The Switch,pressure, cataloged under National Stock Number 5930-01-498-1817, 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 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5930-01-498-1817 |
| Primary Part Number | 4500027-01 |
| Item Name | Switch,pressure |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Contact Action Stimulus | DECREASE |
| Mounting Method | BASE |
| Style Designator | CYLINDRICAL W/FLANGE |
| Pressure Switch Type | ABSOLUTE |
| Body Length | 4.460 INCHES NOMINAL IN |
| Media for Which Designed | GAS OR LIQUID |
| 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 |
|---|---|
| 4500027-01 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 100P4S1523-01 | 5/2 Secondary reference U.S. Government activity |
| 100P4S1523 | D/9 Drawing number reference only U.S. Government activity |
NSN 5930-01-498-1817 is a Switch,pressure, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-498-1817 has 1 manufacturer part number on file: 4500027-01 (Northrop Grumman Systems Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 5930-01-498-1819, 5930-01-526-7901. Verify interchangeability with system specifications before substitution.
Key specifications for 4500027-01: Overall Height: 2.850 INCHES NOMINAL IN; Contact Action Stimulus: DECREASE; Mounting Method: BASE; Style Designator: CYLINDRICAL W/FLANGE. 7 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.