The Welding Powder,metallic Overlay, cataloged under National Stock Number 3439-01-425-9643, is classified within Federal Supply Class 3439 (Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories) of the Metalworking Machinery (continued) group. The manufacturer of record is Praxair Surface Technologies, Inc. Dba Praxair. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3439-01-425-9643 |
| Primary Part Number | CO-139 |
| Item Name | Welding Powder,metallic Overlay |
| FSC / FSG | 3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| Manufacturer | Praxair Surface Technologies, Inc. Dba Praxair |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Content Within Each Unit Package | 8LB LBS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| CO-139 PRIMARY | Praxair Surface Technologies, Inc. Dba Praxair (USA) |
| Reference | Meaning |
|---|---|
| POWCVC | 5/1 Secondary reference Dla Aviation Engineering Div Department of Defense |
NSN 3439-01-425-9643 is a Welding Powder,metallic Overlay, manufactured by Praxair Surface Technologies, Inc. Dba Praxair, classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
NSN 3439-01-425-9643 has 1 manufacturer part number on file: CO-139 (Praxair Surface Technologies, Inc. Dba Praxair).
Key specifications for CO-139: Criticality Code Justification: FEAT; Content Within Each Unit Package: 8LB LBS; Special Features: UNIT PACKAGE TYPE IS CONTAINER;MATERIAL COMPOSITION-COBALT,CHROMINUM,ALUMINUM, AND YTTRIUM;CERTIFICATION: ROLLS ROYCE MSRR 953712. 2 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). 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.