The Welding Powder,metallic Overlay, cataloged under National Stock Number 3439-01-391-8638, 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 Oerlikon Metco Us Inc. 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 3439-01-391-8638 |
| Primary Part Number | 204B-NS |
| Item Name | Welding Powder,metallic Overlay |
| FSC / FSG | 3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| Manufacturer | Oerlikon Metco Us Inc |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Content Within Each Unit Package | 2.5 LB LBS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 204B-NS PRIMARY | Oerlikon Metco Us Inc (USA) |
| Reference | Meaning |
|---|---|
| METCO 204B-NS | 5/9 Secondary reference Sulzer Metco Uk Ltd |
| 204B-NS | 5/9 Secondary reference Sulzer Metco (uk) Ltd |
| POWCVC | 5/1 Secondary reference Dla Aviation Engineering Div Department of Defense |
| METCO 204B-NS | 5/9 Secondary reference Sulzer Metco (uk) Ltd |
| 204B-NS | 5/9 Secondary reference Sulzer Metco Uk Ltd |
NSN 3439-01-391-8638 is a Welding Powder,metallic Overlay, manufactured by Oerlikon Metco Us Inc, classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
NSN 3439-01-391-8638 has 1 manufacturer part number on file: 204B-NS (Oerlikon Metco Us Inc).
5 possible matches (shared part number, not a government interchangeability claim): 3439-01-407-6488, 3439-01-407-6489, 3439-01-478-3948. Verify interchangeability with system specifications before substitution.
Key specifications for 204B-NS: Criticality Code Justification: FEAT; Content Within Each Unit Package: 2.5 LB LBS; Special Features: THIS NSN IS USED TO PURCHASE A MINIMUM OF 1 TO A MAXIMUM OF 39 CONTAINERS, TO PURCHASE A MINIMUM OF 40 TO A MAXIMUM OF 119 CONTAINERS USE NSN 3439-01-407-6489, TO PURCHASE A MINIMUM OF 120 OR MORE CONTAINERS USE NSN 3439-01-407-6488, CERTIFICATION: A50TF204-S3,CLB; 9507/46 ISS.1; VFA PM 819-55; WIMS652 REV.C. 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.