The Switch,pressure, cataloged under National Stock Number 5930-01-055-3963, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. 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 | 5930-01-055-3963 |
| Primary Part Number | 639AS1359 |
| Item Name | Switch,pressure |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Width Across Flats | 0.750 INCHES NOMINAL IN |
| Frequency in Hertz | 60.0 SINGLE VOLTAGE |
| Contact Action Stimulus | INCREASE |
| Terminal Type | WIRE LEAD |
| Overall Diameter | 0.870 INCHES MAXIMUM IN |
| Proof Pressure | 300.00 POUNDS PER SQUARE INCH LBS |
| Contact Load Current Rating | 5.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE |
| Mounting Method | INPUT PORT |
| Contact Adjustment Range | +4.00 TO 22.00 ACTUATION POINT POUNDS PER SQUARE INCH GAGE AND +2.00 TO 20.00 DEACTUATION POINT POUNDS PER SQUARE INCH GAGE |
| Thread Length | 0.650 INCHES NOMINAL SINGLE PRESSURE CONNECTION IN |
| Style Designator | CYLINDRICAL |
| Outside Diameter | 0.250 INCHES NOMINAL SINGLE CONNECTION IN |
| Pressure Switch Type | GAGE |
| Contact Adjustment Type | EXTERNAL ACTUATION POINT LOCK RING AND EXTERNAL DEACTUATION POINT LOCK RING |
| Features Provided | ELECTRICAL ACCESS PORT |
| Nominal Thread Size | 0.250 INCHES SINGLE PRESSURE CONNECTION IN |
| Body Length | 1.850 INCHES NOMINAL IN |
| Pressure Connector Type | PLAIN, THREADED EXTERNAL SINGLE CONNECTION |
| Nonpile-Up Contact Arrangement | 1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY |
| Media for Which Designed | GAS OR LIQUID |
| Contact Stimulus Rating | 3.00 DIFFERENTIAL POINT NOMINAL POUNDS PER SQUARE INCH GAGE |
| Thread Series Designator | NPT SINGLE PRESSURE CONNECTION |
| Contact Adjustability | DEACTUATION POINT ADJUSTABLE AND ACTUATION POINT ADJUSTABLE |
| Contact Voltage Rating in Volts | 115.0 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 |
NSN 5930-01-055-3963 is a Switch,pressure, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-055-3963 has 2 manufacturer part numbers on file: 607GKB1 (Custom Control Sensors, Llc), 639AS1359 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 639AS1359: Width Across Flats: 0.750 INCHES NOMINAL IN; Frequency in Hertz: 60.0 SINGLE VOLTAGE; Contact Action Stimulus: INCREASE; Terminal Type: WIRE LEAD. 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.