Electrical & Electronic Components

This class covers the electrical and electronic hardware built to Military Standard and federal specification: fixed resistors and capacitors, fuses, toggle switches, electrical connectors and contacts, terminal lugs and hardware, insulating sleeving and materials, and incandescent lamps. Each carries the same identification model as the rest of the catalog — a spec number that fixes its electrical characteristics (resistance, capacitance, current rating, voltage), its physical configuration, and its material — so a component called out on a wiring diagram or bill of materials can be sourced from any qualified manufacturer building to that same spec.

Ordering runs from whichever identifier a buyer has: a spec number or part number resolves to an NSN, and the NSN’s federal record carries the component’s technical characteristics and manufacturer cross-references, so a resistor, connector, or lamp pulled from an old harness or a legacy drawing can be positively identified before it’s requoted or replaced.

Components in this class populate control panels, wiring harnesses, instrument panels, and lighting circuits — anywhere a circuit calls for a specific electrical value or connector configuration rather than a brand. Atlas Air Supply quotes this hardware against its governing specification under CAGE 224F0.

What does "fixed composition resistor" mean, and how do I cross-reference one?

A fixed composition resistor is a resistor with a set (non-adjustable) resistance value, made from a carbon-composition element — one of several fixed-resistor constructions federal spec distinguishes by material and tolerance. To cross-reference one, its spec number or NSN carries the resistance value, tolerance, and power rating in its federal record, which is the reliable way to match a replacement rather than reading markings off the component body alone.

How do I identify the right connector or terminal for a wiring harness?

A connector or terminal’s spec number or NSN resolves to its federal record — contact configuration, mounting type, and manufacturer cross-references — which confirms fit and pinout before ordering. Matching a harness connector by physical appearance alone can miss a keying or contact-count difference that the spec number makes explicit.