The Switch,pressure, cataloged under National Stock Number 5930-01-044-9250, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is R F Products, Inc. Government technical data includes 23 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 | 5930-01-044-9250 |
| Primary Part Number | 643276 |
| Item Name | Switch,pressure |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | R F Products, Inc |
| Status | ACTIVE |
| Contact Action Stimulus | INCREASE |
| Terminal Type | CONNECTOR, RECEPTACLE |
| Mounting Facility Pattern | THREE POSITION CIRCULAR |
| Overall Diameter | 1.420 INCHES MAXIMUM IN |
| Proof Pressure | 50.00 POUNDS PER SQUARE INCH ABSOLUTE LBS |
| Mounting Facility Circle Radius | 1.000 INCHES NOMINAL IN |
| Contact Load Current Rating | 5.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE |
| Mounting Method | THREADED HOLE(S) |
| Style Designator | CYLINDRICAL |
| Pressure Switch Type | ABSOLUTE |
| Nominal Thread Size | 0.112 INCHES ALL THREADED HOLE IN |
| Body Length | 2.030 INCHES NOMINAL IN |
| Pressure Connector Type | PLAIN, UNTHREADED INTERNAL SINGLE CONNECTION |
| Operating Temp Rating | -54.0 CELSIUS MINIMUM AND 71.0 CELSIUS MAXIMUM DEGC |
| Inside Diameter | 0.125 INCHES NOMINAL SINGLE CONNECTION IN |
| Nonpile-Up Contact Arrangement | 1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY |
| Media for Which Designed | GAS OR LIQUID |
| Thread Class | 2B ALL THREADED HOLE |
| Contact Stimulus Rating | 15.30 ACTUATION POINT NOMINAL POUNDS PER SQUARE INCH ABSOLUTE AND 13.30 DEACTUATION POINT NOMINAL POUNDS PER SQUARE INCH ABSOLUTE AND 2.00 DIFFERENTIAL POINT NOMINAL POUNDS PER SQUARE INCH ABSOLUTE |
| Thread Quantity Per Inch | 40 ALL THREADED HOLE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) ALL THREADED HOLE |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 214C40-1-56 | Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution (USA) |
| 643276 PRIMARY | R F Products, Inc (USA) |
NSN 5930-01-044-9250 is a Switch,pressure, manufactured by R F Products, Inc, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-044-9250 has 2 manufacturer part numbers on file: 214C40-1-56 (Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution), 643276 (R F Products, Inc).
Key specifications for 643276: Contact Action Stimulus: INCREASE; Terminal Type: CONNECTOR, RECEPTACLE; Mounting Facility Pattern: THREE POSITION CIRCULAR; Overall Diameter: 1.420 INCHES MAXIMUM IN. 23 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.