PSC H166: Quality Control – Instruments and Laboratory Equipment
H166 is the product and service code (PSC) federal agencies use for “Quality Control – Instruments and Laboratory Equipment”, in the “Quality Control Services” 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
- 0
Open count as of Nov 7, 2026, 5:35 AM ET. The search counts live, so its total can differ by a notice or two.
Where H166 sits in the PSC Manual
- Category: Service
- Group H: Quality Control, Test, Inspection
- Group H1: Quality Control Services
- Code H166: Quality Control – Instruments and Laboratory Equipment
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Related PSC codes
- H110 Quality Control – Weapons
- H111 Quality Control – Nuclear Ordnance
- H112 Quality Control – Fire Control Equipment
- H113 Quality Control – Ammunition and Explosives
- H114 Quality Control – Guided Missiles
- H115 Quality Control – Aircraft and Airframe Structural Components
- H116 Quality Control – Aircraft Components and Accessories
- H117 Quality Control – Aircraft Launching, Landing, and Ground Handling Equipment
- H118 Quality Control – Space Vehicles
- H119 Quality Control – Ships, Small Craft, Pontoons, and Floating Docks
Frequently asked questions
What is PSC H166?
H166 is the service code in the federal Product and Service Code (PSC) Manual named “Quality Control – Instruments and Laboratory Equipment”, under H (Quality Control, Test, Inspection) and H1 (Quality Control Services). 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.
How do I find contracts that use PSC H166?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. FedReady can match new ones to your business and email you, free.
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Sources: SAM.gov Contract Opportunities, USAspending.gov and the PSC Manual. How we count.