The Relay,electromagnetic, cataloged under National Stock Number 5945-00-404-8635, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Leach International Germany Gmbh. Government technical data includes 17 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5945-00-404-8635 |
| Primary Part Number | HFW1301K01 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Leach International Germany Gmbh |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 115.0 AC AND 28.0 DC |
| Fragility Factor | MODERATELY RUGGED |
| Main Contact Load Current Rating at Maximum Rated Voltage | 300.0 MILLIAMPERES AC AND 2.0 AMPERES DC RESISTIVE LOAD |
| Duty Type | CONTINUOUS |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Winding DC Resistance Rating | 600.0 OHMS MINIMUM AND 900.0 OHMS MAXIMUM SINGLE WINDING |
| Specification/standard Data | 81349-MIL-R-5757/9 GOVERNMENT SPECIFICATION |
| Time Delay | 0.004 SECONDS MAXIMUM FIXED OPERATE AND RELEASE TIME |
| Coil Quantity | 1 |
| Environmental Protection | HERMETIC |
| Winding Quantity | 1 |
| Operating Voltage Rating and Type at Specified Temp | 26.5 VOLTS DC 25 DEG CELSIUS SINGLE WINDING |
| Test Data Document | 81349-MIL-R-5757 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Terminal Type and Quantity | 8 PIN ALL FUNCTIONS |
| Nonpile-Up Main Contact Arrangement | 2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY |
| Purpose for Which Designed | GENERAL |
| 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 |
|---|---|
| HFW1301K01 | Leach International Germany Gmbh (DEU) |
| Reference | Meaning |
|---|---|
| 93230301-10 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| WSA2-6-26-5 | C/1 Advisory reference — outside the item-of-supply concept Allied Controls, Inc. |
| 2K2299-19 | C/1 Advisory reference — outside the item-of-supply concept Hi-G Co Inc Sub of Nytronics Inc |
| MIL-R-5757/9 | 4/1 Identification reference U.S. Government activity |
| M5757/9-019 | 2/2 Government specification standardization U.S. Government activity |
| HFW1301K01 | C/1 Advisory reference — outside the item-of-supply concept Te Connectivity Corporation |
| HFW1301K01 | C/1 Advisory reference — outside the item-of-supply concept Cp Clare Corp North American Sales Operations |
NSN 5945-00-404-8635 is a Relay,electromagnetic, manufactured by Leach International Germany Gmbh, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-404-8635 has 1 manufacturer part number on file: HFW1301K01 (Leach International Germany Gmbh).
1 possible match (shared part number, not a government interchangeability claim): 5945-01-213-7879. Verify interchangeability with system specifications before substitution.
Key specifications for HFW1301K01: Mounting Facility Type and Quantity: 1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY; Overall Height: 0.410 INCHES MAXIMUM IN; Main Contact Maximum Voltage Rating in Volts: 115.0 AC AND 28.0 DC; Fragility Factor: MODERATELY RUGGED. 17 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.