The Switch,pressure, cataloged under National Stock Number 5930-01-045-9651, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is L & L Boiler Maintenance Inc. Government technical data includes 24 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5930-01-045-9651 |
| Primary Part Number | 52485-2 |
| Item Name | Switch,pressure |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | L & L Boiler Maintenance Inc |
| Status | ACTIVE |
| Contact Action Stimulus | INCREASE |
| Terminal Type | SCREW |
| Overall Diameter | 3.125 INCHES NOMINAL IN |
| Contact Load Current Rating | 15.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE |
| Contact Load Current Rating | 500.0 MILLIAMPERES RESISTIVE LOAD SECOND VOLTAGE |
| Contact Load Current Rating | 250.0 MILLIAMPERES RESISTIVE LOAD THIRD VOLTAGE |
| Mounting Method | BASE AND THREADED HOLE(S) |
| Contact Adjustment Range | +0.15 TO 4.00 ACTUATION POINT INCHES OF WATER AND +0.15 TO 4.00 DEACTUATION POINT INCHES OF WATER |
| Pressure Switch Type | DIFFERENTIAL |
| Contact Adjustment Type | EXTERNAL DEACTUATION POINT SCREW AND EXTERNAL ACTUATION POINT SCREW |
| Features Provided | ELECTRICAL ACCESS PORT |
| Nominal Thread Size | 0.125 INCHES SINGLE PRESSURE CONNECTION IN |
| Nominal Thread Size | 0.190 INCHES ALL THREADED HOLE IN |
| Pressure Connector Type | PLAIN, THREADED INTERNAL ALL CONNECTIONS |
| Operating Temp Rating | -65.0 FAHRENHEIT MINIMUM AND 165.0 FAHRENHEIT MAXIMUM DEGF |
| Nonpile-Up Contact Arrangement | 1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY |
| Media for Which Designed | GAS |
| Thread Quantity Per Inch | 32 ALL THREADED HOLE |
| Thread Series Designator | NPT ALL PRESSURE CONNECTION |
| Thread Series Designator | UNF ALL THREADED HOLE |
| Contact Adjustability | DEACTUATION POINT ADJUSTABLE AND ACTUATION POINT ADJUSTABLE |
| Contact Voltage Rating in Volts | 480.0 AC AT SEA LEVEL FIRST VOLTAGE |
| Contact Voltage Rating in Volts | 250.0 DC AT SEA LEVEL THIRD VOLTAGE |
| Contact Voltage Rating in Volts | 125.0 DC AT SEA LEVEL SECOND 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 |
|---|---|
| 52485-2 PRIMARY | L & L Boiler Maintenance Inc (USA) |
| Reference | Meaning |
|---|---|
| 52485-2 | 3/9 Design control — primary reference D & J Parts Inc |
NSN 5930-01-045-9651 is a Switch,pressure, manufactured by L & L Boiler Maintenance Inc, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-045-9651 has 1 manufacturer part number on file: 52485-2 (L & L Boiler Maintenance Inc).
Key specifications for 52485-2: Contact Action Stimulus: INCREASE; Terminal Type: SCREW; Overall Diameter: 3.125 INCHES NOMINAL IN; Contact Load Current Rating: 15.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE. 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.