The Physical Properties Testing and Inspection PSC (6635) encompasses a range of specialized equipment and services used to evaluate and verify the physical characteristics of materials and components. This category includes both destructive and nondestructive inspection tools such as fluorescent penetrant inspection units, magnetic inspection units, industrial X-ray machines and film, tensiometers, and material hardness testers. These resources are critical to ensuring that materials meet strict quality and safety standards before they are integrated into government projects or systems. Government agencies utilize this PSC to procure high-quality testing and inspection tools that support rigorous material verification processes.

Includes for PSC 6635

This PSC code covers the following products and services:

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 for PSC 6635

This PSC code does NOT cover the following:

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

Typical Buyers & Agencies for PSC 6635

Common buyers under PSC 6635 include defense agencies such as the Department of Defense, the Department of Energy, and other federal entities responsible for infrastructure, manufacturing, and safety compliance. These agencies require reliable testing and inspection equipment to validate the integrity and performance of critical materials used in weapons systems, construction, and energy projects. Procurement under this PSC supports mission assurance by enabling thorough material evaluation and compliance with stringent federal standards.

Common Contract Types for PSC 6635

Contracts awarded under PSC 6635 typically include firm-fixed-price, indefinite delivery/indefinite quantity (IDIQ), and task order contracts. Procurement methods may range from competitive bidding to sole-source awards depending on the specificity and availability of specialized inspection equipment. These contracts often support ongoing maintenance, testing programs, or new equipment acquisition to ensure continuous quality control within government operations.

Plain-Language Breakdown for PSC 6635

Includes destructive and nondestructive testing equipment such as fluorescent penetrant and magnetic inspection units.
Primarily used by defense, energy, and infrastructure agencies to ensure material quality and safety.
Excludes general purpose measuring tools and precision measuring tools covered under separate FSC codes.
Contracts typically take the form of firm-fixed-price or IDIQ task orders to maintain testing capabilities.
Closely associated with NAICS codes for testing laboratories and technical consulting services.
Essential for quality assurance and compliance in government manufacturing and construction projects.

Related Categories for PSC 6635

Other categories at the same level as 6635

6605 NAVIGATIONAL INSTRUMENTS

Navigational Instruments

6610 FLIGHT INSTRUMENTS

Flight Instruments

6615 AUTOMATIC PILOT MECHANISMS AND AIRBORNE GYRO COMPONENTS

Automatic Pilot Mechanisms and Airborne Gyro Components

6620 ENGINE INSTRUMENTS

Engine Instruments

6625 ELECTRICAL AND ELECTRONIC PROPERTIES MEASURING AND TESTING INSTRUMENTS

Electrical and Electronic Properties Measuring and Testing Instruments

6630 CHEMICAL ANALYSIS INSTRUMENTS

Chemical Analysis Instruments

6632 ANALYSIS INSTRUMENTS, MEDICAL LABORATORY USE

Analysis Instruments, Medical Laboratory Use

6636 ENVIRONMENTAL CHAMBERS AND RELATED EQUIPMENT

Environmental Chambers and Related Equipment

6640 LABORATORY EQUIPMENT AND SUPPLIES

Laboratory Equipment and Supplies

6645 TIME MEASURING INSTRUMENTS

Time Measuring Instruments

6650 OPTICAL INSTRUMENTS, TEST EQUIPMENT, COMPONENTS AND ACCESSORIES

Optical Instruments, Test Equipment, Components and Accessories

6655 GEOPHYSICAL INSTRUMENTS

Geophysical Instruments

6660 METEOROLOGICAL INSTRUMENTS AND APPARATUS

Meteorological Instruments and Apparatus

6665 HAZARD-DETECTING INSTRUMENTS AND APPARATUS

Hazard-Detecting Instruments and Apparatus

6670 SCALES AND BALANCES

Scales and Balances

6675 DRAFTING, SURVEYING, AND MAPPING INSTRUMENTS

Drafting, Surveying, and Mapping Instruments

6680 LIQUID AND GAS FLOW, LIQUID LEVEL, AND MECHANICAL MOTION MEASURING INSTRUMENTS

Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments

6685 PRESSURE, TEMPERATURE, AND HUMIDITY MEASURING AND CONTROLLING INSTRUMENTS

Pressure, Temperature, and Humidity Measuring and Controlling Instruments

6695 COMBINATION AND MISCELLANEOUS INSTRUMENTS

Combination and Miscellaneous Instruments

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