The Switch,pressure, cataloged under National Stock Number 5930-00-121-2272, 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 27 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5930-00-121-2272 |
| Primary Part Number | 67A81-B155-4 |
| Item Name | Switch,pressure |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Contact Action Stimulus | INCREASE |
| Terminal Type | SCREW |
| Mounting Facility Pattern | TWO POSITION IN-LINE |
| Contact Load Current Rating | 8.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE |
| Contact Load Current Rating | 16.0 AMPERES RESISTIVE LOAD SECOND VOLTAGE |
| Mounting Method | BASE AND THREADED HOLE(S) |
| Body Height | 2.641 INCHES NOMINAL IN |
| Style Designator | RECTANGULAR |
| Pressure Switch Type | DIFFERENTIAL |
| Features Provided | CAPILLARY TUBE END SEAL CONNECTION |
| Distance Between Mounting Facility Centers | 0.688 INCHES NOMINAL IN |
| Nominal Thread Size | 0.250 INCHES SINGLE PRESSURE CONNECTION IN |
| Nominal Thread Size | 0.164 INCHES ALL THREADED HOLE IN |
| Body Length | 2.188 INCHES NOMINAL IN |
| Pressure Connector Type | SWIVEL NUT, COMPRESSION, THREADED INTERNAL SINGLE CONNECTION |
| Inside Diameter | 0.250 INCHES NOMINAL SINGLE CONNECTION IN |
| Nonpile-Up Contact Arrangement | 1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION |
| Media for Which Designed | GAS OR LIQUID |
| Thread Class | 2B ALL THREADED HOLE |
| Contact Stimulus Rating | 395.00 ACTUATION POINT NOMINAL POUNDS PER SQUARE INCH GAGE |
| Thread Quantity Per Inch | 18 SINGLE PRESSURE CONNECTION |
| Thread Quantity Per Inch | 32 ALL THREADED HOLE |
| Thread Series Designator | NPT SINGLE PRESSURE CONNECTION |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) ALL THREADED HOLE |
| Contact Adjustability | DEACTUATION POINT NOT ADJUSTABLE, MANUAL RESET AND ACTUATION POINT NOT ADJUSTABLE |
| Contact Voltage Rating in Volts | 240.0 AC AT SEA LEVEL FIRST VOLTAGE |
| Contact Voltage Rating in Volts | 120.0 AC 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 |
|---|---|
| 67A81-B155-4 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| CS7420C67 | 5/2 Secondary reference U.S. Government activity |
| C24422-4 | 5/9 Secondary reference Rheem Mfg Co Air Conditioning Div |
NSN 5930-00-121-2272 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 5930-00-121-2272 has 1 manufacturer part number on file: 67A81-B155-4 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 67A81-B155-4: Overall Height: 2.641 INCHES NOMINAL IN; Contact Action Stimulus: INCREASE; Terminal Type: SCREW; Mounting Facility Pattern: TWO POSITION IN-LINE. 27 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.