The Relay,electromagnetic, cataloged under National Stock Number 5945-00-445-3658, 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 20 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5945-00-445-3658 |
| Primary Part Number | 161107 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Nonpile-Up Auxiliary Contact Arrangement | 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 440.0 AC |
| Mounting Facility Pattern | RECTANGULAR SINGLE MOUNTING FACILITY |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 2.750 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Main Contact Load Current Rating at Maximum Rated Voltage | 50.0 AMPERES AC RESISTIVE LOAD |
| Main Contact Load Current Rating at Maximum Rated Voltage | 3.0 AMPERES AC MOTOR LOAD |
| Duty Type | CONTINUOUS |
| Unthreaded Mounting Hole Diameter | 0.216 INCHES MINIMUM AND 0.224 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN |
| Winding DC Resistance Rating | 44.5 OHMS NOMINAL SINGLE WINDING |
| Auxiliary Contact Load Current Rating at Maximum Rated Voltage | 25.0 AMPERES AC RESISTIVE LOAD |
| Coil Quantity | 1 |
| Environmental Protection | HUMIDITY RESISTANT AND VIBRATION RESISTANT |
| Winding Quantity | 1 |
| Operating Voltage Rating and Type at Specified Temp | 28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 1.875 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Terminal Type and Quantity | 2 SCREW ENERGIZING ELEMENT |
| Terminal Type and Quantity | 8 THREADED STUD CONTACTS |
| Nonpile-Up Main Contact Arrangement | 3 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION |
| Auxiliary Contact Maximum Voltage Rating in Volts | 115.0 AC |
| 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 |
|---|---|
| 161107 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| 9207-3731 | Leach International Germany Gmbh (DEU) |
| 217320 | Aeromaritime Systembau Gmbh (DEU) |
| 9207-3731 | Leach International Corp Div Leach International Corporation (USA) |
| Reference | Meaning |
|---|---|
| GR835PH1 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 5945-00-445-3658 is a Relay,electromagnetic, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-445-3658 has 4 manufacturer part numbers on file: 161107 (Northrop Grumman Systems Corporation), 9207-3731 (Leach International Germany Gmbh), 217320 (Aeromaritime Systembau Gmbh), 9207-3731 (Leach International Corp Div Leach International Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 5305-00-712-9455, 4730-01-268-1807. Verify interchangeability with system specifications before substitution.
Key specifications for 161107: Nonpile-Up Auxiliary Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Height: 2.812 INCHES NOMINAL IN; Main Contact Maximum Voltage Rating in Volts: 440.0 AC. 20 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.