The Welding Machine,arc, cataloged under National Stock Number 3431-01-644-8402, is classified within Federal Supply Class 3431 (Electric Arc Welding Equipment) of the Metalworking Machinery (continued) group. The manufacturer of record is Sunstone Engineering Llc. Government technical data includes 1 specification, 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 | 3431-01-644-8402 |
| Primary Part Number | 150I |
| Item Name | Welding Machine,arc |
| FSC / FSG | 3431 / 34 — Electric Arc Welding Equipment |
| Manufacturer | Sunstone Engineering Llc |
| Status | ACTIVE |
| Design Type | TRANSFORMER |
| 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 |
|---|---|
| 150I PRIMARY | Sunstone Engineering Llc (USA) |
NSN 3431-01-644-8402 is a Welding Machine,arc, manufactured by Sunstone Engineering Llc, classified under FSC 3431, Electric Arc Welding Equipment. Status: active.
NSN 3431-01-644-8402 has 1 manufacturer part number on file: 150I (Sunstone Engineering Llc).
Key specifications for 150I: Design Type: TRANSFORMER; Part Name Assigned by Controlling Agency: PULSE ARC AND RESISTANCE WELDER. 1 specification is 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.