The Relay,thermal, cataloged under National Stock Number 5945-00-549-6929, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Honeywell International Inc. Dba Honeywell International. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5945-00-549-6929 |
| Primary Part Number | 737749 |
| Item Name | Relay,thermal |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Honeywell International Inc. Dba Honeywell International |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) |
| Contact Maximum Voltage Rating in Volts | 115.0 AC AND 115.0 DC |
| Delay Time in Seconds | 13.5 FIXED OPERATE MINIMUM AND 16.5 FIXED OPERATE MAXIMUM |
| Contact Arrangement | SINGLE POLE, SINGLE THROW, NORMALLY OPEN |
| Heater Power Rating in Watts | 4.0 |
| Heater Voltage Rating in Volts | 27.5 |
| Contact Maximum Current Rating in Amps | 6.0 AC OR 1.0 DC |
| Environmental Protection | HERMETIC |
| 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 |
|---|---|
| 737749 PRIMARY | Honeywell International Inc. Dba Honeywell International (USA) |
| Reference | Meaning |
|---|---|
| RF20N028 | 5/1 Secondary reference U.S. Government activity |
| 737749 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
| GT-5442 | 5/2 Secondary reference U.S. Government activity |
NSN 5945-00-549-6929 is a Relay,thermal, manufactured by Honeywell International Inc. Dba Honeywell International, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-549-6929 has 1 manufacturer part number on file: 737749 (Honeywell International Inc. Dba Honeywell International).
2 possible matches (shared part number, not a government interchangeability claim): 5945-00-823-2524, 5962-01-182-6020. Verify interchangeability with system specifications before substitution.
Key specifications for 737749: Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S); Overall Height: 2.125 INCHES NOMINAL IN; Contact Maximum Voltage Rating in Volts: 115.0 AC AND 115.0 DC; Delay Time in Seconds: 13.5 FIXED OPERATE MINIMUM AND 16.5 FIXED OPERATE MAXIMUM. 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.