PSC H999: Other QC/Test/Inspect – Miscellaneous
H999 is the product and service code (PSC) federal agencies use for other qc/test/inspect – miscellaneous, in the other quality, test, inspect svcs group. Here are the contracts open under it now, the NAICS codes it pairs with, and who buys and wins this work.
- Open contracts now
- 3
- Spending, FY2026
- $92.1 million
- Share to small businesses
- 31%
Open contracts with PSC H999, due soonest
- Hickman Borings Drilling and Testing
Due in 2 daysOct 12, 2026
- Fuel Tank Inspections & Maint/Diesel Fuel Testing and Polishing Service
Due in 2 daysOct 12, 2026
- Acoustic Testing for the IM-272A/WDQ Air Particle Detector and isolation valves
✦ The Navy's Naval Surface Warfare Center Carderock Division wants a test lab to quiet two IM-272A/WDQ air particle detectors (radiation monitors used on ships) with acoustic…
Due in 21 daysOct 31, 2026
Where H999 sits in the PSC Manual
- Category: Service
- Group H: Quality Control, Test, Inspection
- Group H9: Other Quality, Test, Inspect SVCS
- Code H999: Other QC/Test/Inspect – Miscellaneous
NAICS codes used with PSC H999
The NAICS code on a contract sets the size standard for who counts as small. These are the codes agencies pair with H999 most often:
| NAICS | Industry | Spent, last 3 years |
|---|---|---|
| 541330 | Engineering Services | $174.9 million |
| 541380 | Testing Laboratories and Services | $23.5 million |
| 488390 | Other Support Activities for Water Transportation | $23.3 million |
| 237120 | Oil and Gas Pipeline and Related Structures Construction | $8.1 million |
| 541310 | Architectural Services | $5 million |
| 532411 | Commercial Air, Rail, and Water Transportation Equipment Rental and Leasing | $5 million |
| 541620 | Environmental Consulting Services | On 1 open |
Who buys under PSC H999
Agencies with the most contract dollars under H999 over the last three fiscal years, per USAspending.gov:
| Agency | Obligated |
|---|---|
| Defense Threat Reduction Agency | $166.6 million |
| Department of the Army | $34.6 million |
| Agricultural Marketing Service | $23.3 million |
| Department of Veterans Affairs | $15.9 million |
| Department of the Air Force | $7.7 million |
| National Aeronautics and Space Administration | $4.6 million |
| Department of the Navy | $4.5 million |
| Centers for Disease Control and Prevention | $3.3 million |
On open notices right now, the most H999 work comes from Dept of Defense and Department of Veterans Affairs.
Federal spending under PSC H999 by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $77.3 million |
| FY2025 | $90.4 million |
| FY2026 | $92.1 million |
| FY2027 (so far) | $511,063 |
Who wins PSC H999 contracts
| Company | Obligated, last 3 years |
|---|---|
| Parsons Government Services Inc. | $79.5 million |
| Applied Research Associates, Inc. | $77.8 million |
| Navcor Logistics LLC | $23 million |
| Valiant Global Defense Services Inc. | $8 million |
| Korea Housing Management Co.,LTD | $7.4 million |
| Next Generation Logistics, LLC | $5.1 million |
| Simpson Gumpertz & Heger Inc. | $5 million |
| Johnson Controls Government Systems, LLC | $5 million |
| Obsidian Solutions Group LLC | $4.2 million |
| Nicholson Construction Company | $3.8 million |
Related PSC codes
- H910 Other QC/Test/Inspect – Weapons
- H911 Other QC/Test/Inspect – Nuclear Ordnance
- H912 Other QC/Test/Inspect – Fire Control Equipment
- H913 Other QC/Test/Inspect – Ammunition and Explosives
- H914 Other QC/Test/Inspect – Guided Missiles
- H915 Other QC/Test/Inspect – Aircraft and Airframe Structural Components
- H916 Other QC/Test/Inspect – Aircraft Components and Accessories
- H917 Other QC/Test/Inspect – Aircraft Launching, Landing, and Ground Handling Equipment
- H918 Other QC/Test/Inspect – Space Vehicles
- H919 Other QC/Test/Inspect – Ships, Small Craft, Pontoons, and Floating Docks
Frequently asked questions
What is PSC H999?
H999 is the service code in the federal Product and Service Code (PSC) Manual for other qc/test/inspect – miscellaneous, under H (Quality Control, Test, Inspection) and H9 (Other Quality, Test, Inspect SVCS). Agencies put a PSC on every contract to record what they bought.
What is the difference between a PSC and a NAICS code?
A PSC describes what the government is buying. A NAICS code describes the industry of the business doing the work, and it sets the SBA size standard for small business set-asides. Every contract notice has both.
Which NAICS code goes with PSC H999?
Most federal contract dollars under PSC H999 go with NAICS 541330 (Engineering Services), according to USAspending.gov. The contracting officer picks the NAICS code for each solicitation, so check the notice.
How do I find contracts that use PSC H999?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. 3 open notices use PSC H999 right now. FedReady can match new ones to your business and email you, free.