The Relay,electromagnetic, cataloged under National Stock Number 5945-01-499-5631, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Power Control Devices, Inc.. Government technical data includes 16 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5945-01-499-5631 |
| Primary Part Number | 240-748A |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Power Control Devices, Inc. |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 4 THREADED STUD(S) SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 28.0 DC |
| Mounting Facility Pattern | RECTANGULAR SINGLE MOUNTING FACILITY |
| Main Contact Load Current Rating at Maximum Rated Voltage | 1.0 AMPERES DC RESISTIVE LOAD |
| Duty Type | CONTINUOUS |
| Center to Center Distance Between Mounting Facilities Parallel to Height | 0.700 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Nominal Thread Size | 0.112 INCHES SINGLE MOUNTING FACILITY IN |
| Time Delay | 165.00 SECONDS MINIMUM AND 180.00 SECONDS MAXIMUM FIXED OPERATE TIME |
| Coil Quantity | 1 |
| Environmental Protection | HERMETIC |
| Winding Quantity | 1 |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 0.700 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Thread Class | 2A SINGLE MOUNTING FACILITY A |
| Terminal Type and Quantity | 8 WIRE HOOK 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 Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 240-748A PRIMARY | Power Control Devices, Inc. (USA) |
| 2258-2 PRIMARY | Magnetika Inc (USA) |
| Reference | Meaning |
|---|---|
| 34016-2B | 3/9 Design control — primary reference Tempo Instrument Inc Defense Electronics Div |
| 240-748A | 5/9 Secondary reference Power Control Devices Inc |
| 208801 | 5/9 Secondary reference Wems Inc Div Wems Electronics |
| 950126-2B | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5945-01-499-5631 is a Relay,electromagnetic, manufactured by Power Control Devices, Inc., classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-499-5631 has 2 manufacturer part numbers on file: 240-748A (Power Control Devices, Inc.), 2258-2 (Magnetika Inc).
1 possible match (shared part number, not a government interchangeability claim): 8340-01-594-9853. Verify interchangeability with system specifications before substitution.
Key specifications for 240-748A: Mounting Facility Type and Quantity: 4 THREADED STUD(S) SINGLE MOUNTING FACILITY; Overall Height: 1.030 INCHES MAXIMUM IN; Main Contact Maximum Voltage Rating in Volts: 28.0 DC; Mounting Facility Pattern: RECTANGULAR 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.
NSN 5945-01-499-5631 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.