The Welding Powder,metallic Overlay, cataloged under National Stock Number 3439-01-407-6542, 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1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3439-01-407-6542 |
| 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 | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| METCO 204NS | 3/1 Design control — primary reference Oerlikon Metco Us Inc |
| POWCVC | 5/1 Secondary reference Dla Aviation Engineering Div Department of Defense |
| 204-NS | 5/9 Secondary reference Oerlikon Metco Us Inc |
NSN 3439-01-407-6542 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): 3439-01-407-6566, 3439-01-407-6955, 3439-01-478-3966. Verify interchangeability with system specifications before substitution.
Key specifications for 3439-01-407-6542: Special Features: NSN IS USED TO PURCHASE A MINIMUM OF 8 CONTAINRS TO A MAXIMUM OF 23CONTAINERS;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.
Possible hazard — SDS may be required (DLA HMIC P). 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.