The Relay,electromagnetic, cataloged under National Stock Number 5945-00-543-8553, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5945-00-543-8553 |
| Primary Part Number | 974-0624-000 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 THREADED STUD(S) SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 115.0 AC AND 26.5 DC |
| Mounting Facility Pattern | IN-LINE SINGLE MOUNTING FACILITY |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 0.488 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Main Contact Load Current Rating at Maximum Rated Voltage | 3.0 AMPERES AC AND 3.0 AMPERES DC RESISTIVE LOAD |
| Duty Type | CONTINUOUS |
| Winding DC Resistance Rating | 675.0 OHMS NOMINAL SINGLE WINDING |
| Nominal Thread Size | 0.112 INCHES SINGLE MOUNTING FACILITY IN |
| 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 |
| Thread Class | 2A SINGLE MOUNTING FACILITY A |
| Terminal Type and Quantity | 8 PIN ALL FUNCTIONS |
| Nonpile-Up Main Contact Arrangement | 2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY |
| 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 |
|---|---|
| 342C617H01 | Westinghouse Electric Corp (USA) |
| 335C623H01 | Westinghouse Electric Corp (USA) |
| 974-0624-000 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
| 335C623H01REVE | Westinghouse Electric Corp (USA) |
| RP7640G4 | Te Connectivity Corporation (USA) |
| Reference | Meaning |
|---|---|
| 342C617H01 | 5/2 Secondary reference U.S. Government activity |
| RP7640G4 | 5/9 Secondary reference Te Connectivity Corporation |
| 335C623H01REVE | 5/2 Secondary reference U.S. Government activity |
| SC4056 | 5/9 Secondary reference Te Connectivity Corporation |
| 2B1779 | 5/9 Secondary reference Hi-G Co Inc Sub of Nytronics Inc |
| RP7640G4 | 5/9 Secondary reference Cp Clare Corp North American Sales Operations |
| 335C623H01 | 5/2 Secondary reference U.S. Government activity |
NSN 5945-00-543-8553 is a Relay,electromagnetic, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-543-8553 has 5 manufacturer part numbers on file: 342C617H01 (Westinghouse Electric Corp), 335C623H01 (Westinghouse Electric Corp), 974-0624-000 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 335C623H01REVE (Westinghouse Electric Corp), RP7640G4 (Te Connectivity Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-185-8629. Verify interchangeability with system specifications before substitution.
Key specifications for 974-0624-000: Mounting Facility Type and Quantity: 2 THREADED STUD(S) SINGLE MOUNTING FACILITY; Overall Height: 1.085 INCHES MAXIMUM IN; Main Contact Maximum Voltage Rating in Volts: 115.0 AC AND 26.5 DC; Mounting Facility Pattern: IN-LINE SINGLE MOUNTING FACILITY. 16 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.