PSC 6635: PHYSICAL PROPERTIES TESTING AND INSPECTION — Federal Procurement Code

66 - INSTRUMENTS AND LABORATORY EQPT L1: Industrial Products & Services

Description

Physical Properties Testing and Inspection

Includes

Destructive and Nondestructive Inspection Equipment such as Fluorescent Penetrant Inspection Units; Magnetic Inspection Units; Industrial X-Ray Machines; Industrial X-Ray Film; Tensiometers; Material Hardness Testers.

Excludes

General purpose Measuring Tools (FSC 5210) and Precision Measuring Tools and Inspection Gages (FSC 5220).

Suggested adjacent classifications

PSC codes describe what the government buys. These related classifications help connect procurement codes to industries, commodities, and trade workflows.

Related NAICS industries

334515

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals

54135

Building Inspection Services

541350

Building Inspection Services

54138

Testing Laboratories and Services

Related UNSPSC categories

41111716

Borescope inspection equipment

41111740

Automated optical inspection system

42251502

Cognitive or dexterity or perceptual or sensory evaluation or testing products

41113801

Geological compasses

Official data

Feature	Description
Official name	Product Service Codes (PSC)
Maintained by	U.S. federal acquisition community / GSA PSC Manual
Purpose	Classifies what the government buys: products and services
Primary use	Federal procurement reporting, contract categorization, spend analysis
Code type	Mixed/unspecified

When do you need PSC 6635?

1 Use PSC 6635 when identifying the product or service category on a U.S. federal contract.

2 Use it when filtering opportunities or spending data in SAM.gov, FPDS, or USASpending.

3 Use it when comparing a procurement category against related NAICS industries or UNSPSC commodities.

4 Use it when a contracting workflow needs the purchased item classification rather than the supplier industry code.