The Rod,welding, cataloged under National Stock Number 3439-00-252-8352, 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 Aufhauser Corp. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3439-00-252-8352 |
| Primary Part Number | 680 RCUZN-B |
| Item Name | Rod,welding |
| FSC / FSG | 3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| Manufacturer | Aufhauser Corp |
| Status | ACTIVE |
| Length | 36.000 INCHES NOMINAL IN |
| Filler Metal Chemical Composition in Percent | 0.15 SILICON NOMINAL SIXTH ELEMENT |
| Filler Metal Chemical Composition in Percent | 0.50 MAGNESIUM NOMINAL FIFTH ELEMENT |
| Filler Metal Chemical Composition in Percent | 0.80 NICKEL NOMINAL FOURTH ELEMENT |
| Filler Metal Chemical Composition in Percent | 1.20 IRON NOMINAL THIRD ELEMENT |
| Filler Metal Chemical Composition in Percent | 60.00 COPPER NOMINAL SECOND ELEMENT |
| Filler Metal Chemical Composition in Percent | 64.00 ZINC NOMINAL FIRST ELEMENT |
| Weld Position for Which Designed | ALL POSITIONS |
| Material Document and Classification | AWSSA5.27-78 CL RCUZN-B ASSN STD SINGLE MATERIAL RESPONSE FILLER |
| Shape | ROUND |
| Outside Diameter | 0.093 INCHES NOMINAL IN |
| Process Type for Which Designed | OXYACETYLENE |
| Physical Form | STRAIGHT |
| Material | COPPER ALLOY FILLER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 680 RCUZN-B PRIMARY | Aufhauser Corp (USA) |
| Reference | Meaning |
|---|---|
| MIL-R-19631 | 5/9 Secondary reference U.S. Government activity |
| AWSA5.27-78 RCUZN-B 0093 | 5/9 Secondary reference American Welding Society, Inc. |
NSN 3439-00-252-8352 is a Rod,welding, manufactured by Aufhauser Corp, classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
NSN 3439-00-252-8352 has 1 manufacturer part number on file: 680 RCUZN-B (Aufhauser Corp).
2 possible matches (shared part number, not a government interchangeability claim): 3439-00-255-7757, 3439-01-017-2793. Verify interchangeability with system specifications before substitution.
Key specifications for 680 RCUZN-B: Length: 36.000 INCHES NOMINAL IN; Filler Metal Chemical Composition in Percent: 0.15 SILICON NOMINAL SIXTH ELEMENT; Filler Metal Chemical Composition in Percent: 0.50 MAGNESIUM NOMINAL FIFTH ELEMENT; Filler Metal Chemical Composition in Percent: 0.80 NICKEL NOMINAL FOURTH ELEMENT. 14 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.