The Welding Powder,metallic Overlay, cataloged under National Stock Number 3439-01-391-8639, 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 1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3439-01-391-8639 |
| Item Name | Welding Powder,metallic Overlay |
| FSC / FSG | 3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| Status | ACTIVE |
| Material | 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 |
|---|---|
| POWCVC | 5/1 Secondary reference Dla Aviation Engineering Div Department of Defense |
| 204-NS/12.5 LB | 5/9 Secondary reference Oerlikon Metco Us Inc |
| METCO 204NS | 3/1 Design control — primary reference Oerlikon Metco Us Inc |
NSN 3439-01-391-8639 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): 3439-01-407-6542, 3439-01-407-6566, 3439-01-478-3966. Verify interchangeability with system specifications before substitution.
Key specifications for 3439-01-391-8639: Special Features: NSN IS USED TO PURCHASE A MINIMUM OF 1 CONTAINER TO A MAXIMUM OF 7 CONTAINERS;ZR O 8Y O;-125+11 UM (-120 MESH +11 UM);RC 30 +/-5 HARDNESS;TEXTURE/FINISH AS-SPRAYED 450-600,GROUND 10-15;COATING NUMBER P204-10;CERTIFICATION ALLIED SIGNAL EMS 57750 TYPE I,CLASS 1,GE A50TF278 CLASS B,10042376,KELLY AFB 97P1271,LYCOMING M3978/M3966 TYPE II AND PWA 1375;SPHERICAL,FREE FLOWING,PARTIALLY STABILIZED 7-8% YTTRIA ZIRCONIA POWDER.PRODUCES EXCELLENT HIGH TEMPREATURE THERMAL BARRIER COATINGS RESISTANT TO THERMAL CYCLING STRESSES AND STRAINS; Material: ZIRCONIUM SILICATE BASIC. 1 specification is 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.