mission Systems Inc.
Top agencies
$77,266,635
9
D-2 Incorporated
Top agencies
$76,158,134
10
Abbott Laboratories Inc. 5 awardees, including Abbott Rapid DX North America LLC and Alere San Diego, Inc.
Top agencies
$73,440,713
11
RTX Corporation 42 awardees, including Rockwell Collins, Inc., Raytheon Company and Simmonds Precision Products Inc.
Top agencies
$73,121,574
12
Stryker Corporation 2 awardees, including Howmedica Osteonics Corp and Stryker Sales, LLC
Top agencies
$69,147,385
13
Arthrex Inc.
Top agencies
$66,125,664
14
Northrop Grumman Corporation 17 awardees, including Northrop Grumman Systems Corporation
Top agencies
$61,996,209
15
Smiths Detection Inc. 2 awardees
Top agencies
$61,864,305
16
Rapiscan Systems Inc
Top agencies
$57,658,385
17
PPD Development LP 12 awardees, including Life Technologies Corporation, Thermo Electron North America LLC and FEI Company
Top agencies
$57,586,494
18
Kilgore Flares Company LLC 2 awardees, including Chemring Sensors and Electronic Systems, Inc.
Top agencies
$56,662,567
19
Roche Holdings Inc. Through Roche Diagnostics Corporation
Top agencies
$54,787,884
20
Johnson & Johnson Through Johnson & Johnson Health Care Systems Inc.
Top agencies
$49,712,015
21
Beckman Coulter, Inc.
Top agencies
$46,637,068
22
Atlantic Diving Supply, Inc. 2 awardees, including 4 Star Technologies, Inc.
Top agencies
$46,072,386
23
Fisher Scientific Company L.L.C.
Top agencies
$45,584,140
24
The Boeing Company 10 awardees, including Boeing Distribution, Inc., Jeppesen Foreflight, Inc. and Boeing Distribution Services, Inc.
Top agencies
$45,090,531
25
Danaher Corporation 13 awardees, including Cepheid, Leica Microsystems Inc. and AB Sciex LLC
Top agencies
$43,042,458
26
Beacon Point Associates LLC
Top agencies
$42,689,585
27
Total Technology, Inc.
Top agencies
$31,972,106
28
Astrophysics Inc.
Top agencies
$31,760,098
29
Scitech Services Inc.
Top agencies
$30,477,539
30
Dove Medical Supply LLC
Top agencies
$30,143,875
31
Red One Medical Devices LLC
Top agencies
$27,206,636
32
Agilent Technologies, Inc. 4 awardees
Top agencies
$26,519,573
33
Siemens Corporation 3 awardees, including Siemens Healthcare Diagnostics Inc. and Siemens Medical Solutions Usa, Inc.
Top agencies
$25,011,980
34
STS International, Incorporated
Top agencies
$23,442,450
35
Planewave Instruments Inc.
Top agencies
$22,150,000
36
Teledyne Flir Defense, LLC
Top agencies
$21,703,370
37
Fortive Corporation 2 awardees, including Fluke Electronics Corp and Thomson Linear LLC
Top agencies
$18,813,558
38
Sysmex America Inc.
Top agencies
$18,219,287
39
Biomerieux Inc.
Top agencies
$18,044,846
40
Illumina, Inc.
Top agencies
$18,029,482
41
Vaisala Inc.
Top agencies
$17,704,793
42
Keysight Technologies, Inc. 3 awardees
Top agencies
$17,573,088
43
Boston Scientific Corp 2 awardees, including Boston Scientific Neuromodulation Corp
Top agencies
$17,485,083
44
THALES 2 awardees, including Thales Defense & Security Inc. and Thales Belgium
Top agencies
$17,008,311
45
Veterans Healthcare Supply Solutions, Inc.
Top agencies
$16,838,498
46
Genesis Vision, Inc.
Top agencies
$16,612,492
47
Southwest Research Institute
Top agencies
$15,967,184
48
Trillamed LLC
Top agencies
$15,698,992
49
Henry Schein, Inc.
Top agencies
$14,840,594
50
Honeybee Robotics LLC
Top agencies
$14,706,165
51
Franklin Young International, Incorporated
Top agencies
$14,392,713
52
Zimmer Biomet Holdings Inc. Through Zimmer US Inc.
Top agencies
$14,201,640
53
Rolls-Royce Solutions America Inc. 3 awardees, including Rolls-Royce Corporation and Rolls-Royce Canada Limited
Top agencies
$14,064,111
54
Kls-Martin Limited Partnership
Top agencies
$13,699,964
55
Seiler Instrument and Manufacturing Company, Incorporated
Top agencies
$12,982,755
56
Era Health LLC
Top agencies
$12,826,862
57
AAR Government Services Inc. 2 awardees, including AAR Supply Chain, Inc.
Top agencies
$12,476,763
58
Integrated Procurement Technologies
Top agencies
$12,467,033
59
VWR International LLC 2 awardees, including Labrepco LLC
Top agencies
$12,388,522
60
Noble Supply & Logistics, LLC 2 awardees, including Tactical & Survival Specialties, LLC
Top agencies
$12,295,298
61
Alliant Enterprises, LLC
Top agencies
$11,942,069
62
Lovell Government Services Inc.
Top agencies
$11,603,074
63
Intercomp Co
Top agencies
$11,464,227
64
Affirmative Solutions LLC
Top agencies
$10,968,409
65
Rev-Cap Company, Inc.
Top agencies
$10,917,845
66
General Electric Company 8 awardees, including GE Aviation Systems LLC, Reuter-Stokes, LLC and Unison Industries LLC
Top agencies
$10,647,865
67
Luxfer Magtech Inc.
Top agencies
$10,120,934
68
Standard Calibrations Inc.
Top agencies
$9,598,241
69
Safeware Inc. 2 awardees
Top agencies
$9,015,662
70
Transaero, Inc.
Top agencies
$8,999,188
71
Pendar Technologies LLC
Top agencies
$8,883,557
72
Dental Health Products Incorporated
Top agencies
$8,730,545
73
SAFRAN 3 awardees, including Safran Defense & Space, Inc., Safran Trusted 4D Inc. and Avox Systems Inc.
Top agencies
$8,664,113
74
Leica Geosystems Inc. 2 awardees, including Hexagon Manufacturing Intelligence, LLC
Top agencies
$8,638,276
75
Canadian Commercial Corporation
Top agencies
$8,405,503
76
Ametek Inc. 14 awardees, including Spectro Scientific, Inc., Taylor Hobson Inc. and Vision Research, Inc.
Top agencies
$8,391,713
77
MJL Enterprises, LLC
Top agencies
$8,093,649
78
San Antonio Lighthouse for the Blind
Top agencies
$8,036,980
79
Bruker Corporation 4 awardees, including Bruker Scientific LLC, Bruker Detection Corp and Bruker Biospin Corp
Top agencies
$8,032,116
80
Condor Pacific Industries, Inc.
Top agencies
$7,607,640
81
H C Merchandisers, Inc.
Top agencies
$7,395,136
82
Buffalo Supply Inc.
Top agencies
$7,365,676
83
Academy Medical Inc.
Top agencies
$7,207,863
84
Kampi Components Co Inc.
Top agencies
$7,192,792
85
Medtronic Public Limited Company 4 awardees, including Medtronic USA Inc., Medtronic Inc. and Medtronic Gesellschaft MIT Beschränkter Haftung
Top agencies
$7,103,480
86
Fairwinds Technologies LLC
Top agencies
$7,014,822
87
S & K Aerospace, LLC
Top agencies
$6,972,185
88
Valkyrie Enterprises, LLC 2 awardees
Top agencies
$6,695,610
89
Tecan U.S. Group Inc. Through Tecan U.s., Inc.
Top agencies
$6,656,801
90
Werfen USA LLC
Top agencies
$6,618,329
91
Rosemount Aerospace Inc.
Top agencies
$6,433,149
92
OTT Hydromet Corp
Top agencies
$6,412,528
93
Leach International Corp 6 awardees, including King Nutronics Corporation, Mason Electric Co. and Transdigm Inc.
Top agencies
$6,376,520
94
Benco Dental Supply Co.
Top agencies
$6,203,229
95
Thomas Scientific, LLC
Top agencies
$6,072,578
96
MMC Metrology Lab, Inc.
Top agencies
$6,023,422
97
S I T Corporation
Top agencies
$5,984,141
98
Carp Industries Corp
Top agencies
$5,969,808
99
Safety Technology Holdings Inc. Through Humanetics Innovative Solutions, Inc.
Top agencies
$5,959,443
100
Rohde & Schwarz Usa, Inc.
Top agencies
$5,911,972
Show 75 more

100 of 3,423 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC 66

Code Net obligations Largest contractor
6640 Laboratory Equipment and Supplies $1,367,609,939 Government Scientific Source Inc.
6625 Electrical and Electronic Properties Measuring and Testing Instruments $595,030,899 Astronics Test Systems Inc.
6665 Hazard-Detecting Instruments and Apparatus $433,712,936 Leidos Holdings, Inc.
6605 Navigational Instruments $297,582,376 Honeywell International Inc.
6630 Chemical Analysis Instruments $237,639,278 D-2 Incorporated
6610 Flight Instruments $158,452,033 RTX Corporation
6650 Optical Instruments, Test Equipment, Components and Accessories $150,503,468 Planewave Instruments Inc.
6685 Pressure, Temperature, and Humidity Measuring and Controlling Instruments $145,837,653 Rolls-Royce Solutions America Inc.
6680 Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments $100,678,726 Standard Calibrations Inc.
6695 Combination and Miscellaneous Instruments $90,463,245 Safety Technology Holdings Inc.
6635 Physical Properties Testing and Inspection $57,566,262 NDT Solutions, LLC
6660 Meteorological Instruments and Apparatus $55,273,992 Vaisala Inc.
6615 Automatic Pilot Mechanisms and Airborne Gyro Components $47,630,467 RTX Corporation
6620 Engine Instruments $36,423,745 AAR Government Services Inc.
6632 Analysis Instruments, Medical Laboratory Use $26,640,410 Beckman Coulter, Inc.
6670 Scales and Balances $15,866,646 Intercomp Co
6655 Geophysical Instruments $15,437,239 4 D Technology Corporation
6675 Drafting, Surveying, and Mapping Instruments $14,978,870 Leica Geosystems Inc.
6645 Time Measuring Instruments $9,722,199 Marathon Watch Company Ltd
6636 Environmental Chambers and Related Equipment $8,693,249 Jiracor LLC

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 $4.02 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.
  • 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 Jul 2024–Jun 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

Who were the top 10 PSC 66 contractors in Jul 2025–Jun 2026?

1. Leidos Holdings, Inc. ($135M), 2. Government Scientific Source Inc. ($118M), 3. Honeywell International Inc. ($110M), 4. Lockheed Martin Corporation ($106M), 5. Astronics Test Systems Inc. ($103M), 6. L3Harris Technologies, Inc. ($86.4M), 7. Technical Communities, Inc. ($80.4M), 8. BAE Systems ($77.3M), 9. D-2 Incorporated ($76.2M), 10. Abbott Laboratories Inc. ($73.4M).

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