The Switch,proximity, cataloged under National Stock Number 5930-01-559-6789, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Topworx Inc. Government technical data includes 14 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-01-559-6789 |
| Primary Part Number | 74-13568-B25 |
| Item Name | Switch,proximity |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Topworx Inc |
| Status | ACTIVE |
| Width Across Flats | 0.625 INCHES NOMINAL IN |
| Terminal Type | WIRE LEAD |
| Contact Load Current Rating | 4.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE |
| Contact Load Current Rating | 3.0 AMPERES RESISTIVE LOAD THIRD VOLTAGE |
| Contact Load Current Rating | 2.0 AMPERES RESISTIVE LOAD SECOND VOLTAGE |
| Contact Load Current Rating | 1.2 AMPERES RESISTIVE LOAD FOURTH VOLTAGE |
| Mounting Method | BASE |
| Style Designator | CYLINDRICAL |
| Operating Temp Rating | -40.0 FAHRENHEIT MINIMUM AND 221.0 FAHRENHEIT MAXIMUM DEGF |
| Nonpile-Up Contact Arrangement | 1 POLE, DOUBLE THROW, THREE POSITIONS MAINTAINED |
| Contact Voltage Rating in Volts | 24.0 DC AT SEA LEVEL THIRD VOLTAGE |
| Contact Voltage Rating in Volts | 240.0 AC AT SEA LEVEL SECOND VOLTAGE |
| Contact Voltage Rating in Volts | 120.0 AC AT SEA LEVEL FIRST VOLTAGE |
| Contact Voltage Rating in Volts | 48.0 DC AT SEA LEVEL FOURTH 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 |
|---|---|
| 74-13568-B25 PRIMARY | Topworx Inc (USA) |
| Reference | Meaning |
|---|---|
| 16211000 ITEM 52 | 5/1 Secondary reference Gulf Coast Holdings, Inc Dba Unidynamics |
| 16211400 ITEM 7 | 5/1 Secondary reference Gulf Coast Holdings, Inc Dba Unidynamics |
| 16211100 ITEM 37 | 5/1 Secondary reference Gulf Coast Holdings, Inc Dba Unidynamics |
| 16211600 ITEM 37 | 5/1 Secondary reference Gulf Coast Holdings, Inc Dba Unidynamics |
| 16211900 ITEM 19 | 5/1 Secondary reference Gulf Coast Holdings, Inc Dba Unidynamics |
NSN 5930-01-559-6789 is a Switch,proximity, manufactured by Topworx Inc, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-559-6789 has 1 manufacturer part number on file: 74-13568-B25 (Topworx Inc).
Key specifications for 74-13568-B25: Width Across Flats: 0.625 INCHES NOMINAL IN; Terminal Type: WIRE LEAD; Contact Load Current Rating: 4.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE; Contact Load Current Rating: 3.0 AMPERES RESISTIVE LOAD THIRD VOLTAGE. 14 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.