The Welding Powder,metallic Overlay, cataloged under National Stock Number 3439-01-479-0657, 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2 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3439-01-479-0657 |
| 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 | 5.0LBS LBS |
| Material | MOLYBDENUM BASIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| AMDRY 313X | 3/1 Design control — primary reference Oerlikon Metco Us Inc |
| POWCVC | 5/1 Secondary reference Dla Aviation Engineering Div Department of Defense |
NSN 3439-01-479-0657 is a Welding Powder,metallic Overlay, classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3439-01-479-0661, 3439-01-479-0666. Verify interchangeability with system specifications before substitution.
Key specifications for 3439-01-479-0657: Content Within Each Unit Package: 5.0LBS LBS; Special Features: NSN IS USED TO PURCHASE A MINIMUM OF 1 CONTAINER TO A MAXIMUM OF 19 CONTAINERS;MO 99.5%,SPHEROIDAL,AGGLOMERATED AND DENSIFIED;CERTIFICATION ALLISON EMS 56705,CPW 213 AMEND 1,MSRR 9507/19 AND PWA 1313;TOUGH AND HARD,WITH EXCELLENT SLIDING PROPERTIES AND GALLING RESISTANCE.GOOD EMERGENCY RUNNING PROPERTIES.FRET RESISTANT.RESISTANT TO ELECTRIC ARC EROSION.HIGH DENSITY COATINGS ARE POSSIBLE.IN OXIDIZING OR ATMOSPHERIC CONDITIONS,MO SHOULD NOT BE USED ABOVE 650DEG (F).USED FOR PUMP PARTS,DIESEL ENGINE FUEL INJECTORS,PISTON RINGS,SYNCHRONIZING RINGS,PRESS FITS,VALVES,GEARS,CAM FOLLOWERS AND SIMILAR APPLICATIONS.BONDS WELL TO STEEL; Material: MOLYBDENUM 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.