The Relay,electromagnetic, cataloged under National Stock Number 5945-00-666-0000, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-00-666-0000 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 SLOTTED HOLE SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 24.0 DC |
| Mounting Facility Pattern | DIAGONAL SINGLE MOUNTING FACILITY |
| Overall Diameter | 3.500 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 0.390 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Main Contact Load Current Rating at Maximum Rated Voltage | 50.0 AMPERES DC RESISTIVE LOAD |
| Duty Type | CONTINUOUS |
| Coil Quantity | 1 |
| Environmental Protection | DUSTPROOF AND HERMETIC |
| Winding Quantity | 1 |
| Operating Voltage Rating and Type at Specified Temp | 24.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 0.281 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Mounting Slot Width | 2.109 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| 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 |
|---|---|
| 5608-5 | 5/9 Secondary reference U.S. Government activity |
| FM16626 | 3/9 Design control — primary reference Long-Airdox Co |
NSN 5945-00-666-0000 is a Relay,electromagnetic, classified under FSC 5945, Relays and Solenoids. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5120-01-431-1116. Verify interchangeability with system specifications before substitution.
Key specifications for 5945-00-666-0000: Mounting Facility Type and Quantity: 2 SLOTTED HOLE SINGLE MOUNTING FACILITY; Main Contact Maximum Voltage Rating in Volts: 24.0 DC; Mounting Facility Pattern: DIAGONAL SINGLE MOUNTING FACILITY; Overall Diameter: 3.500 INCHES NOMINAL IN. 13 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.