NAICS Code 33451: Navigational, Measuring, Electromedical, and Control Instruments Manufacturing
NAICS industry
Definition
This industry comprises establishments primarily engaged in manufacturing navigational, measuring, electromedical, and control instruments. Examples of products made by these establishments are aeronautical instruments, appliance regulators and controls (except switches), laboratory analytical instruments, navigation and guidance systems, and physical properties testing equipment.
Code facts
- Part of
-
-
31-33
-
334
- 3345
-
334
-
31-33
- Codes under it
- 9
- Contract awards
- 31,094 In the last 12 months
- Contract obligations
- $24,862,005,942 In FY2025
NAICS codes and definitions come from the U.S. Census Bureau, size standards from the SBA and contract spending from SAM.gov/FPDS.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $91,866,438 |
| FY2026 | $23,347,117,436 |
| FY2025 | $24,862,005,942 |
| FY2024 | $24,144,778,217 |
| FY2023 | $23,650,911,410 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Raytheon Company | $3,278,035,165 | |
| 2 | Raytheon Company | $2,923,968,848 | |
| 3 | Lockheed Martin Corporation | $1,134,394,814 | |
| 4 | Northrop Grumman Systems Corporation | $861,675,798 | |
| 5 | Lockheed Martin Corporation | $676,169,810 | |
| 6 | Northrop Grumman Systems Corporation | $661,899,599 | |
| 7 | Indra Air Traffic, Inc. | $387,474,156 | |
| 8 | Lockheed Martin Corporation | $368,753,602 | |
| 9 | Elbitamerica, Inc. | $352,994,679 | |
| 10 | General Dynamics Mission Systems, Inc. | $340,683,022 |
See the full FY2025 ranking of NAICS 33451 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of the Navy | $9,497,195,949 | |
| 2 | Department of the Army | $5,519,952,188 | |
| 3 | Air Force | $2,389,559,330 | |
| 4 | Department of Homeland Security | $1,427,261,582 | |
| 5 | Department of Veterans Affairs | $1,396,460,177 | |
| 6 | Department of Transportation | $1,020,069,554 | |
| 7 | Defense Logistics Agency | $419,978,601 | |
| 8 | Missile Defense Agency | $334,566,250 | |
| 9 | US Special Operations Command | $293,067,297 | |
| 10 | Department of Health and Human Services | $211,513,280 |
Top PSC codes by obligations
| Rank | PSC code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | 5840 Radar Equipment, Except Airborne | $4,253,385,015 | |
| 2 | 1260 Fire Control Designating and Indicating Equipment | $2,904,323,068 | |
| 3 | 5865 Electronic Countermeasures, Counter-Countermeasures and Quick Reaction Capability Equipment | $2,101,316,522 | |
| 4 | J014 Maintenance, Repair and Rebuilding of Equipment: Guided Missiles | $791,887,597 | |
| 5 | 1230 Fire Control Systems, Complete | $732,597,651 | |
| 6 | R425 Engineering and Technical Services | $721,505,714 | |
| 7 | 6350 Miscellaneous Alarm, Signal, and Security Detection Systems | $640,894,213 | |
| 8 | 5845 Underwater Sound Equipment | $602,074,670 | |
| 9 | 6525 X-Ray Equipment and Supplies: Medical, Dental, Veterinary | $577,833,275 | |
| 10 | 6640 Laboratory Equipment and Supplies | $549,791,969 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Massachusetts | $7,499,450,016 | |
| 2 | California | $1,888,127,941 | |
| 3 | Virginia | $1,579,681,276 | |
| 4 | Maryland | $1,471,041,083 | |
| 5 | New York | $1,247,544,967 | |
| 6 | New Jersey | $1,226,874,028 | |
| 7 | Texas | $1,213,213,733 | |
| 8 | Florida | $1,079,469,036 | |
| 9 | Illinois | $781,995,008 | |
| 10 | Pennsylvania | $537,264,225 | |
| 11 | Colorado | $411,815,553 | |
| 12 | Kansas | $403,319,924 | |
| 13 | Indiana | $382,255,012 | |
| 14 | Georgia | $242,251,835 | |
| 15 | New Hampshire | $227,992,561 | |
| 16 | Washington | $189,195,715 | |
| 17 | Iowa | $165,960,241 | |
| 18 | Nevada | $164,758,167 | |
| 19 | Wisconsin | $161,917,316 | |
| 20 | Ohio | $136,773,955 | |
| 21 | Arizona | $133,937,185 | |
| 22 | Missouri | $79,535,082 | |
| 23 | Connecticut | $76,680,089 | |
| 24 | Alabama | $71,621,990 | |
| 25 | District of Columbia | $70,356,413 | |
| 26 | North Carolina | $65,865,576 | |
| 27 | Rhode Island | $55,910,935 | |
| 28 | Utah | $55,848,949 | |
| 29 | Mississippi | $55,034,388 | |
| 30 | Tennessee | $49,226,638 | |
| 31 | Michigan | $48,807,976 | |
| 32 | Oklahoma | $48,145,711 | |
| 33 | Alaska | $44,025,827 | |
| 34 | Minnesota | $44,000,732 | |
| 35 | New Mexico | $32,823,796 | |
| 36 | Oregon | $27,444,848 | |
| 37 | Kentucky | $24,208,508 | |
| 38 | Arkansas | $21,825,613 | |
| 39 | Delaware | $17,717,509 | |
| 40 | Louisiana | $11,400,136 | |
| 41 | South Carolina | $11,352,951 | |
| 42 | Vermont | $7,037,442 | |
| 43 | Montana | $6,573,351 | |
| 44 | West Virginia | $5,194,488 | |
| 45 | North Dakota | $4,726,099 | |
| 46 | Hawaii | $4,419,967 | |
| 47 | Nebraska | $3,833,389 | |
| 48 | South Dakota | $2,483,232 | |
| 49 | Maine | $2,225,671 | |
| 50 | Idaho | $2,196,183 | |
| 51 | Guam | $1,807,780 | |
| 52 | Wyoming | $1,407,318 | |
| 53 | Puerto Rico | $916,558 |
Show all 53
Shares are of everything obligated under NAICS 33451 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 40 more
Latest 50 of 233,528 listed here. See the rest on GovTribe.
Codes under 33451
Quick answers
What is NAICS 33451?
NAICS 33451 is Navigational, Measuring, Electromedical, and Control Instruments Manufacturing, a NAICS industry in NAICS 31-33, Manufacturing.
What codes are under NAICS 33451?
NAICS 33451 has 9 codes under it with their own GovTribe pages, including 334510 Electromedical and Electrotherapeutic Apparatus Manufacturing; 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing; and 334512 Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use.
How much do federal agencies spend under NAICS 33451?
Federal contracts under NAICS 33451 obligated $24,862,005,942 in fiscal year 2025 and $96,096,679,443 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 33451?
The contractors with the most obligated under NAICS 33451 in fiscal years 2026 and 2027 are Raytheon Company ($3,278,035,165), Lockheed Martin Corporation ($1,134,394,814) and Northrop Grumman Systems Corporation ($861,675,798).
Which agencies buy the most under NAICS 33451?
The agencies that obligated the most under NAICS 33451 in fiscal years 2026 and 2027 are Department of the Navy ($9,497,195,949), Department of the Army ($5,519,952,188) and Air Force ($2,389,559,330).
Which PSC codes are used with NAICS 33451?
The PSC codes with the most obligated under NAICS 33451 in fiscal years 2026 and 2027 are 5840 Radar Equipment, Except Airborne; 1260 Fire Control Designating and Indicating Equipment; and 5865 Electronic Countermeasures, Counter-Countermeasures and Quick Reaction Capability Equipment.
Where is the work under NAICS 33451 performed?
By place of performance, the states with the most contract obligations under NAICS 33451 over the last 12 months are Massachusetts ($7,499,450,016), California ($1,888,127,941) and Virginia ($1,579,681,276).
What is the latest contract opportunity under NAICS 33451?
The latest contract opportunity under NAICS 33451 is CSI Digital Correlation Systems, special notice from Shared Services Center, posted November 10, 2026.
On GovTribe
See everything under NAICS 33451
- Federal contract opportunities, awards and IDVs under this code
- Funding analysis by contractor, agency and set-aside
- Contacts who buy under this code
- Ask GovTribe AI about this code