The Switch,inertia, cataloged under National Stock Number 5930-01-321-3209, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Inertia Switch, Inc. Dba Inertia Switch Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-01-321-3209 |
| Primary Part Number | 3L0-453-2.5 |
| Item Name | Switch,inertia |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Inertia Switch, Inc. Dba Inertia Switch Inc |
| Status | ACTIVE |
| Contact Action Stimulus | DECREASE |
| Terminal Type | THREADED STUD |
| Mounting Facility Pattern | FOUR POSITION RECTANGULAR |
| Contact Load Current Rating | 5.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE |
| Mounting Method | BRACKET(S) AND UNTHREADED HOLE(S) |
| Body Height | 1.187 INCHES NOMINAL IN |
| Unthreaded Mounting Hole Diameter | 0.187 INCHES NOMINAL IN |
| Style Designator | RECTANGULAR W/MOUNTING LUGS |
| Distance Between Mounting Facility Centers | 2.625 INCHES NOMINAL IN |
| Body Length | 2.000 INCHES NOMINAL IN |
| Operating Temp Rating | -65.0 FAHRENHEIT MINIMUM AND 250.0 FAHRENHEIT MAXIMUM DEGF |
| Nonpile-Up Contact Arrangement | 1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION |
| Contact Stimulus Rating | 2.50 ACTUATION POINT NOMINAL GRAVITY UNITS |
| Contact Adjustability | ACTUATION POINT NOT ADJUSTABLE |
| Contact Voltage Rating in Volts | 28.0 DC AT SEA LEVEL SINGLE VOLTAGE |
| Longest Horizontal Distance Between Mounting Centers | 1.750 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3L0-453-2.5 PRIMARY | Inertia Switch, Inc. Dba Inertia Switch Inc (USA) |
| Reference | Meaning |
|---|---|
| 3L0-453-2.5 | 5/9 Secondary reference Aerospatiale Helicopter Corp |
NSN 5930-01-321-3209 is a Switch,inertia, manufactured by Inertia Switch, Inc. Dba Inertia Switch Inc, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-321-3209 has 1 manufacturer part number on file: 3L0-453-2.5 (Inertia Switch, Inc. Dba Inertia Switch Inc).
Key specifications for 3L0-453-2.5: Contact Action Stimulus: DECREASE; Terminal Type: THREADED STUD; Mounting Facility Pattern: FOUR POSITION RECTANGULAR; Contact Load Current Rating: 5.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE. 16 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.