The Relay,electromagnetic, cataloged under National Stock Number 5945-01-683-3940, 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 Corp Div Leach International Corporation. Government technical data includes 7 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-01-683-3940 |
| Primary Part Number | YA-D4K |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Leach International Corp Div Leach International Corporation |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 TERMINAL SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 28.0 DC |
| Precious Material | GOLD |
| Main Contact Load Current Rating at Maximum Rated Voltage | 3.0 AMPERES DC INDUCTIVE LOAD |
| Coil Quantity | 1 |
| Terminal Type and Quantity | 20 WIRE HOOK CONTACTS |
| Nonpile-Up Main Contact Arrangement | 4 POLE, DOUBLE THROW, BOTH POSITIONS MAINTAINED |
| 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 |
|---|---|
| YA-D4K PRIMARY | Leach International Corp Div Leach International Corporation (USA) |
NSN 5945-01-683-3940 is a Relay,electromagnetic, manufactured by Leach International Corp Div Leach International Corporation, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-683-3940 has 1 manufacturer part number on file: YA-D4K (Leach International Corp Div Leach International Corporation).
Key specifications for YA-D4K: Mounting Facility Type and Quantity: 1 TERMINAL SINGLE MOUNTING FACILITY; Overall Height: 0.81 INCHES NOMINAL IN; Main Contact Maximum Voltage Rating in Volts: 28.0 DC; Precious Material: GOLD. 7 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.