The Relay,electromagnetic, cataloged under National Stock Number 5945-01-071-5231, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Astronics Test Systems 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5945-01-071-5231 |
| Primary Part Number | 310128 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Astronics Test Systems Inc |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 THREADED STUD(S) SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 1000.0 DC |
| Precious Material | GOLD AND SILVER |
| Duty Type | CONTINUOUS |
| Winding DC Resistance Rating | 200.0 OHMS NOMINAL SINGLE WINDING |
| Nominal Thread Size | 0.099 INCHES SINGLE MOUNTING FACILITY IN |
| Time Delay | 0.020 SECONDS MAXIMUM FIXED OPERATE TIME |
| Coil Quantity | 1 |
| Precious Material and Location | CONTACTS GOLD AND CONTACTS SILVER |
| Winding Quantity | 1 |
| Operating Voltage Rating and Type at Specified Temp | 5.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING |
| Thread Class | 2A SINGLE MOUNTING FACILITY A |
| Thread Quantity Per Inch | 48 SINGLE MOUNTING FACILITY |
| Material | GOLD AND SILVER CONTACT |
| Terminal Type and Quantity | 8 TAB, SOLDER LUG 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 |
|---|---|
| 310128 PRIMARY | Astronics Test Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| AZ-420 | C/1 Advisory reference — outside the item-of-supply concept American Zettler Inc |
NSN 5945-01-071-5231 is a Relay,electromagnetic, manufactured by Astronics Test Systems Inc, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-071-5231 has 1 manufacturer part number on file: 310128 (Astronics Test Systems Inc).
1 possible match (shared part number, not a government interchangeability claim): 2530-01-247-8456. Verify interchangeability with system specifications before substitution.
Key specifications for 310128: Mounting Facility Type and Quantity: 1 THREADED STUD(S) SINGLE MOUNTING FACILITY; Overall Height: 1.570 INCHES NOMINAL IN; Main Contact Maximum Voltage Rating in Volts: 1000.0 DC; Precious Material: GOLD AND 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.