The Welding Machine,inverter Type, cataloged under National Stock Number 3431-01-397-8310, is classified within Federal Supply Class 3431 (Electric Arc Welding Equipment) of the Metalworking Machinery (continued) group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3431-01-397-8310 |
| Item Name | Welding Machine,inverter Type |
| FSC / FSG | 3431 / 34 — Electric Arc Welding Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | RATED DUTY CYCLE 35; 90 AMPS AT 24 VDC; 115VAC; S INGLE PHASE; 50/60 HERTZ; HEIGHT 10 1/4 IN.; WIDTH 5 3/4 IN.; LENGTH 19 IN.; WEIGHT 24 POUNDS; SUPPLIED WITH A 10 FOOT PRIMARY CABLE; 10 FOOT WORK CABLES WITH MALE QUICK CONNECTORS; WORK CLAMP; ELECTRODE HOLDER VDC |
| 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 |
|---|---|
| WELDCVC | 5/1 Secondary reference Dla Aviation Engineering Div Department of Defense |
| 1353-255 | 3/9 Design control — primary reference U.S. Government activity |
| STW 90I | 5/9 Secondary reference L-Tec Welding and Cutting Systems |
| 1353-255 | 5/9 Secondary reference L-Tec Welding and Cutting Systems |
| MINI ARC 90I | 5/9 Secondary reference L-Tec Welding and Cutting Systems |
| 34788 | 5/9 Secondary reference L-Tec Welding and Cutting Systems |
NSN 3431-01-397-8310 is a Welding Machine,inverter Type, classified under FSC 3431, Electric Arc Welding Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4250-01-555-7587, 6150-01-560-3794. Verify interchangeability with system specifications before substitution.
Key specifications for 3431-01-397-8310: General Characteristics Item Description: RATED DUTY CYCLE 35; 90 AMPS AT 24 VDC; 115VAC; S INGLE PHASE; 50/60 HERTZ; HEIGHT 10 1/4 IN.; WIDTH 5 3/4 IN.; LENGTH 19 IN.; WEIGHT 24 POUNDS; SUPPLIED WITH A 10 FOOT PRIMARY CABLE; 10 FOOT WORK CABLES WITH MALE QUICK CONNECTORS; WORK CLAMP; ELECTRODE HOLDER VDC; Special Features: PORTABLE, DC CONSTANT CURRENT, HIGH PERFORMANCE; TIG WELDING(GTAW) AND STICK WELDING(SMAW); SINGLE RANGE DIAL ON FRONT PANEL; HIGH IMPACT, MOLDED PLASTIC CASE; BUILT-IN SHOULDER STRAP; CABLE STORAGE BUILT INTO THE BASE; REMOVABLE DUST FILTER; DOUBLE INSULATED CONSTRUCTION; FAN COOLED; USE WITH ELECTRODES UP TO 3/32 IN. IN. 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.