The Welding Machine,arc, cataloged under National Stock Number 3431-01-392-3840, is classified within Federal Supply Class 3431 (Electric Arc Welding Equipment) of the Metalworking Machinery (continued) group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3431-01-392-3840 |
| Item Name | Welding Machine,arc |
| FSC / FSG | 3431 / 34 — Electric Arc Welding Equipment |
| Status | ACTIVE |
| Rotational Speed Rating in RPM | 1800.0 |
| Current Type | DC |
| Minimum Current at Specified Voltage | 300 AMP AT 32V V |
| Arc Current Type | DC |
| Design Type | GENERATOR |
| Horsepower Rating | 30.0 |
| Output Current Rating in Amps | 34.0 NOMINAL |
| Power Output Rating | 3.0 KILOWATTS |
| Power Source | DIESEL ENGINE |
| Voltage in Volts | 32.0 |
| Output Voltage Rating in Volts | 120.0 NOMINAL AND 240.0 NOMINAL |
| Welding Process for Which Designed | GAS METAL ARC |
| Output Current Type | AC |
| Maximum Current at Specified Voltage | 350 AMP AT 34V V |
| Engine Manufacturer Identifying Number | BIG 40 DIESEL |
| Output Phase | SINGLE |
| Engine Manufacturer Name | MILLER ELECTRIC |
| Mounting Type | BASE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 902 957 | C/1 Advisory reference — outside the item-of-supply concept Miller Electric Mfg. Llc |
| BIG-40 DIESEL | 5/9 Secondary reference Miller Electric Mfg. Co. |
| BIG-40 DIESEL | C/1 Advisory reference — outside the item-of-supply concept Miller Electric Mfg. Llc |
| 902 957 | 3/9 Design control — primary reference Miller Electric Mfg. Co. |
NSN 3431-01-392-3840 is a Welding Machine,arc, classified under FSC 3431, Electric Arc Welding Equipment. Status: active.
Key specifications for 3431-01-392-3840: Rotational Speed Rating in RPM: 1800.0; Current Type: DC; Minimum Current at Specified Voltage: 300 AMP AT 32V V; Arc Current Type: DC. 18 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.