The Relay,electromagnetic, cataloged under National Stock Number 5945-00-086-2149, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is U S Dept of Transportation Federal Aviation Administration. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5945-00-086-2149 |
| Primary Part Number | 6FZ4C91963 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | U S Dept of Transportation Federal Aviation Administration |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 3 THREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 115.0 AC AND 12.0 DC |
| Mounting Facility Pattern | TRIANGLE SINGLE MOUNTING FACILITY |
| Main Contact Load Current Rating at Maximum Rated Voltage | 5.0 AMPERES AC AND 5.0 AMPERES DC RESISTIVE LOAD |
| Duty Type | CONTINUOUS |
| Center to Center Distance Between Mounting Facilities Parallel to the Altitude of an Isosceles Triangle | 2.625 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Winding DC Resistance Rating | 2.0 KILOHMS NOMINAL SINGLE WINDING |
| Nominal Operating Current Rating and Type | 20.0 MILLIAMPERES DC SINGLE WINDING |
| Coil Quantity | 1 |
| Winding Quantity | 1 |
| Operating Voltage Rating and Type at Specified Temp | 48.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 0.875 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Terminal Type and Quantity | 11 TAB, SOLDER LUG CONTACTS |
| Terminal Type and Quantity | 4 TAB, SOLDER LUG ENERGIZING ELEMENT |
| 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 |
|---|---|
| 6FZ4C91963 PRIMARY | U S Dept of Transportation Federal Aviation Administration (USA) |
| 271-1348P4 | Raytheon Company Dba Raytheon Co (USA) |
| Reference | Meaning |
|---|---|
| 91963 | C/1 Advisory reference — outside the item-of-supply concept Sigma Instruments Inc |
| 6FZ4C91963 | 5/9 Secondary reference Sigma Instruments Inc |
| 271-1348P4 | 5/9 Secondary reference Raytheon Company Div Corp |
NSN 5945-00-086-2149 is a Relay,electromagnetic, manufactured by U S Dept of Transportation Federal Aviation Administration, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-086-2149 has 2 manufacturer part numbers on file: 6FZ4C91963 (U S Dept of Transportation Federal Aviation Administration), 271-1348P4 (Raytheon Company Dba Raytheon Co).
4 possible matches (shared part number, not a government interchangeability claim): 5950-00-410-0350, 2520-00-734-9759, 5945-01-017-5421. Verify interchangeability with system specifications before substitution.
Key specifications for 6FZ4C91963: Mounting Facility Type and Quantity: 3 THREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Height: 1.870 INCHES NOMINAL IN; Main Contact Maximum Voltage Rating in Volts: 115.0 AC AND 12.0 DC; Mounting Facility Pattern: TRIANGLE SINGLE MOUNTING FACILITY. 14 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.