The Relay,electromagnetic, cataloged under National Stock Number 5945-00-258-1987, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5945-00-258-1987 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 3 THREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Pile-Up Main Contact Form Arrangement | 1C |
| Main Contact Maximum Voltage Rating in Volts | 48.0 DC |
| Mounting Facility Pattern | IN-LINE SINGLE MOUNTING FACILITY |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 0.344 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Main Contact Load Current Rating at Maximum Rated Voltage | 500.0 MILLIAMPERES DC RESISTIVE LOAD |
| Duty Type | CONTINUOUS |
| Winding DC Resistance Rating | 100.0 OHMS NOMINAL FIRST WINDING |
| Winding DC Resistance Rating | 100.0 OHMS NOMINAL THIRD WINDING |
| Winding DC Resistance Rating | 395.0 OHMS NOMINAL SECOND WINDING |
| Nominal Operating Current Rating and Type | 24.0 MILLIAMPERES DC SECOND WINDING |
| Nominal Operating Current Rating and Type | 46.0 MILLIAMPERES DC FIRST WINDING |
| Nominal Operating Current Rating and Type | 50.0 MILLIAMPERES DC THIRD WINDING |
| Nominal Thread Size | 0.164 INCHES SINGLE MOUNTING FACILITY IN |
| Coil Quantity | 3 |
| Environmental Protection | HERMETIC |
| Winding Quantity | 3 |
| Thread Class | 2B SINGLE MOUNTING FACILITY |
| Thread Quantity Per Inch | 32 SINGLE MOUNTING FACILITY |
| Terminal Type and Quantity | 9 PIN ALL FUNCTIONS |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 593506 | 5/9 Secondary reference Itt Telecom Products Corp Network Systems Div |
| 593506 | 5/9 Secondary reference Global-Tron Inc |
| 593506ANDSB1791 | 3/9 Design control — primary reference Itt Telecom Products Corp Network Systems Div |
NSN 5945-00-258-1987 is a Relay,electromagnetic, classified under FSC 5945, Relays and Solenoids. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 1660-00-403-0334, 5895-00-739-4523. Verify interchangeability with system specifications before substitution.
Key specifications for 5945-00-258-1987: Mounting Facility Type and Quantity: 3 THREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Height: 1.710 INCHES NOMINAL IN; Pile-Up Main Contact Form Arrangement: 1C; Main Contact Maximum Voltage Rating in Volts: 48.0 DC. 21 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.