The Relay,electromagnetic, cataloged under National Stock Number 5945-01-122-4199, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is G General Electro-Components Inc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-01-122-4199 |
| Primary Part Number | MK503A120 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | G General Electro-Components Inc |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 THREADED STUD(S) SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 120.0 AC |
| Precious Material | SILVER |
| Main Contact Load Current Rating at Maximum Rated Voltage | 20.0 AMPERES AC RESISTIVE LOAD |
| Duty Type | CONTINUOUS |
| Thread Direction | RIGHT-HAND SINGLE MOUNTING FACILITY |
| Nominal Thread Size | 0.138 INCHES SINGLE MOUNTING FACILITY IN |
| Coil Quantity | 1 |
| Precious Material and Location | CONTACTS SILVER |
| Winding Quantity | 1 |
| Operating Voltage Rating and Type at Specified Temp | 120.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING |
| Thread Class | 2A SINGLE MOUNTING FACILITY A |
| Thread Quantity Per Inch | 32 SINGLE MOUNTING FACILITY |
| Material | SILVER CONTACT |
| Terminal Type and Quantity | 11 QUICK DISCONNECT, MALE ALL FUNCTIONS |
| Nonpile-Up Main Contact Arrangement | 3 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 |
|---|---|
| MK503A120 | G General Electro-Components Inc (USA) |
| Reference | Meaning |
|---|---|
| KR14AG120V | 3/9 Design control — primary reference Te Connectivity Corporation |
| KR14A115VAC | C/1 Advisory reference — outside the item-of-supply concept Te Connectivity Corporation |
NSN 5945-01-122-4199 is a Relay,electromagnetic, manufactured by G General Electro-Components Inc, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-122-4199 has 1 manufacturer part number on file: MK503A120 (G General Electro-Components Inc).
Key specifications for MK503A120: Mounting Facility Type and Quantity: 1 THREADED STUD(S) SINGLE MOUNTING FACILITY; Overall Height: 1.520 INCHES NOMINAL IN; Main Contact Maximum Voltage Rating in Volts: 120.0 AC; Precious Material: SILVER. 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.