The Rod,welding, cataloged under National Stock Number 3439-00-255-8944, 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 11 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 3439-00-255-8944 |
| Item Name | Rod,welding |
| FSC / FSG | 3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| Status | CANCELLED |
| Length | 36.000 INCHES NOMINAL IN |
| Filler Metal Chemical Composition in Percent | 0.15 SILICON NOMINAL THIRD ELEMENT |
| Filler Metal Chemical Composition in Percent | 37.00 ZINC NOMINAL SECOND ELEMENT |
| Filler Metal Chemical Composition in Percent | 61.00 COPPER NOMINAL FIRST ELEMENT |
| Weld Position for Which Designed | ALL POSITIONS |
| Material Document and Classification | QQ-R-571,CL RCUSN-A FED SPEC SINGLE MATERIAL RESPONSE FILLER |
| Shape | ROUND |
| Outside Diameter | 0.187 INCHES NOMINAL IN |
| Process Type for Which Designed | CARBON ARC OR GAS TUNGSTEN ARC |
| Physical Form | STRAIGHT |
| Material | COPPER ALLOY FILLER |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| AWS A5.7 | 5/1 Secondary reference American Welding Society, Inc. |
| RCUSN-A 0.187 | 2/2 Government specification standardization U.S. Government activity |
| A5.7 ERCUSN-A | 5/1 Secondary reference American Welding Society, Inc. |
| QQ-R-571 | 5/9 Secondary reference U.S. Government activity |
| AIRC056A | 5/1 Secondary reference Messer Llc |
| AIRC056A | 5/1 Secondary reference U.S. Government activity |
NSN 3439-00-255-8944 is a Rod,welding, classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: cancelled.
Key specifications for 3439-00-255-8944: Length: 36.000 INCHES NOMINAL IN; Filler Metal Chemical Composition in Percent: 0.15 SILICON NOMINAL THIRD ELEMENT; Filler Metal Chemical Composition in Percent: 37.00 ZINC NOMINAL SECOND ELEMENT; Filler Metal Chemical Composition in Percent: 61.00 COPPER NOMINAL FIRST ELEMENT. 11 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.
NSN 3439-00-255-8944 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.