The Brazing Alloy,silver, cataloged under National Stock Number 3439-01-347-2643, 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 American Welding Society, Inc.. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3439-01-347-2643 |
| Primary Part Number | AWS A5.8 |
| Item Name | Brazing Alloy,silver |
| FSC / FSG | 3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| Manufacturer | American Welding Society, Inc. |
| Status | ACTIVE |
| Flux Feature | NOT INCLUDED |
| Length | 18.000 INCHES NOMINAL IN |
| Precious Material | SILVER |
| Physical Form | STRIP |
| Precious Material and Location | INTEGRAL SILVER |
| Width | 0.125 INCHES NOMINAL IN |
| Chemical Composition Percentage | SILVER 15.5; COPPER 79.15; PHOSPHOROUS 5.2; REMAINDER 0.15 |
| Thickness | 0.050 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| AWS A5.8 PRIMARY | American Welding Society, Inc. (USA) |
| Reference | Meaning |
|---|---|
| BCUP-5 | 5/2 Secondary reference U.S. Government activity |
| QQ-B-654 | 5/9 Secondary reference U.S. Government activity |
NSN 3439-01-347-2643 is a Brazing Alloy,silver, manufactured by American Welding Society, Inc., classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
NSN 3439-01-347-2643 has 1 manufacturer part number on file: AWS A5.8 (American Welding Society, Inc.).
Key specifications for AWS A5.8: Flux Feature: NOT INCLUDED; Length: 18.000 INCHES NOMINAL IN; Precious Material: SILVER; Physical Form: STRIP. 8 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.