The Switch,pressure, cataloged under National Stock Number 5930-00-148-4729, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Northrop Grumman Systems Corporation. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-00-148-4729 |
| Primary Part Number | GS535S4 |
| Item Name | Switch,pressure |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Frequency in Hertz | 60.0 SINGLE VOLTAGE |
| Contact Action Stimulus | INCREASE |
| Terminal Type | WIRE LEAD |
| Mounting Facility Pattern | TWO POSITION IN-LINE |
| Contact Load Current Rating | 15.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE |
| Mounting Method | BASE |
| Style Designator | CYLINDRICAL |
| Outside Diameter | 0.125 INCHES NOMINAL ALL CONNECTIONS IN |
| Pressure Switch Type | GAGE |
| Distance Between Mounting Facility Centers | 4.750 INCHES NOMINAL IN |
| Nominal Thread Size | 0.125 INCHES SINGLE PRESSURE CONNECTION IN |
| Pressure Connector Type | PLAIN, THREADED EXTERNAL ALL CONNECTIONS |
| Nonpile-Up Contact Arrangement | 1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY |
| Media for Which Designed | GAS OR LIQUID |
| Thread Class | 3A ALL PRESSURE CONNECTION A |
| Contact Stimulus Rating | 0.10 DIFFERENTIAL POINT NOMINAL INCHES OF WATER |
| Thread Quantity Per Inch | 27 ALL PRESSURE CONNECTION |
| Thread Series Designator | NPT ALL PRESSURE CONNECTION |
| Contact Adjustability | DEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE |
| Contact Voltage Rating in Volts | 250.0 AC 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 |
| Part Number | Manufacturer |
|---|---|
| GS535S4 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 130D8HA5-448A | 5/2 Secondary reference U.S. Government activity |
| 448A | 5/9 Secondary reference U.S. Government activity |
| 448A-130D8HA5 | 5/2 Secondary reference U.S. Government activity |
NSN 5930-00-148-4729 is a Switch,pressure, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5930, Switches. Status: active.
NSN 5930-00-148-4729 has 1 manufacturer part number on file: GS535S4 (Northrop Grumman Systems Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 6625-00-759-0966, 5930-00-777-3467. Verify interchangeability with system specifications before substitution.
Key specifications for GS535S4: Overall Height: 4.000 INCHES NOMINAL IN; Frequency in Hertz: 60.0 SINGLE VOLTAGE; Contact Action Stimulus: INCREASE; Terminal Type: WIRE LEAD. 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.