The Switch,pressure, cataloged under National Stock Number 5930-00-185-8023, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Avox Systems Inc Dba Avox Systems Inc. Government technical data includes 24 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-00-185-8023 |
| Primary Part Number | MK71-3 |
| Item Name | Switch,pressure |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Avox Systems Inc Dba Avox Systems Inc |
| Status | ACTIVE |
| Width Across Flats | 0.750 INCHES NOMINAL IN |
| Contact Action Stimulus | INCREASE |
| Terminal Type | CONNECTOR, RECEPTACLE |
| Overall Diameter | 0.750 INCHES NOMINAL IN |
| Proof Pressure | 3200.00 POUNDS PER SQUARE INCH LBS |
| Contact Load Current Rating | 2.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE |
| Mounting Method | INLET CONNECTION |
| Thread Length | 0.550 INCHES NOMINAL SINGLE PRESSURE CONNECTION IN |
| Sensing Element Burst Pressure | 4500.00 POUNDS PER SQUARE INCH LBS |
| Style Designator | CYLINDRICAL |
| Outside Diameter | 0.438 INCHES NOMINAL SINGLE CONNECTION IN |
| Pressure Switch Type | GAGE |
| Features Provided | ELECTRICAL BOX CONNECTOR |
| Nominal Thread Size | 0.438 INCHES SINGLE PRESSURE CONNECTION IN |
| Body Length | 1.588 INCHES NOMINAL IN |
| Pressure Connector Type | FLARED, THREADED EXTERNAL SINGLE CONNECTION |
| Operating Temp Rating | -65.0 FAHRENHEIT MINIMUM AND 275.0 FAHRENHEIT MAXIMUM DEGF |
| Nonpile-Up Contact Arrangement | 1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY |
| Media for Which Designed | LIQUID |
| Thread Class | 2A SINGLE PRESSURE CONNECTION A |
| Contact Stimulus Rating | 750.00 ACTUATION POINT NOMINAL POUNDS PER SQUARE INCH AND 625.00 DEACTUATION POINT NOMINAL POUNDS PER SQUARE INCH AND 125.00 DIFFERENTIAL POINT NOMINAL POUNDS PER SQUARE INCH |
| Thread Series Designator | UNF SINGLE PRESSURE CONNECTION |
| Contact Adjustability | DEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE |
| Contact Voltage Rating in Volts | 28.0 DC AT SEA LEVEL SINGLE VOLTAGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 5930-00-185-8023 is a Switch,pressure, manufactured by Avox Systems Inc Dba Avox Systems Inc, classified under FSC 5930, Switches. Status: active.
NSN 5930-00-185-8023 has 2 manufacturer part numbers on file: MK71-3 (Avox Systems Inc Dba Avox Systems Inc), 12001159 (Army, United States Department of the Dba Rock Island Arsenal Jmtc).
Key specifications for MK71-3: Width Across Flats: 0.750 INCHES NOMINAL IN; Contact Action Stimulus: INCREASE; Terminal Type: CONNECTOR, RECEPTACLE; Overall Diameter: 0.750 INCHES NOMINAL IN. 24 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.