FSC 5905

Includes Varistors; Resistive ballast Tubes; Rheostats; Resistor Networks; Resistor Mounting Hardware; Thermistors./
Excludes Resistance Wire./

FSC 5910

Includes Interference Filter Capacitors; Capacitor Mounting Hardware.
Excludes Semiconductor Devices and Associated Hardware.

FSC 5915

Note-This class includes those filters and networks which consist of a combination of resistors, capacitors, or coils, but not a combination of resistors only (classified in 5905), capacitors only (classified in 5910), or coils only (classified in 5950).


FSC 5920

Includes Fuseholders; Fuse Boxes; Fuse Posts; Fuse Links; Fuse Blocks; Current Limiters; Corona Balls; Electrostatic Dischargers.
Excludes Circuit Breakers.

FSC 5925

Includes Circuit Breakers and Cutouts.
Excludes Relays.

FSC 5930

Includes Rotary, Knife, Toggle, Push Button, Mercury, Thermostatic, and Differential Pressure Switches.
Excludes Switchgear.

FSC 5935

Includes Plugs; Jacks; Receptacles, Electronic Component Sockets and Associated Accessories
Excludes Interconnectors, Fiber Optic

FSC 5940

Includes Binding Posts; Battery Clips; Stud Terminals; Test Clips.
Excludes Caps, Electrical; Clips, Electrical; and Contacts, Electrical.

FSC 5945

Includes Electromagnetic Actuators.
Excludes Contractors.

FSC 5950

Includes Coils, except ignition and magneto; coil assemblies; reactors; transformers.

FSC 5955

Includes Crystal Units, Processed Unmounted Crystals, Crystal Controlled Oscillators and Noncrystal Controlled Oscillators
Excludes Crystal Controlled Oscillators and Noncrystal Controlled Oscillators which meet the definition of the term "electronic module" as defined for FSC 5963 and Microcircuits

FSC 5960

Includes Rectifying Tubes; Photoelectric Tubes; Electron Vibrator Tubes.
Excludes Transistors; Tube Sockets; X-ray Tubes; Semiconductor Devices and Associated Hardware.

FSC 5961

Includes Semiconductor Assemblies; Semiconductor Diodes; Semiconductor Rectifiers, Semiconductor Thyristors; Transistors; Unitized Semiconductors; Associated Hardware except Sockets.
Excludes Microcircuits; Optoelectronic Devices and Associated Hardware.

FSC 5962

Note-(1) A microcircuit is defined as follows: A small circuit having a high equivalent circuit element density, which is considered as a single part composed of interconnected elements placed and/or formed on or within a single substrate to perform an electronic circuit function. The elements may be formed on or within a semiconductor material substrate; may consist of conductive film(s) formed on an insulating substrate; or may be a combination of one or both of these types with discrete elements. (2) The term "microcircuit", as applied to circuit devices included in this class, is delimited to exclude items consisting solely of interconnected "microcomponents" (discrete miniaturized components). Also excluded are items fabricated in the form of monolithic thick-film or thin-film structures that in themselves are not functional electronic circuits (e.g., Capacitors, Resistors, Transistors, or "arrays" thereof).

Includes Integrated Circuit Devices; Integrated Circuit Modules, Integrated Electronic Devices: Hybrid, Magnetic, Molecular, Opto-Electronic, and Thin Film.
Excludes Single Circuit Elements such as Capacitors; Resistors; Diodes and Transistors; Printed Circuit Boards and Circuit Card Assemblies; and Filters and Networks.

FSC 5963

Note-The term "electronic module" as used in this class designates an electronic component designed for use in various equipment or end item applications, and capable of controlling voltage and/or current to produce gain, oscillation, switching, or similar integral electronic functions. It consists of a collection of miniaturized electronic parts and/or elements in a single replaceable package with plug-in mounting which will also complete the required electrical connections. It is not normally subject to disassembly as distinguished from such items as CIRCUIT CARD ASSEMBLY and ELECTRONIC COMPONENTS ASSEMBLY. These modules conform to industry or government specifications/standards that define all physical dimensions and electrical parameters required to promote commonality and ensure proper operational performance.


Excludes MICROCIRCUITS; Electronic Test Equipment Plug-In Units.

FSC 5970

Includes Tube, Knob, Cleat, Strain, and Standoff Insulators; Feed Thru Insulators; Bead Insulators; Varnish Cambric Tape; Friction Tape.

FSC 5975

Includes Conduit; Raceways; Face Plates; Condulets; Outlet and Junction Boxes; Pole Line Hardware, not elsewhere classifiable.

FSC 5977

Includes Brushes for electrical rotating equipment; Carbon Stock for Brushes; Brush Arm and Holders; Lighting Electrodes.
Excludes Anodes; Cathodes; Welding Electrodes.

FSC 5980

Includes Optoelectronic devices and assemblies which display numeric, alpha-numeric, symbolic, or graphic information, emitters, and nondisplay optoelectronic devices, such as couplers, detectors, and switches which perform an active function in an electronic system%
Excludes electric lighting fixtures, lamps, and associated hardware%

FSC 5985

Includes Aerials; Masts; Tower Equipment; Attenuators; Couplers; Transmission Lines.
Excludes Tower Structures.

FSC 5990


Excludes Synchro Systems; Servo Mechanisms.

FSC 5995

Note-This class includes only those types of cable, cord, and Wire Assemblies and Sets (and Wiring Harnesses) used on or with equipment and components covered by Groups 58, 59 and 70. Cable, Cord, Wire Assemblies, and Sets (Wiring Harnesses) used on or with equipment classified in FSC Groups other than Groups 58, 59, or 70 are classified in FSC Class 6150 if multiapplication, or classified with the next higher classifiable assembly if specially designed.


Excludes Cable Assemblies, Fiber Optic.

FSC 5996

Includes Audio Amplifiers, Complementary Amplifiers, Amplifiers, Operational Amplifiers, Power Amplifiers, Radio Frequency Amplifiers, Signal Amplifiers, Video Amplifiers, and Magnetic Amplifiers.
Excludes multi-functional items such as Amplifier-Detector, Amplifier-Mixer and microcircuit devices.

FSC 5998


Excludes circuit card and electronic component assemblies which can be identified to a more definitive Approved Item Name.

FSC 5999

Includes Permanent Magnets and Magnetostriction Elements; Caps, Clips, and Contacts, Electrical.