The Relay,electromagnetic, cataloged under National Stock Number 5945-00-539-2899, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5945-00-539-2899 |
| Primary Part Number | 74949 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Main Contact Maximum Voltage Rating in Volts | 70.0 DC |
| Main Contact Load Current Rating at Maximum Rated Voltage | 25.0 AMPERES DC RESISTIVE LOAD |
| Duty Type | INTERMITTENT |
| Winding DC Resistance Rating | 1.125 KILOHMS MINIMUM AND 1.375 KILOHMS MAXIMUM SINGLE WINDING |
| Nominal Operating Current Rating and Type | 56.0 MILLIAMPERES DC SINGLE WINDING |
| Coil Quantity | 1 |
| Winding Quantity | 1 |
| Operating Voltage Rating and Type at Specified Temp | 70.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 74949 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 74949 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
NSN 5945-00-539-2899 is a Relay,electromagnetic, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-539-2899 has 1 manufacturer part number on file: 74949 (Northrop Grumman Systems Corporation).
1 possible match (shared part number, not a government interchangeability claim): 2915-00-953-4982. Verify interchangeability with system specifications before substitution.
Key specifications for 74949: Overall Height: 4.620 INCHES NOMINAL IN; Main Contact Maximum Voltage Rating in Volts: 70.0 DC; Main Contact Load Current Rating at Maximum Rated Voltage: 25.0 AMPERES DC RESISTIVE LOAD; Duty Type: INTERMITTENT. 8 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.