The Welding Powder,metallic Overlay, cataloged under National Stock Number 3439-01-407-6950, is classified within Federal Supply Class 3439 (Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories) of the Metalworking Machinery (continued) group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3439-01-407-6950 |
| Item Name | Welding Powder,metallic Overlay |
| FSC / FSG | 3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| Status | ACTIVE |
| Content Within Each Unit Package | 12.5 LB LBS |
| Material | ALUMINUM AND CALCIUM AND ZIRCONIUM SILICATE BASIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| METCO 201B-NS | 3/1 Design control — primary reference Oerlikon Metco Us Inc |
| 201B-NS | 5/9 Secondary reference Oerlikon Metco Us Inc |
| POWCVC | 5/1 Secondary reference Dla Aviation Engineering Div Department of Defense |
NSN 3439-01-407-6950 is a Welding Powder,metallic Overlay, classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 3439-01-478-3921, 3439-01-478-3925, 3439-01-478-3929. Verify interchangeability with system specifications before substitution.
Key specifications for 3439-01-407-6950: Content Within Each Unit Package: 12.5 LB LBS; Special Features: NSN IS USED TO PURCHASE A MINIMUM OF 24 CONTAINERS AND UP;-90+30 UM (-170 MESH +30UM);RB 96 HARDNESS;TEXTURE/FINISH AS-SPRAYED MEDIUM,GROUND VERY GOOD;COARSE GRADE OF LIME-STABLIZED ZIRCONIUM OXIDE.PRODUCES COATINGS FOR USE ONLY WHERE SPECIFICATION MUST MEET EITHER USN SPEC OS 10604 (TYPE I) OR PWA 1312 AND CPW 210.PRIMARILY USED FOR THERMAL BARRIER COATINGS.RECOMMENDED FOR COMBUSTION APPLICATIONS.ABRASIVE WEAR RESISTANT UP TO 1650 DEG (F).COATINGS RESIST WETTING AND CORROSIVE EFFECTS OF MOLTEN METAL.APPLICATIONS INCLUDE DIESEL ENGINE PISTONS,VALVES,CYLINDER HEADS AND COATINGS FOR CASTING MOLDS AND TROUGHS; Material: ALUMINUM AND CALCIUM AND ZIRCONIUM SILICATE BASIC. 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.