The Solder,lead-Tin Alloy, cataloged under National Stock Number 3439-01-372-3389, 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 4 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3439-01-372-3389 |
| Item Name | Solder,lead-Tin Alloy |
| FSC / FSG | 3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| Status | ACTIVE |
| Wire Core Type | ROSIN |
| Diameter | 0.020 INCHES NOMINAL IN |
| Physical Form | WIRE |
| Chemical Composition Percentage | TIN 60; LEAD 40 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| SN60WRMAP3 | 3/2 Design control — primary reference U.S. Government activity |
| QQ-S-571 | 5/9 Secondary reference U.S. Government activity |
| QQ-S-571SN60WRMAP3SZ0.020 | 5/9 Secondary reference U.S. Government activity |
| ASTM B32 | 3/1 Design control — primary reference U.S. Government activity |
NSN 3439-01-372-3389 is a Solder,lead-Tin Alloy, 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): 3439-01-393-8959, 3439-01-423-0592, 3439-01-505-2772. Verify interchangeability with system specifications before substitution.
Key specifications for 3439-01-372-3389: Wire Core Type: ROSIN; Diameter: 0.020 INCHES NOMINAL IN; Physical Form: WIRE; Special Features: 1 POUND SPOOL LBS. 4 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.