The Switch,pressure, cataloged under National Stock Number 5930-01-312-3422, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Automatic Switch Company Dba Asco. Government technical data includes 20 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-01-312-3422 |
| Primary Part Number | PB31B |
| Item Name | Switch,pressure |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Automatic Switch Company Dba Asco |
| Status | ACTIVE |
| Contact Action Stimulus | INCREASE |
| Terminal Type | SCREW |
| Contact Load Current Rating | 0.5 AMPERES RESISTIVE LOAD THIRD VOLTAGE |
| Contact Load Current Rating | 5.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE |
| Contact Load Current Rating | 5.0 AMPERES RESISTIVE LOAD SECOND VOLTAGE |
| Contact Load Current Rating | 0.25 AMPERES RESISTIVE LOAD FOURTH VOLTAGE |
| Mounting Method | INPUT PORT |
| Contact Adjustment Range | +2.00 TO 18.00 ACTUATION POINT POUNDS PER SQUARE INCH GAGE |
| Style Designator | RECTANGULAR |
| Pressure Switch Type | GAGE |
| Contact Adjustment Type | INTERNAL ACTUATION POINT HEX NUT |
| Features Provided | ELECTRICAL ACCESS PORT |
| Nonpile-Up Contact Arrangement | 1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY |
| Media for Which Designed | GAS OR LIQUID |
| Contact Adjustability | ACTUATION POINT ADJUSTABLE |
| Contact Voltage Rating in Volts | 250.0 DC AT SEA LEVEL FOURTH VOLTAGE |
| Contact Voltage Rating in Volts | 125.0 DC AT SEA LEVEL THIRD VOLTAGE |
| Contact Voltage Rating in Volts | 250.0 AC AT SEA LEVEL SECOND VOLTAGE |
| Contact Voltage Rating in Volts | 125.0 AC AT SEA LEVEL FIRST VOLTAGE |
| Hazardous Locations/environmental Protection | WATERTIGHT |
| 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 |
|---|---|
| PB31B PRIMARY | Automatic Switch Company Dba Asco (USA) |
| Reference | Meaning |
|---|---|
| PB31A/RE30A44 | 5/9 Secondary reference Automatic Switch Company Dba Asco |
| PB13A | 5/9 Secondary reference Automatic Switch Company Dba Asco |
NSN 5930-01-312-3422 is a Switch,pressure, manufactured by Automatic Switch Company Dba Asco, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-312-3422 has 1 manufacturer part number on file: PB31B (Automatic Switch Company Dba Asco).
Key specifications for PB31B: Overall Height: 5.344 INCHES NOMINAL IN; Contact Action Stimulus: INCREASE; Terminal Type: SCREW; Contact Load Current Rating: 0.5 AMPERES RESISTIVE LOAD THIRD VOLTAGE. 20 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.